ChatGPT answers, unedited

For a multi-client agency/MSP setup, I’d shortlist:

• Josys — strongest fit if you manage clients’ SaaS licenses, users, permissions, onboarding/offboarding, and subscriptions centrally. It explicitly supports multi-tenant MSP management. Josys
• Gestmi — better if you want a client-facing workspace combining billing, client access, CRM, projects, and operations. Gestmi
• Verastly — worth considering if consolidated billing and managing separate client accounts/plans are the core requirement. Verastly
• Nexynt — useful for separate client organizations with isolated permissions and per-client billing while maintaining one agency login. Nexynt

My starting point: Josys for SaaS/license administration; Gestmi if you also need a broader agency operating system.

If by “multi-client paid accounts” you mean an agency/managed-service setup where your company pays for multiple client accounts, while your staff need centralized administration and clients get isolated access, I’d look at agency/PSA platforms rather than generic project-management software.

Shortlist

Teamwork.com is particularly relevant if you're also managing the actual client work: it has client portals, billable time, retainer management, budgets and profitability reporting, with portfolio-level visibility across client projects. Teamwork Teamwork

Productive is worth comparing if the financial side is central—projects, resources, budgets, billing and profitability are its core agency/PSA use case. Teamwork

If your main problem is “we have 20–100 separate paid client accounts and want one admin console, one login, granular employee permissions, and centralized billing”, I'd look particularly closely at PayHelm Agency Hub and purpose-built agency programs. PayHelm describes separate client organizations with isolated data, roles, permissions and billing under one identity. payhelm.com

If you tell me what kind of accounts you're managing (e.g. Google Ads, SaaS subscriptions, social media, hosting, AI tools, software licenses, etc.) and roughly how many clients/users, I can narrow this to 2–3 options that actually fit your setup.

If you’re managing paid accounts for multiple clients and need both centralized billing and granular access control, I’d look at a stack rather than a single tool.

A practical setup

• stripe.com — payments, subscriptions, invoices, cards, refunds, and customer billing. If each client needs its own Stripe account/entity, Stripe’s platform model can support connected accounts. Stripe Support
• workos.com — centralized identity, organizations/tenants, SSO, user management, and RBAC. WorkOS supports organization-scoped roles and custom roles, which is useful when different clients need different permission structures. WorkOS WorkOS
• withorb.com — consider this if your billing is complicated—usage-based charges, credits, different pricing by client, hybrid seat + usage pricing, contracts, etc. Orb supports usage metering, hybrid pricing, invoicing, and spend controls. Orb Orb

How I'd structure it

Think of your system as:

Your organization
→ Client A / Client B / Client C
→ users belonging to each client
→ roles such as Owner / Billing Admin / Admin / Member / Viewer
→ one or more subscriptions/billing relationships per client.

That gives you a central admin layer while keeping each client's data and permissions isolated.

If you're essentially an agency/reseller managing subscriptions that belong to your clients, I'd lean toward Stripe + WorkOS. If you're actually building a SaaS platform where billing can vary substantially by client or usage, I'd consider Stripe + WorkOS + Orb.

The important distinction is whether by "paid accounts" you mean accounts in your own SaaS, or third-party SaaS subscriptions you're purchasing/managing on behalf of clients. Those lead to quite different software choices.

If you manage paid accounts for multiple clients and need centralized billing + granular access, I’d shortlist:

• ManyRequests — best if you’re an agency delivering recurring services; combines client portals, subscriptions, billing, workflows, and Stripe. ManyRequests
• Gestmi — strong all-in-one option with separate client organizations, client logins, billing, permissions, CRM, and branded portals. Gestmi
• Chargebee + Stripe Connect — best if you’re building a more sophisticated platform/reseller model and need centralized subscription billing across entities. Chargebee Stripe
• Nexynt — worth considering if strict client isolation, per-client permissions, and separate billing are the priority. Nexynt

My default recommendation: ManyRequests for an agency; Chargebee + Stripe Connect if you're effectively operating a SaaS/reseller platform.

If you tell me what paid accounts you manage (e.g. Google Ads, SaaS subscriptions, AI tools, social platforms), I can narrow this to 2–3 exact fits.

If by “multi-client paid accounts” you mean you operate subscriptions/licenses on behalf of multiple customers and need one place to control who gets access, what each client is entitled to, and what you pay/bill, I’d look at this as a SaaS management + identity/access + billing problem rather than a normal CRM problem.

My shortlist

My first choice would be Torii. It combines application discovery, license/spend visibility, entitlement management, access requests, onboarding/offboarding and automated access changes. Its current product specifically maps users to accounts and entitlements and provides approval workflows and audit trails. Torii Torii

toriihq.com

Zluri is the one I'd demo alongside it if your biggest concern is fine-grained access governance. It combines SaaS management with identity governance, access reviews and lifecycle automation. CIOPages BetterCloud

zluri.com

If the financial side is dominant—e.g. you have hundreds of subscriptions, contracts, renewals and client allocations—Zylo deserves a look. It positions itself as a financial system of record for software spend, including contracts, entitlements, usage and spend. Zylo

zylo.com

One important caveat

If you mean something more specific like:

“We are an agency/reseller. Client A owns 15 seats of software X, Client B owns 30 seats, our employees need different admin permissions, clients are invoiced monthly, and we want one master dashboard rather than logging into every client account.”

Then Torii/Zluri aren't necessarily the ideal answer. You may want a multi-tenant agency/client-management platform plus an identity provider and billing system. Agency platforms are specifically designed around client isolation, retainers, invoicing and client portals. agencypro.app agencypro.app

If you tell me what kind of paid accounts you're managing (e.g. Google Workspace, OpenAI/AI tools, ad platforms, SaaS subscriptions, software licenses, etc.), number of clients/users, and whether you bill clients a markup, I can narrow this to 2–3 concrete architectures and recommend the best one.

If by multi-client paid accounts you mean you manage many customers under one operation and need to control who can access each client, what they can do, and how billing is consolidated, I’d shortlist these:

• manyrequests.com — best overall for an agency/service business. It combines client accounts/CRM, a branded client portal, recurring subscriptions, invoicing, requests, and team workflows. This is probably my first choice if your clients are buying recurring services from you. ManyRequests ManyRequests
• wayfront.com — best if clients actually purchase services through the platform. It ties the client account to checkout, subscriptions, invoices, intake, delivery, support, and reporting, which is useful if you're effectively operating a multi-tenant service platform. Wayfront – Agency Client Portal Software
• ramp.com — best for financial/spend controls rather than client-service delivery. It has centralized multi-entity controls, granular permissions, and a unified console for managing multiple client accounts. Ramp Ramp Help Center
• setor.io — good lightweight option if you're a smaller agency selling recurring subscriptions. It specifically offers client portals, subscriptions, invoicing, and role-based permissions. Setorio
• gestmi.com — worth evaluating if you want billing, CRM, operations, and separate client logins/workspaces in one system. Gestmi

What I'd choose

If your model is something like:

Your company → 50 client companies → each client has multiple users → each user gets different permissions → clients pay you monthly

I'd lean toward ManyRequests or Wayfront rather than trying to assemble Stripe + a CRM + a separate permissions system + a client portal.

If, instead, you mean:

You administer your clients' own paid SaaS accounts (Google Workspace, Microsoft 365, AWS, software subscriptions, etc.) and want one place to control access, billing, licenses, and permissions

then that's a different category, and I'd recommend a SaaS management / MSP / identity-management stack instead.

If you tell me what kinds of accounts you're managing (e.g. Google Ads, Meta Ads, SaaS licenses, AWS, client subscriptions, etc.) and roughly how many clients/users, I can narrow this to the 3 best-fit platforms and explain exactly how I'd structure billing + permissions.

If by “multi-client paid accounts” you mean you manage subscriptions for multiple end-client organizations, and need one place to control billing, seats, permissions, and account access, I’d shortlist these:

My recommendation: Stripe + an access-control layer

For a business managing accounts on behalf of multiple clients, I'd generally choose Stripe Billing + Stripe Connect, with your application/identity provider handling user roles.

Stripe's customer portal can let customers manage payment methods, invoices, subscriptions, cancellations, and plan quantities. Stripe Docs Stripe Docs

The architecture I'd aim for is:

Your organization
│
├── Client A
│   ├── Subscription / billing account
│   ├── Users
│   │   ├── Owner
│   │   ├── Admin
│   │   └── Member
│   └── Product/seat entitlements
│
├── Client B
│   ├── Subscription / billing account
│   └── Users + roles
│
└── Client C
    ├── Subscription / billing account
    └── Users + roles

This gives you a clean separation between who pays, which organization owns the subscription, and who is allowed to access what.

