6 Auth Platforms With Enterprise SSO Support for B2B SaaS in 2026
Enterprise SSO is one of those features that can quietly stall a deal that seemed almost closed. Your product is solid, the champion is on board, and then someone from IT asks whether you support Enterprise Single Sign-On. If you don't have a good answer, the conversation usually ends there.
The challenge is that building Enterprise SSO from scratch is genuinely tedious. Supporting SAML 2.0 across Okta, Microsoft Entra ID, and Google Workspace sounds straightforward until you encounter the differences in how each identity provider implements the spec. Most product teams are better off reaching for a provider that abstracts that complexity away.
To help you find the right fit, we compared six auth platforms that offer Enterprise SSO support for B2B SaaS in 2026: WorkOS, PropelAuth, Frontegg, Descope, Clerk, and Kinde.
What Is Enterprise SSO?
Enterprise SSO (Single Sign-On) allows employees at your customer companies to log into your product through their existing identity provider (IdP), such as Okta, Microsoft Entra ID, or Google Workspace. Rather than creating and maintaining separate credentials for your app, users authenticate once through their company's IdP and get access automatically.
For B2B SaaS teams, this matters for two reasons. First, enterprise IT teams often require it as a condition of procurement. If your app cannot connect to their IdP, it may not pass the security review. Second, Enterprise SSO works alongside SCIM provisioning to simplify user lifecycle management for your customers: when an employee joins, their account is provisioned automatically; when they leave, access is cut off at the IdP level.
The two main protocols are SAML 2.0 and OIDC. SAML is the standard for enterprise customers running Okta or Entra ID. OIDC is more common in modern developer tooling. Most B2B teams selling upmarket will eventually need both.
Frontegg
Frontegg packages Enterprise SSO with SAML and OIDC alongside SCIM provisioning, RBAC, and a self-service admin portal in a single B2B SaaS platform. The admin portal lets customer IT teams configure their own SSO connections through a dedicated interface, which can reduce some of the back-and-forth during enterprise onboarding.
There are a few things to understand before choosing Frontegg. Enterprise SSO is gated behind higher-tier plans, so the cost structure is worth reviewing early. The platform is also fairly opinionated about how identity flows are structured, with logic closely tied to Frontegg's provided UI components. Teams building API-first products or working with non-standard authorization models may find that constraint limiting. It fits best when you want a packaged B2B auth platform and can work within its assumptions.
PropelAuth
PropelAuth is the only provider on this list built exclusively for B2B products, and that focus runs throughout. Enterprise SSO with SAML and OIDC is integrated directly into the organizational model rather than added on top of a general-purpose platform, so SSO connections are scoped to individual customer organizations from the start. Your customers can configure their own connections through self-service setup, and every other part of the platform, including organizations, roles, invitations, and user management, reflects the same assumption that your customers are companies with IT teams and real access control requirements.
The feature that sets PropelAuth apart from everything else on this list is the Bring Your Own Auth (BYO) option. PropelAuth BYO is a self-hosted sidecar written in Rust that lets you add Enterprise SSO to your product without replacing your existing authentication stack. You deploy it in your own cloud, keep full ownership of your user data, and adopt only the features you need. For teams that have already built auth and need to close the Enterprise SSO gap to unblock enterprise deals, this is a far more practical path than a full platform migration. SCIM provisioning is also available, included on the Growth Plus plan. All paid plans include unlimited SSO connections with no per-connection fees, which keeps costs predictable as your enterprise customer list grows.
WorkOS
WorkOS is a recognized name in the Enterprise SSO space, with API-focused tooling that targets developer teams. It supports both SAML and OIDC, as well as SCIM provisioning via its Directory Sync product. The platform expanded in 2023 with AuthKit, a user management layer that makes it a more complete option than it used to be.
The main thing to evaluate is pricing. Enterprise SSO and SCIM connections are both billed per active connection per month, starting at $125 for the first connection with volume discounts as you scale. That model works if your enterprise deals are large enough to absorb it, but it adds up quickly for teams with many smaller customers. It is worth modeling your expected connection count before committing.
Descope
Descope approaches authentication through a visual, low-code interface. Enterprise SSO with SAML and OIDC is supported as part of a broader platform covering authentication, authorization, and tenant management, and SCIM provisioning is included. Teams that prefer configuring auth flows through a drag-and-drop builder rather than writing them from scratch will find the approach different from the other options on this list.
Enterprise SSO is gated to higher plans, which puts it out of reach for earlier-stage teams. The starting cost is something to factor in before evaluating further.
Clerk
Clerk is known for its pre-built UI components, particularly in React and Next.js environments. A pricing restructure in February 2026 consolidated most previously separate add-ons into the Pro plan. Enterprise SSO with SAML and OIDC is available on the Pro plan.
The organizational model is worth examining carefully for B2B use cases. Clerk was designed around individual user sessions, and while it supports organizations and multi-tenancy, teams building scenarios with per-organization Enterprise SSO policies, custom role hierarchies, or strict tenant-scoped authorization may find themselves working around the platform's defaults rather than with them. Enterprise SSO connections are metered at $75 each on the Pro plan, which is a cost to model if you expect a large number of enterprise customers. SCIM provisioning is not yet available; it is on Clerk's public roadmap but has not shipped as of 2026.
Kinde
Kinde bundles authentication, organization management, RBAC, feature flags, and billing into one platform. Enterprise SSO with SAML and OIDC is included on paid plans without per-connection fees, and the free tier covers up to 10,500 monthly active users with unlimited organizations. SCIM provisioning is not yet available; it is listed as coming soon.
The tradeoff is depth versus breadth. Covering a wide surface area in a single platform reduces the number of vendors to manage, but teams with specific Enterprise SSO requirements or complex authorization models may find the configurability limited. It is a reasonable option for teams at an earlier stage that want Enterprise SSO included alongside the rest of their auth infrastructure.
Which Enterprise SSO Provider Should You Choose?
The right choice comes down to where you are in your product and what your enterprise customers actually need.
For most B2B SaaS teams, PropelAuth is the strongest starting point. No other provider on this list was built specifically for B2B from the ground up, and that matters more than it sounds. Enterprise SSO is not just a protocol integration in PropelAuth. It is a first-class feature of how organizations, users, and access are modeled throughout the platform. The BYO sidecar option is uniquely useful for teams that already have authentication in place and need to add Enterprise SSO without disrupting what is already working. And with no per-connection pricing, costs stay predictable as you sign more enterprise customers.
WorkOS is an option for teams building enterprise-first from the start who are comfortable with per-connection pricing. Frontegg suits teams that want a packaged B2B platform and can work within its UI opinions. Descope is an option if low-code auth configuration fits your team's workflow, and the pricing tier is not a barrier. Clerk fits React-focused teams where UI components are a priority and organizational complexity is low. Kinde is an option for teams that want Enterprise SSO included alongside the rest of their auth stack without per-connection fees.
If your immediate goal is to unblock enterprise deals and you want a platform that was built around B2B customers from the start, PropelAuth is where to begin.
