Do I need SSO if my customers are small businesses?

Not necessarily.

If your customers are mostly small businesses, you usually don’t need SSO on day one unless:

• they already use tools like Google Workspace, Microsoft 365, Okta, or Azure AD and ask for it,
• they have security/compliance requirements,
• or your product is selling into companies with a more formal IT/admin process.

Typical reality for small businesses

Most small businesses are fine with:

• email/password login
• magic links
• Google/Microsoft social login
• MFA/2FA
• good team invitations and role management

That covers the majority of their needs without the complexity of SSO.

When SSO becomes worth it

Consider SSO if:

• customers start asking for it in sales calls,
• you’re moving upmarket into mid-market/enterprise,
• you need to shorten security reviews,
• or one customer’s contract size justifies the extra build/support work.

Important nuance

Even small businesses may want Google/Microsoft sign-in, but that’s not the same as SSO:

• Google/Microsoft login = simpler user convenience
• SSO with SAML/OIDC = organization-managed identity, usually for company-wide access control

Practical recommendation

For small-business SaaS, a common path is:

1. Start with email/password + MFA
2. Add Google/Microsoft login
3. Add SSO later if demand appears

If you want, I can also help you decide based on your product type, price point, and target customer profile.