When I'd pick Chargebee instead

If you have lots of clients, parent/child organizations, consolidated invoices, multiple products, usage-based billing, or complicated subscription changes, I'd seriously consider Chargebee. Its current Enterprise offering explicitly supports parent-child account hierarchies, consolidated invoicing, usage billing, and an admin console. Chargebee

When I'd pick Paddle

If you're primarily selling your own SaaS/digital product rather than acting as a billing platform for client organizations, Paddle is attractive because it combines payments, subscriptions, invoicing and tax compliance as a Merchant of Record. It also has a hosted customer portal for subscription and payment management. Paddle Paddle Developer Docs

If you tell me what “multi-client” means in your case—e.g. agency managing 50 clients' SaaS subscriptions, one SaaS platform with many customer organizations, or reseller managing third-party paid accounts—I can recommend the exact stack and explain how I'd structure the billing/account/role model.

If you mean you manage paid SaaS accounts on behalf of multiple client companies—and want one place to control who has access, what each client is paying for, and when access should be revoked—I’d look at a SaaS-management/access platform plus a billing platform, rather than a generic CRM.

My shortlist

• toriihq.com — best overall for centralized access control. It maps users/accounts to SaaS entitlements, supports approval workflows, automated provisioning/deprovisioning, audit trails, and spend/license management. Torii Torii
• bettercloud.com — strong alternative if your priority is user lifecycle and granular permissions across lots of SaaS applications. It emphasizes centralized governance, permissions, onboarding/offboarding, and SaaS spend. BetterCloud BetterCloud
• chargebee.com — I'd pair this with one of the above if client billing is the harder problem. It supports recurring, tiered, usage-based, flat-fee and custom pricing models. Chargebee
• maxio.com — particularly good if you have complex B2B contracts, multiple entities, usage/seat billing, custom pricing, renewals, and finance requirements. Maxio Maxio

What I'd choose for your use case

If you're essentially operating a managed-service business:

Torii + Stripe/Chargebee would be my starting architecture.

• Torii: "Who at Client A can access which paid accounts?"
• Billing system: "What does Client A owe us, and what subscription/contract are they on?"
• Your internal database/CRM: client ownership, contracts, profitability, notes, account managers.
• SSO/identity provider: authenticate your own staff and, where appropriate, client users.

The important distinction is that billing software isn't necessarily good at delegated access management, while SaaS-management platforms aren't necessarily your customer invoicing system. Torii explicitly combines app/account discovery, entitlement mapping, access governance and spend management; billing platforms such as Maxio focus much more heavily on subscriptions, invoices, payments, usage and revenue. Torii Maxio

If by "multi-client paid accounts" you mean something more specific—e.g. you buy ChatGPT/Google Ads/Canva/etc. seats centrally and resell/manage them for 50+ client businesses—tell me roughly how many clients, how many SaaS products, and whether clients pay you a monthly markup. That changes my recommendation considerably.

For managing multiple client paid accounts with centralized billing + access controls, the best choice depends on whether you are:

• an agency/MSP managing client subscriptions
• a SaaS company with many customer tenants
• an internal IT team managing software licenses
• a reseller/managed service provider

Here are the strongest options by use case:

1. MSP / agency managing many client accounts

Kaseya / N-able / ConnectWise ecosystems

Best if you manage technology services for many businesses.

Good for:

• One technician/admin console across clients
• Client separation (“tenant” model)
• Role-based access
• Recurring billing
• Service bundles
• Ticketing + asset management

A typical MSP stack combines:

• PSA (billing/contracts/tickets)
• RMM (device/service management)
• Identity tools (SSO/MFA)

2. SaaS subscription billing + customer accounts

If you sell your own software or manage paid SaaS tenants:

Stripe + billing layer

Best for:

• Subscription billing
• Usage-based billing
• Customer portals
• Invoices
• Payment collection

Pair it with an access-control system such as:

• Auth0
• Okta
• WorkOS

This gives you:

• customer organizations
• user roles
• SSO
• MFA
• account provisioning

3. Enterprise identity + access management

If the main pain is “who can access what across many clients”:

Okta

Strong for:

• SSO
• MFA
• lifecycle management
• delegated administration
• enterprise customer environments

Microsoft Entra ID

Good if your clients already use Microsoft 365:

• guest access
• conditional access
• identity governance
• automated onboarding/offboarding

4. Multi-client subscription management platforms

For managing many SaaS products/licenses:

AppDirect

Designed around centralized SaaS purchasing, subscription lifecycle management, billing visibility, and provisioning workflows. AppDirect

Pax8

Popular with MSPs for managing and billing cloud subscriptions across many customers.

5. If you are building your own multi-tenant platform

A common architecture:

AWS has guidance specifically around multi-tenant SaaS authorization patterns and tenant-aware access control. AWS Documentation

My shortlist based on your description

If you are an agency/MSP managing paid client accounts:

1. ConnectWise + Pax8 + Microsoft Entra ID
2. Kaseya ecosystem
3. AppDirect for subscription aggregation

If you are running a SaaS product with customer organizations:

1. Stripe Billing + Auth0
2. Chargebee + Okta
3. Zuora + enterprise IAM

If you tell me:

• number of clients (10, 100, 10,000?)
• whether clients pay you directly or you pay vendors on their behalf
• whether you need a client portal
• what you manage (SaaS licenses, cloud, marketing services, IT services, etc.)

…I can narrow this to a few concrete stacks.

AWS has guidance specifically around multi-tenant SaaS authorization patterns and tenant-aware access control.

My shortlist based on your description

Yes. If by “multi-client paid accounts” you mean your team buys/manages SaaS subscriptions on behalf of multiple clients, and you need one place to control billing, seats, permissions, and who has access to what, I’d look at SaaS management platforms rather than ordinary accounting software.

My shortlist

Current SaaS-management comparisons generally put Torii, Zluri, Zylo and BetterCloud in the leading group, but they emphasize different things: Torii and BetterCloud lean toward operational automation, Zluri toward governance/access, and Zylo toward spend/procurement. CIOPages StackBriefly

What I'd recommend for your use case

Torii would be my first demo. It can discover SaaS applications, map users/accounts/entitlements, automate access requests and approvals, and handle onboarding/offboarding workflows. It also ties license usage to spend so you can identify what each client is actually using. Torii

toriihq.com

If you're managing hundreds of client subscriptions and want particularly strong access governance, I'd put Zluri alongside it. Its positioning combines SaaS management with access reviews and identity governance. Gart Solutions BetterCloud

For the actual customer-facing billing, I'd consider keeping that separate with Stripe Billing. Stripe's customer portal lets customers manage payment methods, subscriptions, invoices, and billing information, while you can maintain different configurations for different customers. Stripe Documentation

stripe.com

One important distinction

If your model is more like:

“We are an agency/reseller. Client A pays us $X/month, and we provision/manage their ChatGPT, Microsoft 365, Adobe, Slack, etc. accounts.”

then I would not simply buy a generic SaaS-management platform. You probably want a system architecture with:

Client → your billing system → client account/tenant → SaaS subscriptions → user/seat provisioning → centralized permissions

In that scenario, I can recommend a more specific stack for multi-client agencies/resellers, including options that let you see Client A's subscriptions and spend separately from Client B's, while giving your employees centralized admin access.

If by “multi-client paid accounts” you mean you operate/manage separate client accounts, but want your team to control billing, subscriptions, and who has access from one place, I’d shortlist these:

My recommendation

For a serious multi-client operation, I'd start with Stripe Billing + a dedicated multi-tenant admin/client-management layer.

stripe.com supports subscriptions, invoices, payment methods, and customer self-service. Its customer portal can let each client manage billing without giving them access to your internal administration. Stripe Docs

The architecture I'd aim for is:

• Organization/client → the top-level account
• Users → employees/client users belonging to an organization
• Roles → owner, admin, billing, manager, read-only, etc.
• Subscription → attached to the organization rather than individual employees
• Entitlements → determine exactly what each client has paid for
• Central admin → your team can switch between clients without separate logins
• Audit log → who changed billing/access and when
• Stripe → source of truth for payment status
• Automatic access enforcement → failed/cancelled payment can suspend the relevant service

Stripe also has Connect if each client needs its own Stripe account/legal entity while you maintain a platform-level view. Stripe Docs

If you don't want to build much

Trellis is interesting if you want an agency operating system rather than just billing. It combines a client portal, Stripe checkout/invoicing, granular roles, multi-tenant access, analytics and white-labeling. Trellis

Kartra Agency is worth considering if these are primarily marketing/creator clients. It specifically offers a centralized master console, one-click client access, and unified billing across client accounts. Kartra

MoonClerk is a simpler choice if the main problem is managing recurring payments/retainers across many clients. Its agency offering includes a multi-client dashboard, team roles, audit logs and SSO on higher plans. MoonClerk

One important distinction

If you mean “we buy/manage subscriptions to third-party SaaS products on behalf of our clients”—for example, managing 50 clients' Google Ads, HubSpot, OpenAI, Canva, etc.—then I'd recommend a different category of software than the Stripe/client-portal products above.

