Firebase Auth / Identity Platform
Billing unit: MAU — Firebase Authentication with Identity Platform bills Google Cloud Identity Platform rates: Tier 1 (email, phone, anonymous, social) per MAU in volume bands; Tier 2 (SAML/OIDC) per federated MAU; phone/MFA per SMS sent. firebase.google.com/pricing lists no cost up to 50K MAUs and 50 SAML/OIDC MAUs, then Google Cloud pricing. Source: cloud.google.com/identity-platform/pricing, checked 2026-10-31. Visit Firebase Auth / Identity Platform
10k users: $0/mo on Pay as you go · 50k users: $0/mo on Pay as you go · 100k users: $275/mo on Pay as you go.
- 1k users · no SSO: Pay as you go lists $0/mo: tie at $0 with 10 other plans.
- 10k users · 1 SSO: Pay as you go at $2.25/mo ranks #4 (tied) of 19, $27/yr more than Auth0 Free (assumes 200 SSO users per connection; at 1,000 per connection $14.25/mo, #4 of 19; at 2,000 per connection $29.25/mo, #6 of 19).
- 50k users · 5 SSO: Pay as you go at $14.25/mo is the cheapest of 13 (assumes 200 SSO users per connection; at 1,000 per connection $74.25/mo, #1 of 13; at 2,000 per connection $149.25/mo, #1 of 13).
- 100k users · 10 SSO: Pay as you go at $304.25/mo ranks #2 of 13, $3,000/yr more than Supabase Auth Pro (platform) (assumes 200 SSO users per connection; at 1,000 per connection $424.25/mo, #2 of 13; at 2,000 per connection $574.25/mo, #3 of 13).
As of 2026-10-31, from 25 verified plan rows. SSO users: Amazon Cognito, Supabase Auth and Firebase Auth / Identity Platform bill SAML/OIDC per SSO user, not per connection (first 50 free, then $0.015 per SSO user a month). Their SSO results here assume 200 SSO users per connection (5 connections = 1,000 SSO users). See how 1,000 or 2,000 per connection changes the result or set your own. How we calculate this.
No cost up to 50k MAU (email, phone, anonymous, social), then $0.0055/MAU to 100k, $0.0046 to 1M, $0.0032 to 10M, $0.0025 above. SAML/OIDC: 50 MAU free then $0.015/MAU. SMS (phone sign-in and MFA) billed per message by region (US $0.01); first 10 SMS a day not billed. Sources: cloud.google.com/identity-platform/pricing and firebase.google.com/pricing.
Firebase Auth / Identity Platform cost at 10k, 50k and 100k users
| Plan | 10k users | 50k users | 100k users |
|---|---|---|---|
| Pay as you go | $0 | $0 | $275 |
Monthly USD, no SSO, list price. “—” = the vendor publishes no fixed self-serve price for that volume (custom / contact sales) or the plan caps below it.
More on Firebase Auth / Identity Platform: Firebase Auth / Identity Platform pricing · cheaper Firebase Auth / Identity Platform alternatives · self-hosting Better Auth / Auth.js instead · vs Clerk · vs Auth0 · vs Amazon Cognito · vs WorkOS · vs Stytch · vs Kinde · vs Supabase Auth · vs Logto · vs Descope
| Plan | Base | Included | Unit | Overage | SSO | Status | Notes |
|---|---|---|---|---|---|---|---|
| Pay as you go | $0 | 50000 | MAU | $0.0055 | — | Verified | Tier 1 (email, phone, anonymous, social): 0–50k MAU free, then $0.0055 (50k–100k), $0.0046 (100k–1M), $0.0032 (1M–10M), $0.0025 (10M+). Tier 2 SAML/OIDC: 50 MAU free then $0.015/MAU. Phone auth and SMS MFA billed per SMS sent by region (US $0.01, first 10/day not billed). Firebase pricing page: no cost up to 50K MAUs with Identity Platform, then Google Cloud pricing. |
Get alerted if Firebase Auth / Identity Platform changes prices
Weekly: every auth price change we confirmed, SSO fee moves, and the cheapest verified plan for 10k and 50k users. Free; unsubscribe in one click. Sent via Kit · Privacy.