idpcost.com
Memo
To: IT / Security buyer evaluating Auth0
From
idpcost.com
Re
Auth0 end-to-end cost analysis
Source
https://auth0.com/pricing

Auth0

live verifiedOkta · MAU-based with flat-rate floors. Per-user comparison requires assumptions about MAU per seat.

Auth0 doesn't price per-seat — it prices on monthly active users (MAU). B2B Essentials floor is $150/mo (≈$1,800/yr), Professional $800/mo (≈$9,600/yr). SAML SSO (enterprise connections) is available from Essentials — 3 connections included, Professional 5, with $100/mo per additional connection (max 30) — so SAML is not gated to the Enterprise tier. Avoid comparing Auth0 head-to-head on per-user pricing; the comparison only works if you model your MAU and connection count.

1.Year-1 TCO breakdown

Representative buyer: 200 employees, 30 SaaS apps, full SAML + MFA + lifecycle automation, 90-day audit retention.

Licensing (200 seats)MAU-based, not seat-based. SAML SSO is available from B2B Essentials, so a SAML deployment doesn't require Enterprise. 10,000 MAU on Essentials = $2,100/mo (≈$25,200/yr); Professional = $2,400/mo (≈$28,800/yr). Enterprise is quote-only.
SAML taxModest. SAML SSO (enterprise connections) is included from B2B Essentials — 3 connections, Professional 5 — with $100/mo per additional connection (max 30). The Free tier has no enterprise connections. The cost driver is connection count and MAU volume, not a tier gate.
Audit retentionLog retention is shorter on lower tiers; long-term retention requires an Enterprise or add-on plan.
MFAIncluded in paid tiers; advanced MFA features scale with tier.
Year-1 TCOHighly variable with MAU. ~$25K/yr for 10K MAU on Essentials; scales with active users and SAML connection count, not seats.

2.The hidden cost category for this IdP

Hidden cost

**MAU-based pricing is the structural surprise.** Auth0 charges per monthly active user, not per registered user or per seat. For B2C apps with seasonal traffic (e.g. retail spikes around holidays), MAU surges drive cost spikes. Auth0's pricing page shows base tier prices but the elastic MAU-based scaling means actual bills are often 2-3x the listed figures during traffic spikes. Okta acquired Auth0 in 2021 (~$6.5B all-stock); pricing strategy is now SaaS-style elastic billing.

3.Migration cost out of Auth0

Migration off Auth0 is genuinely complex because Auth0's strength is custom JavaScript Rules / Actions that run during authentication — these don't port to Okta or Entra. Migration cost runs $100K-$400K depending on Rules complexity. For B2C deployments with custom user flows, migration is often deferred indefinitely.

4.The negotiation lever

Annual MAU commit. Auth0 sales offers steep discounts for annual MAU commits — 20-40% off list — but locks in the commit even if actual MAU is lower. The lever: negotiate a true-up clause that adjusts the commit downward at renewal if MAU was below committed level. Don't sign the commit at peak-traffic MAU; sign at projected average.

5.Vendor tier reference

TierPer-user (USD/mo)Features
Free$0Up to 25,000 MAU — community support only
Essentials (B2B)Quote$150/mo floor (500 MAU); 3 enterprise/SAML connections included
Professional (B2B)Quote$800/mo floor (1,000 MAU); 5 enterprise/SAML connections included
EnterpriseQuoteQuote-only — SLA, multi-region, advanced compliance

Source: https://auth0.com/pricing · Verified 2026-06-25 · For vendor-published comparison view: idppricing.com/idp/auth0/

Other IdPs: Okta Workforce Identity · Microsoft Entra ID · JumpCloud · OneLogin · Ping Identity · Duo (Cisco) · Authentik