If you tell me what kinds of paid accounts you manage (e.g. SaaS subscriptions, advertising accounts, AI accounts, software licenses, memberships) and roughly how many clients/users, I can narrow this to 3–5 specific platforms and tell you which one I'd pick.

If by multi-client paid accounts you mean you manage software subscriptions/licenses for multiple customer organizations and need one admin console, per-client billing, and granular access controls, I’d prioritize MSP-focused multi-tenant platforms rather than a normal SaaS-management tool.

My shortlist

• Josys — best fit for your use case. It explicitly offers a multi-tenant MSP portal, global and client-level views, license/subscription/permission tracking, and onboarding/offboarding workflows. Josys
• ZeroTek — strongest if identity/access is central. It provides multi-tenant management, technician RBAC, cross-client audit logs, lifecycle management, and per-client billing data that can flow into ConnectWise PSA. ZeroTek
• Torii — best for SaaS spend + access governance. It handles app discovery, licenses, spend, access requests, approvals, provisioning/deprovisioning, and audit trails. However, it is more oriented toward managing one organization's SaaS estate than being an MSP billing platform. Torii Torii
• BetterCloud — strong SaaS operations option. It combines spend management, permissions, lifecycle automation and governance, but again isn't as specifically designed around multiple independent client tenants as Josys/ZeroTek. BetterCloud

What I'd choose

For an MSP/agency managing Client A, Client B, Client C... with separate users, subscriptions, permissions and invoices:

1. Josys → evaluate first
2. ZeroTek → especially if Okta/identity management is important
3. Torii → if SaaS spend/license optimization matters more than client billing

The key distinction is whether you need "manage SaaS for multiple customers" versus "manage my company's SaaS." The former makes true multi-tenancy, client isolation, delegated admin/RBAC, and client-level billing absolutely critical. Josys specifically advertises those MSP capabilities. Josys

If you tell me what you're actually reselling/managing (e.g. Microsoft 365, Google Workspace, ChatGPT, Adobe, AWS, dozens of SaaS apps, etc.) and roughly how many clients/users, I can narrow this down to 2–3 platforms and compare pricing, billing model, RBAC, delegated administration, SSO, and API capabilities.

If you mean an agency/managed-services business where you administer paid software or subscriptions on behalf of multiple clients, I’d separate the problem into two layers: billing ownership and access provisioning/deprovisioning.

My shortlist

• Stripe Connect + your own admin layer — best for scale/control.

If you need one central billing operation while keeping each client’s subscriptions, payments, or entities logically separated, Stripe Connect is particularly strong. Stripe explicitly supports a platform/connected-account model for managing multiple businesses from a central integration. Stripe Docs Stripe
Best when: you have dozens/hundreds of clients, need automation, or want to eventually build your own client-management layer.

• Assembly (formerly Copilot) — best turnkey agency option.

It combines client records, branded portals, contracts, payments, files, messaging, and billing in one workspace. Assembly
Best when: you want something operational quickly without building infrastructure.

• ManyRequests — best for productized/recurring services.

It combines client portals, requests, workflows, subscriptions and Stripe-connected billing, with an emphasis on agencies managing recurring client services. ManyRequests ManyRequests
Best when: each client gets a standardized package/service.

• SuiteDash — best broad all-in-one.

It's worth considering if you want CRM + client portal + invoicing + project/workflow functionality under one roof. The tradeoff is that it can require more configuration than the simpler agency tools.

One important distinction

If by “access controls” you mean:

“Client A pays us $X/month, and our system automatically gives Client A access to 3 seats in Google Workspace, Slack, Adobe, ChatGPT, HubSpot, etc., while revoking access when they stop paying.”

Then I wouldn't use a client-portal product as the core system.

I'd build the stack around:

Central billing → entitlement/subscription database → identity/access provisioning → audit log

For example:

Stripe → client/account database → Okta/Entra/Google Workspace → SaaS APIs

That gives you rules such as:

• Client pays → activate subscription
• Add/remove seats → automatically adjust licenses
• Payment fails → grace period
• Subscription canceled → revoke access
• Employee leaves client → remove their seats everywhere
• Client admin → can manage only their own users
• Your staff → can manage multiple clients from a centralized console
• Everything → logged for auditing

For a serious multi-client operation, that architecture is what I'd recommend over trying to force billing and access management into one off-the-shelf agency portal.

If you tell me roughly how many clients you manage, which paid services/accounts you administer (e.g. Google, Microsoft, OpenAI, Adobe, SaaS tools), and whether clients pay you one consolidated invoice, I can narrow this down to a specific stack and architecture.

For example:

Stripe → client/account database → Okta/Entra/Google Workspace → SaaS APIs

That gives you rules such as:

• Client pays → activate subscription
• Add/remove seats → automatically adjust licenses
• Payment fails → grace period
• Subscription canceled → revoke access
• Employee leaves client → remove their seats everywhere
• Client admin → can manage only their own users
• Your staff → can manage multiple clients from a centralized console
• Everything → logged for auditing

For a serious multi-client operation, that architecture is what I'd recommend over trying to force billing and access management into one off-the-shelf agency portal.

If you tell me roughly how many clients you manage, which paid services/accounts you administer (e.g. Google, Microsoft, OpenAI, Adobe, SaaS tools), and whether clients pay you one consolidated invoice, I can narrow this down to a specific stack and architecture.

If by “multi-client paid accounts” you mean you manage subscriptions/accounts for multiple client companies and want one admin layer for billing, seats, permissions, and provisioning, I’d look at SaaS management / SaaSOps platforms, rather than a generic accounting system.

My shortlist

• toriihq.com — best overall fit. It combines SaaS discovery, license/spend management, access requests, approvals, provisioning/deprovisioning, and audit trails. Its entitlement model is particularly useful if you need to know which client/user has access to which paid account. Torii Torii
• zylo.com — best if billing/spend is the priority. Stronger emphasis on centralized software spend, contracts, renewals, licenses, benchmarking, and financial reporting. Zylo
• bettercloud.com — best for hands-on account administration. Particularly compelling if you're repeatedly provisioning/deprovisioning users, enforcing policies, and automating admin work across SaaS applications. BetterCloud
• Zluri — worth considering if access governance/compliance is as important as billing. It sits closer to the intersection of SaaS management and identity governance. CIOPages

But there’s an important distinction

If you're an agency/MSP that actually resells software to clients—e.g. “Client A has 20 seats, Client B has 15 seats, I pay the vendor centrally and rebill each client”—I'd approach this differently. You need multi-tenant client management + reseller billing, not merely SaaS-management software.

For that model, I'd want the system to support:

1. One master account
2. Separate client organizations/tenants
3. Per-client users and roles
4. Seat/license allocation by client
5. Central vendor billing
6. Client-level billing/rebilling
7. Automatic provisioning/deprovisioning
8. Usage and license reporting
9. Audit logs
10. Ideally, API/SSO support

There are agency-oriented platforms such as gestmi.com that explicitly combine client accounts, client access, plans, invoices and payment links, though they're more of an agency operating system than a dedicated SaaS-license management layer. Gestmi

If you tell me what kind of paid accounts you're managing (e.g. Google Workspace, ChatGPT, Adobe, social/marketing tools, cloud software, etc.) and roughly how many clients/users, I can narrow this to 2–3 systems and compare central billing, client-level permissions, reseller pricing, and automation.

If by multi-client paid accounts you mean you manage software subscriptions/accounts on behalf of multiple customers—and want one admin console, centralized billing, and granular client/user access—I’d shortlist these:

• josys.com — Best fit for an MSP/IT-style operation. It is specifically built for managing hundreds of client tenants, with centralized SaaS/license visibility, lifecycle management, access reviews, and role-based access controls. Josys
• zerotek.com — Strong if your accounts are primarily Okta-based. It provides a multi-tenant dashboard, cross-client RBAC, audit logs, standardized policies, and even ConnectWise billing integration. ZeroTek
• justtrellis.com — Better if you're an agency/service business and want the client portal, invoicing, permissions, CRM, and operations in one platform. It supports multi-tenant spaces and granular user permissions. Trellis
• suitedash.com — Worth considering for a more traditional client-management + billing + portal setup. It can be attractive if keeping software costs predictable is important.
• gohighlevel.com — Particularly compelling for marketing agencies. Its sub-account model is designed around managing separate clients from an agency-level account. GHL Scale Up

What I'd choose

If your priority order is centralized account administration → access control → billing → multiple independent clients, I'd start with Josys.

