SAML, OIDC and SCIM Enterprise Readiness for a SaaS: 2026 Cost

The verdict in three sentences

For a SaaS vendor moving upmarket, SAML or OIDC single sign-on and SCIM provisioning are no longer nice to have: they appear in roughly 8 out of 10 enterprise security questionnaires. Building both in-house costs around 14,500 to 35,000 USD and takes 4 to 8 weeks, while a managed identity service charges 1 to 3 USD per user per month. The right call depends mainly on your expected end-user count in five years and how many identity providers you must support.

What enterprise IT teams actually require

When a Fortune 1000 company, a regional bank or a hospital network rolls out a SaaS product, IT wants staff to sign in with their corporate account, MFA enforced by its own policy and leavers cut off the same day. In practice the vendor assessment almost always lists:

• SAML 2.0 SSO for Entra ID (formerly Azure AD), Okta, Ping or ADFS.
• OIDC for Google Workspace and newer providers.
• MFA enforced at the identity provider, or in the app as a fallback.
• SCIM 2.0 to create, update, suspend and delete accounts automatically.
• Group mapping to application roles.
• Exportable audit logs, retained for at least 12 months.

Without SCIM, every leaver means an admin disabling the account by hand. For an IT team managing 20,000 employees, orphaned accounts are a risk they no longer accept, and SOC 2 or ISO 27001 auditors will flag it.

2026 costs: build in-house or buy an identity service

The figures below are 2026 ballpark rates for agencies and senior contractors in North America and Western Europe, for a B2B SaaS already in production with an existing user base and role model.

The essential core (SAML, OIDC, SCIM) therefore lands at 14,500 to 35,000 USD and 4 to 8 weeks, depending on how clean your current account model is.

Build in-house vs managed identity service

The tipping point is simple: at 2 USD per user per month, 1,500 end users cost 36,000 USD a year, more than the full build. Under 500 users, the managed service almost always wins.

Pitfalls to avoid

Three mistakes come up again and again in projects we take over. The first is keying identity on email: when someone changes their name or domain, the account duplicates. Store the immutable subject identifier returned by the provider. The second is ignoring SCIM suspension: Entra ID sends a PATCH with active=false rather than a DELETE, and many implementations miss it. The third concerns sessions: deprovisioning via SCIM is pointless if the session token stays valid for 30 days. Aim for 8 to 12 hour sessions on SSO accounts, with immediate revocation.

Mini case study

Rachel, CTO of an HR software vendor in Austin, loses two enterprise deals per quarter for lack of SSO. Her three current prospects represent 4,200 users at an average of 7 USD per user per month.

• Annual revenue at stake: 4,200 × 7 × 12 = 352,800 USD.
• Managed identity at 1.50 USD per user: 4,200 × 1.50 × 12 = 75,600 USD a year, about 21 % of that revenue.
• In-house build: SAML 10,000, OIDC 5,500, SCIM 10,000, audit logs 4,500, total 30,000 USD, plus 4,000 USD of annual maintenance.

Over three years the managed service costs 226,800 USD against 42,000 USD for the build. Rachel builds, ships in 7 weeks and cuts the security questionnaire turnaround from 3 weeks to 4 days.

FAQ

SAML or OIDC, which should we build first?

Start with SAML 2.0: around 70 % of large enterprises run Entra ID, Okta or ADFS and ask for it first. OIDC follows in 1 to 2 weeks for Google Workspace tenants.

Is SCIM really mandatory?

For accounts above 1,000 employees, yes in most vendor assessments. Without it, deprovisioning leavers stays manual and can take 5 to 10 days.

Should we charge customers for SSO?

Many vendors gate it behind an Enterprise plan with a 20 to 40 % uplift. Security teams increasingly push back on this so-called SSO tax, and some procurement teams now score it negatively.

Where should identity data be hosted?

Public sector and healthcare buyers often require in-region hosting, for example the EU or Canada. Check where managed identity services process data, since many default to US regions.

How long does an enterprise security review take?

With SSO, SCIM, MFA and audit logs documented, expect 3 to 5 business days. Without them, the back and forth often runs 3 to 6 weeks and ends in a no.

For what comes next in the user journey, read our piece on internal tool usability testing and our guide to taking over an orphaned web app. We also support vendors on application security.

Let's scope your project. Share your stack, target identity providers and user volume: we will price SAML, OIDC and SCIM with delivery in 4 to 8 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.