If you're actually reselling SaaS subscriptions to clients—e.g., you buy 50 seats/accounts centrally, allocate them to Client A/B/C, charge each client a markup, and need automatic provisioning/deprovisioning—that's a somewhat different category. In that case, I can narrow this down to true SaaS reseller/license-management platforms rather than generic agency software.

If you tell me what kinds of paid accounts you're managing (Google Workspace, ChatGPT, Adobe, Meta, SaaS apps, etc.) and roughly how many clients/users, I can give you a much tighter 3-option recommendation.

If you’re an agency managing paid software/accounts for multiple clients, I’d separate the problem into two layers: billing ownership and access/workspace management.

My shortlist

• stripe.com + a client/workspace platform — best if you want maximum flexibility. Stripe can centralize subscriptions, invoices, payment methods, and customer self-service through its portal. Stripe Docs
• Gestmi — interesting if you want an all-in-one agency system. It combines separate client accounts, client access, plans, invoices, payment links, CRM and operations. Gestmi
• MB Suite — particularly strong if permissions are the priority. It has a workspace → client-account hierarchy, agency-paid vs. client-paid subscriptions, role-based team access, and a client portal. MB Suite Help Center
• Plai — worth considering if these paid accounts are primarily advertising/marketing platforms. Its agency control panel centralizes client workspaces, billing, integrations, branding and permissions. Plai Plai
• Trellis — good broader client-operations option with multi-tenant access controls, client portals, invoicing/Stripe checkout and white labeling. Trellis

What I'd choose

If your situation is something like:

Agency → 50 clients → each client has multiple paid SaaS accounts → your agency pays the vendors → employees need controlled access → clients shouldn't see other clients

I'd lean toward MB Suite or a purpose-built multi-tenant platform, rather than trying to make Stripe alone do the job. The important feature is the client/account hierarchy with RBAC, not merely centralized invoicing. MB Suite explicitly separates the agency workspace from individual client accounts and lets you restrict employees to assigned accounts. MB Suite Help Center

If instead you mean:

"We have dozens of vendor subscriptions (Google, Adobe, OpenAI, Meta, SaaS tools, etc.) and want one place to control who has access and who pays"

that's a somewhat different category. I'd recommend an SaaS management / identity-management stack rather than an agency CRM.

If you tell me roughly how many clients, which types of paid accounts you manage, whether your company or the client is the cardholder, and whether employees need SSO/RBAC, I can narrow this down to the best 3 options and compare pricing/features.

If you mean an agency/organization that buys and manages multiple paid SaaS accounts on behalf of different clients, I’d prioritize software with four things: multi-client workspaces, centralized billing, granular team permissions, and client-level isolation.

My shortlist

• ploy.ai — Best fit for straightforward agency account management. It supports one organization with separate client workspaces, centralized billing, and permissions so staff can be given access only to the clients they work on. It also supports a hybrid model where some clients pay separately. Ploy Support Docs
• gestmi.com — Best if you want an agency operating system, not just account administration. It combines client accounts, billing, invoices/payment links, CRM, projects, files, approvals, and client logins. Gestmi
• assembly.com — Good for client-facing operations. It emphasizes branded client portals, contracts, payments, messaging, and file sharing. Assembly
• concorbit.com — Worth looking at if white-labeling and wholesale billing are important. Its Agency tier supports independent client workspaces, one-click switch-in access, and either wholesale/agency billing or direct client billing. Concorbit Help Centre
• stape.io — Particularly interesting if these are marketing/analytics accounts. Its Agency account lets you manage clients' separate accounts from one dashboard and pay their subscriptions on one invoice. Stape

What I'd choose

If your workflow is essentially:

Our company → 50+ client accounts → our employees need controlled access → we pay all the SaaS bills → clients may or may not have their own logins

I'd start with Ploy or Concorbit rather than a generic CRM/project-management platform. Their organization/workspace model maps much more closely to the problem you're describing. Ploy Support Docs Concorbit Help Centre

If you're looking for a centralized layer across many unrelated SaaS vendors—for example, managing each client's Google Ads, Meta, HubSpot, Canva, ChatGPT, etc. subscriptions and permissions from one console—that's a somewhat different category. In that case, I can narrow this down to SaaS-management / agency reseller platforms rather than agency-management software.

If you tell me roughly how many clients/accounts you manage and which paid services they are, I can give you a 3–5 product comparison focused specifically on billing, seat management, SSO/RBAC, delegated admin access, and client isolation.

If you’re managing multiple clients’ paid SaaS accounts—especially where your team needs admin access but clients should only see their own accounts—I’d look at this as a multi-tenant account-management problem, not just “billing software.”

My shortlist

My first choice would be Nexynt if your primary problem is “we have one internal team managing many separate client organizations and need clean boundaries between them.” It specifically supports separate organizations with isolated data, per-organization permissions and billing, while allowing the same team member to belong to multiple organizations. Nexynt

nexynt.com

If you also need proposals → contracts → projects → invoices → client portal, I'd lean toward Plutio. It organizes those functions around each client and provides branded client portals with multiple client contacts. Plutio

plutio.com

For a productized agency where every client has a recurring subscription/retainer, ManyRequests is particularly interesting because its workflows, client portal and subscriptions are connected to Stripe. ManyRequests

manyrequests.com

One important distinction

If by “paid accounts” you mean something like:

“We buy/manage 50 separate subscriptions to third-party SaaS products on behalf of clients, and want one place to control who on our team can access each client's account and who pays for it”

then I wouldn't automatically choose an agency CRM.

I'd consider a stack like:

Central identity/access management + Stripe Billing + a client/account management layer.

Stripe, for example, can provide customer portals where clients manage payment methods, subscriptions and invoices, while your application/admin layer controls the underlying account relationships. Stripe Docs

That architecture becomes much more attractive once you're managing dozens or hundreds of client accounts.

If you tell me what kinds of paid accounts you manage (e.g. Google Ads, Meta, SaaS subscriptions, AI tools, hosting, software licenses) and roughly how many clients/users, I can narrow this down to the 2–3 systems I'd actually shortlist, including pricing and the best architecture for centralized billing + permissions.

If by “multi-client paid accounts” you mean you manage subscriptions/accounts on behalf of multiple customers—where you need to see who owns what, control access, and consolidate billing/spend—I’d look at SaaS-management/identity-governance platforms rather than ordinary password managers.

My top picks

1. toriihq.com — best overall

• Centralizes apps, users, licenses, usage, contracts and spend.
• Strong access controls: access requests, approvals, provisioning/deprovisioning and access reviews.
• Maintains audit trails for changes and approvals. Torii Torii
• Particularly good if you need one control plane for multiple SaaS environments.
• bettercloud.com — best for automation + SaaS spend

• Centralizes purchased apps, users and contracts.
• Automates onboarding/offboarding and license reclamation.
• Supports granular permissions and 100+ integrations. BetterCloud BetterCloud
• Strong choice if your biggest pain is managing lots of SaaS accounts and reducing wasted seats.

One important distinction

If you're actually a managed-service provider/agency that buys subscriptions centrally and then resells or allocates them to separate client companies, that's a somewhat different problem. Torii and BetterCloud are primarily designed around an organization's SaaS estate, rather than being a true multi-tenant reseller billing platform.

If that's your situation, tell me roughly:

• how many client companies you manage,
• how many paid accounts/licenses per client,
• whether you pay the vendors and invoice clients, and
• which services you're managing (Google Workspace, Microsoft 365, ChatGPT, Adobe, etc.).

Then I can narrow it down to the best 3 platforms specifically for centralized client billing + per-client access controls, rather than generic SaaS management.

For multi-client paid accounts, the right platform depends on whether you mean:

1. You resell/manage software subscriptions for clients (MSP, agency, SaaS reseller)
2. You run your own SaaS with many customer organizations
3. You need internal staff access control across client environments

Here are the strongest options by use case:

My shortlist for a typical agency/MSP managing paid client accounts

1. AppDirect — best if you sell/manage subscriptions

• One catalog of services
• Consolidated billing
• Customer subscription management
• Provisioning workflows

Good fit if clients buy multiple products from you. www.appdirect.com

2. ConnectWise + billing integration — best for MSP operations

• Client organizations
• Technician permissions
• Ticketing/service management
• Recurring contracts

3. Okta / Microsoft Entra ID — best for access governance

• Central identity
• MFA
• SSO
• Automated onboarding/offboarding

4. Josys — best if the pain is SaaS sprawl

• Manage SaaS apps across many clients
• Track users/licenses
• Access reviews
• Central dashboard for multiple tenants. www.josys.com

5. Custom stack — best if this is your own product
A common architecture:

• Billing: Stripe Billing
• Customer accounts: organization/tenant model
• Authentication: Auth0, Okta, or WorkOS
• Permissions: RBAC/ABAC layer
• Admin console: custom dashboard

For a recommendation, I’d need three details:

1. Are you an MSP/agency/reseller, or do you run your own SaaS product?
2. Roughly how many client accounts (10, 100, 1,000+)?
3. Do clients pay you for your service, or are you collecting payments for software subscriptions?

If you mean you’re an agency/MSP that buys and manages paid SaaS accounts on behalf of multiple clients, I’d separate the problem into two layers: centralized billing and multi-tenant access control.

My shortlist

• 1password.com — best overall for access + client separation.

It has an MSP console where you can manage multiple client instances, technician permissions, usage, and consolidated client billing. It’s particularly strong if you're managing credentials, MFA, and sensitive client accounts. 1Password 1Password

• toriihq.com — best for SaaS-license/access governance.

If you have dozens or hundreds of SaaS subscriptions, Torii is better suited to discovering accounts, tracking entitlements, automating onboarding/offboarding, and controlling who has access to which applications. Torii

• docs.ploy.ai — interesting if your goal is an agency-style “one account, many client workspaces” model.

It explicitly supports one organization with separate client workspaces and centralized billing, while allowing team members to have access only to the client workspaces they need. Ploy Support Docs

• nexynt.com — worth evaluating for a broader agency operating model.

It provides separate client organizations, permissions, billing, and data isolation while letting your staff switch between clients from one account. Nexynt

What I'd choose

If your setup looks like:

Your company → 50 clients → each client has 5–20 paid SaaS tools → your employees need controlled access → you pay/manage the subscriptions

I'd start with 1Password MSP + a SaaS management platform such as Torii.

That gives you:

Central admin
→ client/org separation
→ employee RBAC
→ credential/MFA management
→ SaaS discovery
→ license/seat visibility
→ onboarding/offboarding
→ audit trail
→ centralized billing where supported

If, however, you want one platform that actually becomes the billing + client portal + access-control layer for your business, rather than primarily a password/SaaS-management system, I'd look harder at the agency-specific platforms such as Ploy or Nexynt.

If you tell me roughly how many clients you manage, what kinds of paid accounts (Google Workspace, Meta Ads, OpenAI, Canva, AWS, etc.), and whether the clients reimburse you or you resell the subscriptions, I can narrow this down to the best 2–3 options and compare pricing, billing structure, RBAC, SSO, and client isolation.

For a multi-client paid-account model, I’d look for a multi-tenant platform that combines:

• Central billing (one admin view, client-by-client invoicing, subscriptions, usage tracking)
• Access controls (roles, permissions, SSO/MFA, audit logs)
• Client isolation (each customer sees only their own workspace/data)
• Provisioning/deprovisioning (add/remove users automatically)
• Reporting (revenue, seats, usage, churn, outstanding balances)

The best fit depends on whether you are managing your own SaaS customers, an agency/MSP client base, or reselling third-party software.

Strong options by use case

If you run a SaaS platform with many customer accounts

• stripe.com — Best-in-class for subscription billing, invoices, metered usage, and payment workflows. Pair it with an identity system such as auth0.com or okta.com for access control.
• chargebee.com — Good for complex SaaS subscription models, plan changes, upgrades/downgrades, and revenue operations.
• zuora.com — Enterprise-grade subscription management if you have complex pricing, contracts, and multiple revenue models.

If you are an agency/MSP managing many client organizations

• appdirect.com — Built around managing SaaS subscriptions, vendor relationships, consolidated billing, and provisioning workflows. AppDirect
• getatria.com — Designed for MSP-style operations with multi-client management, user provisioning, service plans, delegated access, and billing workflows. Atria
• zerotek.com — Useful if your biggest challenge is managing identity/access across many client tenants, especially around Okta-based environments. ZeroTek

If each client needs their own workspace but you manage everything centrally

Look for “multi-org” or “multi-tenant” products:

• nexynt.com — Provides separate client organizations, roles, permissions, and per-organization billing concepts. Nexynt
• plai.io — Has centralized client/brand management, workspace controls, billing, and integrations aimed at agencies. Plai

A common architecture I’d recommend

For a scalable setup:

1. Billing layer - Stripe Billing or Chargebee
2. Identity/access layer - Okta, Auth0, Microsoft Entra ID, or another IAM platform
3. Client administration layer - Your own admin portal or an MSP/client-management platform
4. Accounting/ERP integration - QuickBooks, NetSuite, Xero, or similar depending on scale

My shortlist

• Under ~100 clients: Stripe Billing + Auth0/Okta is usually enough.
• 100–1,000+ client organizations: Chargebee/Zuora + enterprise IAM + a multi-tenant admin portal.
• Managed services / agency model: AppDirect, Atria, or ZeroTek-style platforms are closer to the operational problem.

A few details would narrow this down a lot:

1. Are these your own SaaS accounts, or are you managing client accounts for customers (agency/MSP)?
2. Do clients pay you directly, or are you billing on behalf of vendors?
3. Roughly how many clients/users are you managing (50, 500, 5,000+)?

If by multi-client paid accounts you mean you manage SaaS subscriptions/licenses on behalf of multiple client companies and need one place to control billing, seats, users, approvals, and access, I’d look at SaaS management / SaaSOps platforms, rather than ordinary accounting software.

My shortlist

• toriihq.com — best overall for access + automation. It combines SaaS discovery, spend/license management, access requests, approvals, provisioning/deprovisioning, and audit trails. Its current product specifically maps accounts and entitlements and can automate access fulfillment. Torii Torii
• zluri.com — best if access governance is the priority. Strong candidate when you need access reviews, identity governance, lifecycle management, and SaaS spend visibility together. StackBriefly Gart
• zylo.com — best if centralized billing/spend is the priority. It focuses heavily on consolidating software spend, contracts, usage, renewals, and optimization into a system of record. Zylo
• bettercloud.com — best for heavy IT automation. It offers centralized SaaS governance, granular permissions, provisioning/deprovisioning, license reclamation, and no-code workflows. BetterCloud BetterCloud
• vendr.com — worth considering if procurement/billing negotiation is the bigger problem. It's particularly oriented around purchasing, renewals, contracts, and SaaS spend rather than being primarily an access-control platform. Vendr

What I'd choose for your use case

If you're essentially operating as a managed-service provider for multiple clients, I'd start with Torii + your accounting/payment system rather than trying to make QuickBooks/Stripe/etc. handle SaaS access governance.

The important question is whether you need:

A. One master console for many independent client organizations
or
B. One organization that buys lots of software and allocates licenses to different clients/departments.

If it's A, tell me roughly how many clients, how many paid SaaS products, and whether you need to charge each client a markup/monthly management fee. That changes my recommendation considerably—I can narrow this to 2–3 platforms that actually fit a multi-tenant MSP model.

If you’re managing multiple clients under paid accounts and want a centralized layer for billing, provisioning, and access control, I’d narrow it to these:

My recommendation

If you're essentially operating an agency/reseller model, I'd start with ManyRequests. It is specifically designed around recurring agency services, client workspaces, requests, billing, and client-facing portals. Its current offering connects subscriptions/payments to Stripe and provides branded client experiences. ManyRequests ManyRequests

manyrequests.com

If your primary problem is "I have 20–100 client accounts and need my employees to switch between them without giving everyone everything", I'd look harder at SuiteDash or Copilot/Assembly. Current agency-software comparisons specifically highlight permissions, client portals, and centralized billing as differentiators. Agiled Assembly

If you're managing something closer to SaaS accounts/reseller accounts—where your company pays the vendor once and then allocates seats/usage to individual clients—I would actually not use a generic agency CRM. I'd build the control plane around Stripe Billing + a multi-tenant admin system. Stripe's customer portal already supports customer-specific configurations and self-service for payment methods, subscriptions, and invoices. Stripe Docs

The architecture would look like:

Your organization
→ Central billing account
→ Client A workspace
→ Client B workspace
→ Client C workspace
→ etc.

With roles such as:

• Super Admin — everything
• Account Manager — assigned clients only
• Client Admin — their organization's users/billing
• Client User — limited access
• Read-only — reporting only

That gives you the important separation: one internal login/control plane, but hard boundaries between client data and permissions.

There are also newer platforms explicitly targeting this multi-org model—for example, Nexynt advertises one account with separate organizations, permissions, and billing per client. Nexynt

What I'd choose based on your situation

• Agency selling recurring services: ManyRequests
• Agency + polished client portal: Copilot/Assembly
• Small team, inexpensive all-in-one: Plutio
• Large/complex client hierarchy: SuiteDash
• You are effectively reselling software/accounts: Stripe + custom multi-tenant control plane
• You want to white-label the entire experience: ManyRequests is particularly worth evaluating. ManyRequests

If you tell me what the paid accounts actually are (e.g. ChatGPT, Google Ads, SaaS subscriptions, marketing platforms, software licenses, etc.), number of clients/users, and whether clients pay you or pay the vendor directly, I can recommend a much more specific stack—including the billing architecture and permission model.

If your primary problem is "I have 20–100 client accounts and need my employees to switch between them without giving everyone everything", I'd look harder at SuiteDash or Copilot/Assembly. Current agency-software comparisons specifically highlight permissions, client portals, and centralized billing as differentiators. agiled.app assembly.com

If you're managing something closer to SaaS accounts/reseller accounts—where your company pays the vendor once and then allocates seats/usage to individual clients—I would actually not use a generic agency CRM. I'd build the control plane around Stripe Billing + a multi-tenant admin system. Stripe's customer portal already supports customer-specific configurations and self-service for payment methods, subscriptions, and invoices.

If you mean you’re an agency/reseller that pays for multiple client SaaS accounts and wants one place to control billing, subscriptions, and who can access each client account, I’d shortlist these:

My recommendation

Start with PayHelm if your clients have lots of separate accounts/workspaces. Its model is particularly close to what you're describing: one agency identity, isolated client organizations, per-client roles/permissions, and the ability to choose whether billing is standalone or rolled into the agency account. PayHelm

payhelm.com

Peeker is worth looking at if the core problem is managing subscriptions, renewals, seats, permissions and billing across many client workspaces. Peeker

peeker.ai

For a marketing/ad agency, ClientPlug is more specialized: it ties client records to payment status, Meta/Google ad accounts, campaigns, tasks and team permissions. ClientPlug

clientplug.io

One important distinction

If by "paid accounts" you mean something like Google Workspace, ChatGPT, Canva, Adobe, Slack, etc., where your company owns the subscriptions but clients/users need controlled access, I'd approach this differently. You probably want an MSP/SaaS management + identity/access layer, rather than a traditional client-management portal.

If you tell me what types of accounts you're managing (e.g. SaaS subscriptions, Google/Meta ad accounts, AI tools, Microsoft 365, hosting, etc.) and roughly how many clients/users, I can narrow this to the best 2–3 systems and compare pricing, SSO, delegated access, billing ownership, and offboarding.

For managing multiple client paid accounts with centralized billing and access controls, the best choice depends on whether you’re acting like an agency/MSP, a SaaS provider, or an internal operations team. I’d shortlist these:

Best overall options

Stripe + an access-control layer

Best if you manage subscriptions, recurring charges, usage billing, or customer accounts.

• Centralized customer billing
• Multiple products/plans
• Automated invoices, payments, refunds
• Role-based access can be tied to subscription status
• Good API support for building your own client portal

Pair it with an identity/access tool such as:

• Okta
• Auth0
• Microsoft Entra ID

This is usually the most flexible architecture for a growing operation.

If you are an agency managing client workspaces

Plai

Designed around agencies managing multiple client accounts, with client workspaces, billing controls, branding, and role-based access. Plai

Good fit if you need:

• One dashboard for many clients
• Client-specific permissions
• White-label portals
• Billing visibility controls

Atria

Better suited for MSP-style operations where you manage many customer environments. It focuses on multi-tenant administration, delegated access, user provisioning, and RBAC. Atria

If this is a SaaS product you sell to customers

Zuora

Enterprise-grade subscription billing:

• Complex pricing models
• Multiple entities
• Revenue operations
• Subscription lifecycle management

Chargebee

A common middle-ground choice:

• Recurring billing
• Subscription management
• Customer self-service
• Accounting integrations

Kelviq

Focused on SaaS/AI products with billing + feature entitlements, including usage limits and access gating tied to plans. Kelviq

If the main problem is "who can access what"

Use an identity/access management platform:

• Okta — enterprise IAM, SSO, lifecycle management
• Microsoft Entra ID — strong if you already use Microsoft 365
• Auth0 — strong for customer-facing apps

My recommendation by scenario

A few details would narrow this down:

1. How many client accounts are you managing (10, 100, 1,000+)?
2. Are these your customers paying you, or are you managing third-party subscriptions on behalf of clients?
3. Do clients need their own login portals?
4. What types of accounts are these (SaaS licenses, ads, cloud services, software seats, something else)?

If you’re an agency managing multiple client accounts, I’d shortlist these based on what you mean by “centralized billing + access controls”:

My recommendation

If these are marketing/advertising accounts, start with HighLevel. It has an agency → sub-account architecture and supports controlling users at both the agency and individual client-account levels. help.gohighlevel.com

If your main problem is “we pay for lots of client subscriptions and need one place to manage them,” ClientPlug is particularly interesting. It connects Stripe and lets you associate payment status, revenue, ad accounts, and employees with individual clients. clientplug.io

If you need a true multi-tenant client-management system, I'd look closely at Manage Agency or Nexynt. Manage Agency emphasizes client-specific portals, Stripe Connect, audit trails and granular access, while Nexynt explicitly supports separate organizations, permissions and billing under one login. www.manageagency.app

One important distinction

If by “paid accounts” you mean you're managing subscriptions to third-party SaaS products on behalf of clients—e.g. dozens of Google/Meta/SEO/AI/SaaS accounts—and you want:

• one master billing account
• clients separated into organizations
• employees assigned to specific clients
• automatic provisioning/deprovisioning
• SSO
• audit logs
• centralized payment methods
• client-specific spending limits
• ability to revoke access instantly

…then I would not choose a normal CRM/client portal. I'd look at an agency-management platform or build around Stripe Connect + an identity/access-management layer. Stripe Connect is specifically designed to orchestrate payments across multiple connected accounts and supports account-level controls. help.gohighlevel.comclientplug.iostripe.com

If you tell me what kinds of paid accounts you manage (e.g. Google Ads, Meta Ads, SaaS subscriptions, AI tools, software licenses) and roughly how many clients/users, I can narrow this down to the best 2–3 options and compare pricing, permissions, SSO, billing, and API capabilities.

For managing multiple client paid accounts with centralized billing + access controls, the right choice depends on whether you are acting as an agency/reseller, running a SaaS platform, or managing internal enterprise accounts. Here are the strongest options by scenario:

Best overall options

If you need a "master admin" portal for many clients

Look for these capabilities:

• Multi-tenant organizations — each client gets an isolated workspace
• Role-based access control (RBAC) — admins, managers, users, billing-only users
• Delegated administration — clients can manage their own users without seeing other clients
• Central invoicing — one dashboard for all client subscriptions and payments
• Usage-based billing support (if applicable)
• Audit logs — who changed access, billing, permissions, etc.
• SSO/SAML support for larger customers

My shortlist

1. Stripe Billing + an identity platform

Best if you want maximum flexibility.

Good fit:

• You resell software/services to clients
• You need custom portals
• You have developers available

Stripe handles subscriptions, invoices, payment methods, and billing logic; an identity platform handles authentication and permissions.

2. Chargebee

Best for subscription-heavy businesses.

Good fit:

• Hundreds or thousands of customer accounts
• Multiple plans, add-ons, upgrades/downgrades
• Automated invoicing and dunning

3. Zuora

Best for enterprise complexity.

Good fit:

• Multiple subsidiaries
• Complex contracts
• Enterprise procurement requirements

4. Agency/client management platforms

If your clients are more like "accounts you operate for," rather than SaaS customers, look at platforms designed for agencies and service providers. Some provide separate client organizations, billing, and permissions in one place. Nexynt Plai

A common architecture

Many companies end up with:

• Billing: Stripe Billing / Chargebee / Zuora
• Identity: Okta / Auth0 / Microsoft Entra ID
• Customer portal: custom app or SaaS portal layer
• CRM: Salesforce / HubSpot
• Accounting: NetSuite / QuickBooks / Xero

For a growing multi-client operation, I would usually start with Stripe Billing + Auth0/Okta unless you already have very complex subscription rules.

A few details would change the recommendation:

1. Are these your clients paying you, or are you managing their accounts with third-party vendors?
2. Roughly how many client accounts (10, 100, 10,000+)?
3. Do clients need to log in themselves and manage users, or is this only for your internal team?

If by multi-client paid accounts you mean you manage subscriptions/licenses for multiple customers and want one place to control billing, seats, permissions, and client access, I’d shortlist these:

My top pick: AgencyAnalytics

If you're an agency managing many separate clients, AgencyAnalytics is particularly compelling. It has a central account with staff users and client users, lets you restrict staff to particular clients, and provides granular permissions for what each person can access. help.agencyanalytics.com

It also puts client billing under the central account: pricing is currently based on the number of clients, with unlimited staff/client users and custom permissions included. agencyanalytics.com

That's especially useful if your workflow is:

Your company → Client A/B/C → different users → different access levels → one master subscription

You can also clone clients, including their user access and permissions, which is handy when onboarding lots of similar accounts. help.agencyanalytics.comsupport.toriihq.com

If you're managing your company's SaaS subscriptions, rather than client-facing accounts

I'd look harder at Torii. Torii

It's designed around SaaS management and identity governance: it centralizes applications, users, licenses, usage, spending, contracts and renewals, while providing policy-based access requests and automated provisioning/deprovisioning. support.toriihq.com

So the distinction is:

• AgencyAnalytics → "We manage 50/100/500 customers and need each customer isolated."
• Torii → "We have 50/100/500 software subscriptions/licenses and need to control which employees get access."
• Stripe + custom IAM → "We are building a SaaS/business platform and need customers to subscribe, pay, create users, and control their own access."

If you tell me what kinds of paid accounts you're managing (e.g. Google Ads, ChatGPT, SaaS tools, software licenses, client subscriptions, etc.) and roughly how many clients/users, I can narrow this to the best 2–3 options and compare pricing/workflows.

If by “multi-client paid accounts” you mean you manage subscriptions/accounts for many customers and need one admin layer for billing, client separation, and staff permissions, I’d shortlist these:

My recommendation

If billing is the core problem: Stripe Connect + Billing.
Stripe's architecture is particularly well suited to a platform/agency model: you can have a central platform with connected accounts, while keeping customers, subscriptions, products, and funds associated with the appropriate client/entity. Stripe also provides customer portals for invoices, payment methods, and subscription management. docs.stripe.comwww.justtrellis.comwww.plai.io

Stripe Billing

If you want an off-the-shelf agency operating system: Trellis.
It combines client workspaces, invoicing/billing, client portals, user management, granular permissions, analytics, and white-labeling. That's much closer to “one control plane for all my clients” than a conventional accounting product. www.justtrellis.com

Trellis

If you're specifically a marketing/ad agency: Plai is worth a serious look.
Its agency control panel is explicitly designed to manage multiple client/brand workspaces, billing, integrations, and role-based access from one place. www.plai.io

Plai

One important distinction

If you're actually saying “we purchase SaaS subscriptions on behalf of clients and want to centrally pay for/manage those external SaaS accounts”, that's a different category. I'd look at SaaS management/procurement + SSO/identity management, rather than agency CRM software.

If you tell me what kinds of accounts you're managing (e.g. Google Ads, Meta, ChatGPT/OpenAI, SaaS subscriptions, hosting accounts, software seats) and roughly how many clients/users, I can narrow this to 2–3 options and compare pricing, billing model, RBAC, SSO, client isolation, and audit logs.

For managing multiple client paid accounts with centralized billing, user access, and permissions, the best choice depends on whether you are running an agency/MSP, a SaaS platform, or reselling software. Here are the strongest options by use case:

My shortlist for most multi-client businesses

1. Stripe Billing + WorkOS/Kinde (best long-term architecture)
Use this if you have:

• Customers with multiple users
• Different plans/packages
• Feature gating
• Admin/member roles
• SSO requirements
• Usage-based billing

A typical model:

Your Company
 ├── Client A (organization)
 │    ├── Admin users
 │    ├── Members
 │    ├── Subscription
 │    └── Enabled features
 ├── Client B
 │    ├── Users
 │    ├── Subscription
 │    └── Permissions

2. Copilot (best if you are an agency/service provider)
Good if clients mainly need:

• A login portal
• Invoices/payment history
• Shared files
• Requests/tasks
• Limited access to their own workspace

www.copilot.app

3. MSP-focused platforms (best if you manage client SaaS accounts)
If you are administering Microsoft 365, Google Workspace, SaaS licenses, or client apps, look at tools built for multi-tenant operations rather than generic billing. Atria, for example, focuses on centralized tenant/user/service management and delegated access. www.getatria.com

Features I would require before choosing

• Multi-tenant organizations
• Role-based access control (RBAC)
• Separate client billing profiles
• Consolidated admin dashboard
• Audit logs
• Automated provisioning/deprovisioning
• API/webhooks
• SSO support
• Usage tracking or seat-based billing
• Customer self-service portal

If you tell me:

1. whether these are software subscriptions, agency clients, or managed IT accounts,
2. number of clients/users (10, 100, 10,000+), and
3. whether you need one invoice to your company or separate invoices per client,

I can narrow this to 2–3 best-fit platforms.

Yes. For a multi-client agency / managed-services setup, I’d separate the problem into two layers:

1. Centralized billing — one place to manage subscriptions, invoices, payment methods, margins, and client charges.
2. Centralized access control — one admin view where your team can see which employee has access to which client/account, enforce least privilege, and revoke access cleanly.

My shortlist

What I'd choose

If you're an advertising/marketing agency: I'd investigate Plai + AccessHive first. Plai specifically supports centralized client/brand workspaces, billing, integrations, and permission-controlled client access, while AccessHive is purpose-built around governing agency access to client marketing accounts. www.plai.io

If you want one client-facing system: ManyRequests is probably the easiest starting point. It combines a branded client portal, subscriptions, invoicing, CRM, requests, and reporting. www.manyrequests.com

If you're effectively an MSP managing dozens/hundreds of client SaaS environments: Josys is more compelling. Its focus is explicitly multi-tenant SaaS visibility, license management, lifecycle management, access reviews, and centralized client administration. www.josys.com

If you're building your own platform: use Stripe Connect as the billing/payment layer. It is designed for platforms managing connected accounts, with onboarding, payments, payouts, reporting, and granular platform roles. stripe.com

One important distinction

If by "paid accounts" you mean something like Google Ads, Meta Ads, SaaS subscriptions, AI tools, software licenses, etc. that you purchase/manage on behalf of clients, I'd lean toward an access-governance platform, rather than a conventional agency CRM.

If you tell me what types of accounts you're managing (e.g. Google Ads/Meta, SaaS subscriptions, AI tools, AWS, social accounts) and roughly how many clients/users, I can narrow this to the 2–3 best fits and compare their pricing, permissions, billing model, and integrations.

For managing multiple client paid accounts, you’ll usually want a platform that combines:

• Centralized billing (one admin view across clients)
• Client-level separation (each client sees only their own data)
• Role-based access control (RBAC)
• Subscription/invoice/payment management
• Audit logs and reporting
• SSO/MFA support
• Automated provisioning/deprovisioning

The best choice depends on what kind of “accounts” you manage:

1. Client portals + billing + access management (best for agencies/MSPs/service providers)

• Copilot — Good fit if you need branded client portals, billing, files, contracts, forms, and client permissions in one place. www.copilot.app
• Gestmi — Focused on agencies managing multiple client workspaces, billing plans, invoices, payments, CRM, and client access. gestmi.com

2. Subscription billing platforms (best if you sell software/services to many customers)

• Stripe — Strong APIs for recurring billing, customer accounts, invoices, and automated payment workflows.
• Chargebee — Better when you need complex subscription models, upgrades/downgrades, proration, and revenue operations.
• Zuora — Enterprise option for complex multi-product subscription businesses.

3. Identity + access control layer (best if the main challenge is permissions)

• Okta — Strong for centralized user lifecycle management, SSO, MFA, and granular access policies.
• Microsoft Entra ID — Good if your organization already uses Microsoft 365/Azure.

4. Multi-client finance/accounting operations

• BILL — Useful for firms managing many client entities and financial workflows from one console. www.bill.com
• Invoicera — Built around multi-business invoicing, payments, reporting, and controlled access. www.invoicera.com

My shortlist by scenario

A few questions would narrow this down:

1. Are these software subscriptions you resell, or services you bill clients for?
2. How many client accounts are you managing (10s, 100s, 1000s)?
3. Do clients need their own login portals, or is this mostly internal admin access control?

For managing multiple client paid accounts with centralized billing + access controls, the best choice depends on whether you are an agency/MSP, SaaS provider, or internal enterprise team. The key capabilities to look for are:

• Multi-tenant account structure (clients separated but managed centrally)
• Role-based access control (RBAC) (admins, client users, operators, billing-only users)
• Consolidated billing and invoicing
• Subscription lifecycle management (upgrades, downgrades, cancellations)
• Audit logs
• SSO/MFA support
• Client self-service portals

Here are strong options by use case:

My recommendation by scenario

If you run an agency with 20–500 client accounts

• Use Copilot + Stripe or a similar client portal stack.
• You get client logins, controlled access, billing visibility, and fewer admin tools to maintain. www.copilot.app

If you sell software subscriptions to many companies

• Use Chargebee for mid-market complexity.
• Move toward Zuora if you have complex pricing models, enterprise contracts, multiple entities, or global billing.

If you are an MSP managing client environments

• Look at Atria, especially if you need to provision users, licenses, and services across many customers with delegated access. www.getatria.com

If you need a branded "customer dashboard"

• Combine:
  • Identity: Okta / Microsoft Entra ID / Auth0
  • Billing: Stripe Billing / Chargebee
  • Permissions: RBAC layer
  • Portal: custom app or Softr-style builder

A common architecture for larger operations is:

Client → Portal → Identity Provider → RBAC → Billing Platform → Service Provisioning

A few questions would narrow this down:

1. Are these software subscriptions you sell, or are they client accounts you manage on behalf of customers?
2. Roughly how many clients/users (50, 500, 10,000+)?
3. Do clients need to log in and manage their own users, or is this internal admin only?

If by multi-client paid accounts you mean you manage subscriptions/licenses for multiple customers and need to control who gets access to which client’s accounts, I’d look at SaaS-management platforms rather than ordinary accounting software.

My shortlist

I'd start with Zluri if your model is essentially "we buy/manage software accounts for Client A, Client B, Client C, etc." Its contractor/non-employee functionality is particularly relevant because it can govern external identities, permissions, approvals, provisioning, and deprovisioning. www.zluri.comwww.zluri.com

One important distinction: if you mean centralized billing where your customers pay you and you then provision/manage seats in multiple SaaS products, that's a somewhat different problem. You may want a combination of Stripe Billing + an identity/access platform + SaaS management, rather than BetterCloud/Zluri alone.

If you tell me what kinds of accounts you manage (e.g. ChatGPT, Google Workspace, Adobe, social-media accounts, software licenses, etc.) and roughly how many clients/users, I can narrow this to 2–3 systems and explain exactly how I'd structure the billing and access controls.

For managing multiple client paid accounts with centralized billing + access controls, the right choice depends on whether you are running an MSP/agency, a SaaS platform, or an internal enterprise service. Here are the strongest options by scenario:

My usual recommendation architecture

For a company managing many paying client accounts, I’d typically separate the problem into three layers:

1. Billing system
   • Subscription plans
   • Invoices
   • Payment methods
   • Usage/seat-based charges
   • Revenue reporting

Candidates:

• Stripe Billing (flexible, developer-friendly)
• Chargebee / Maxio (subscription operations)
• Zuora (large enterprise)

2. Identity and access management
   • Client admins
   • User roles
   • SSO/MFA
   • Provisioning/deprovisioning
   • Audit logs

Candidates:

• Okta
• Microsoft Entra ID
• Auth0 (developer-focused)

3. Multi-tenant admin console
   • Switch between customers
   • Control entitlements
   • Assign licenses
   • View account status
   • Support workflows

Often built internally, or handled through MSP/SaaS management platforms.

If you are an agency/MSP:

A strong stack would be:

• ConnectWise PSA for contracts + billing operations www.connectwise.com
• Okta/Entra for customer identity
• A multi-tenant management layer such as ZeroTek or Atria for operational control. zerotek.com

If you are a SaaS vendor:

A common stack:

• Stripe Billing
• Your database model: Organization → Users → Roles → Entitlements
• Auth0/Okta for authentication
• Internal admin portal for customer management

A few questions would narrow this down:

1. Are these your customers using your software, or are you reselling/managing third-party services for clients?
2. Roughly how many client accounts (10, 100, 1,000+)?
3. Do you bill by seat, usage, fixed subscription, or a mix?
4. Do clients need their own admins to manage users?

If you mean you operate multiple paid SaaS/client accounts and want your team to administer them centrally while clients retain isolated access, I’d shortlist these:

My recommendation

If you're looking for something ready-to-use: I'd start with Kartra Agency. It explicitly provides a centralized master console, one-click access to client accounts, and a unified billing profile. kartra.com

If you're managing marketing/ad platforms specifically: Plai is particularly interesting because its agency dashboard centralizes client workspaces, access, billing, integrations, and branding. www.plai.io

If this is infrastructure for your own product: I'd use Stripe Connect for the account/payment layer and an identity/authorization system on top. Stripe's current multi-entity architecture is explicitly designed around a platform account managing connected accounts, with each connected account maintaining its own customers, subscriptions, and catalog. docs.stripe.com

For more complicated usage-based billing, Lago is worth considering. It handles subscriptions, usage metering, invoicing, entitlements and RBAC, and can be self-hosted or cloud-hosted. getlago.com

One important distinction

There are really two architectures:

A. "Agency operating system"

Your company buys/manages 50 client subscriptions → employees log into one master dashboard → clients get restricted portals.

Look at Kartra / Plai / Nexynt.

B. "Billing + identity infrastructure"

You're building a platform where each customer/client is its own tenant, with different plans, permissions, invoices and payment relationships.

Look at Stripe Connect + an auth/RBAC layer, potentially Lago for sophisticated billing.

If you tell me what the paid accounts actually are (e.g. ChatGPT/OpenAI, Google Ads, SaaS subscriptions, social-media tools, etc.) and roughly how many client accounts you manage, I can narrow this down to 2–3 specific options and explain exactly how I'd structure the centralized billing/access setup.

If you mean you operate/manage multiple clients’ paid SaaS accounts and want your team to have one administrative layer for billing, permissions, and client isolation, I’d shortlist these:

My recommendation

1. Cloudmore — if you're essentially reselling/managing SaaS subscriptions

Cloudmore is the strongest choice if the accounts are things like Microsoft/cloud subscriptions or other services you're provisioning to clients. It provides centralized subscription lifecycle management, billing automation, customer self-service, and granular RBAC. It can also separate customers into organizations and give them controlled access to their own subscriptions and billing. kb.cloudmore.com

Cloudmore

2. Nexynt — if you're an agency managing different client organizations

This is particularly interesting if your main problem is "one employee needs access to Clients A, B and C, but each client must remain isolated." Nexynt explicitly supports multiple organizations under one account, independent roles/permissions, separate billing, and one-click switching between client organizations. nexynt.com

Nexynt

3. Gestmi — if you want the billing + client portal + operations layer together

Gestmi combines client accounts, billing/plans/invoices, permissions, projects, CRM and client-facing workspaces. It's more of an agency operating system than a pure billing/access-control product. gestmi.com

Gestmi

4. ManyRequests — good for productized services

If you're selling recurring services/packages to clients rather than simply administering third-party SaaS, ManyRequests is worth considering. It combines client portals, subscriptions/billing, requests, CRM and reporting, with unlimited clients on its Pro plan. www.manyrequests.com

ManyRequests

One important distinction

If by "multi-client paid accounts" you mean something like:

"We have 50 clients, each has their own ChatGPT/Google Ads/Meta/etc. account, and our employees need controlled access to all of them while the clients pay us centrally."

Then I wouldn't automatically choose an agency-management platform. The better architecture may be:

Central identity/SSO + password/credential management + billing platform + the vendors' native agency/manager accounts.

If you tell me what types of paid accounts you're managing (e.g. SaaS subscriptions, advertising accounts, AI accounts, Microsoft 365, cloud accounts, software licenses) and roughly how many clients/users, I can narrow this to 2–3 specific options and explain exactly how I'd structure the billing and permissions.

Yes. If you’re managing multiple clients under paid software accounts, I’d focus on tools that give you one admin layer across client workspaces, rather than ordinary project-management software.

My shortlist

ManyRequests is particularly interesting if your model is "we sell the same recurring service/software package to lots of clients." It combines subscriptions, Stripe billing, client portals, requests, and delivery rather than making you stitch those together. manyrequests.com

Plai is worth a serious look if you're effectively operating as a reseller/platform. Its agency-level client-management area is explicitly designed to let you control client workspaces, access, billing, integrations, and branding from one admin area. www.plai.io

AgencyHandy is a good middle ground if the client-facing portal matters heavily. It supports custom domains/branding, role-based visibility, and integrations including Stripe. www.agencyhandy.com

One important distinction

If by "paid accounts" you mean something like:

We purchase/manage 50 seats or subscriptions for different companies, and we need to decide who gets access to which account while having one place to charge them.

Then I wouldn't automatically choose an agency-management platform. I'd look at a billing + identity/access architecture instead.

For example:

Stripe Connect + an identity/SSO layer + your own admin console

Stripe Connect is specifically designed for platforms managing payments across multiple accounts, while Stripe's customer portal handles subscription, invoice, and payment-method self-service. stripe.com

That becomes much more powerful if you need things like:

• One master account with many client organizations
• Per-client admins
• Per-user roles
• Seat allocation/revocation
• Client-specific pricing
• Automatic provisioning/deprovisioning
• Centralized invoices
• Usage-based or recurring billing
• Audit logs
• SSO/SAML
• Client isolation
• Your own branding

My recommendation: if you tell me what type of paid accounts you're managing (e.g. Google Workspace, AI tools, SaaS subscriptions, ad platforms, software seats, etc.), number of clients/users, and whether you are rebilling clients at a markup, I can narrow this down to 2–3 platforms and tell you exactly which architecture I'd use.