# Firebase Authentication pricing (2026): plans, cost, and compliance

**Entry price:** $0 (free)/mo (Spark (No-Cost)). Among the 8 auth identity we track it is the cheapest; median entry $0/mo.
**Domain:** firebase.google.com
**Free tier:** Yes
**Compliance:** HIPAA No · SOC 2 Yes · GDPR Yes
**Integrations:** Google Cloud Identity Platform, Apple Sign-In, Facebook Login, GitHub OAuth, Microsoft / Azure AD, Twitter OAuth, Google Play / Android, Firebase Hosting
**Best for:** Google Cloud / Firebase-native stacks; Consumer apps needing generous free auth tier (50K MAUs); Teams that can migrate auth to Google Cloud Identity Platform for HIPAA-covered PHI workloads

## Plans

| Plan | Monthly | Annual | Billing | Notes | Source |
| --- | --- | --- | --- | --- | --- |
| Spark (No-Cost) | $0 | — | flat | Free forever. Up to 50,000 MAUs for standard auth; up to 50 MAUs for SAML/OIDC. No phone authentication available on Spark plan. Cannot exceed limits — upgrade to Blaze required. | firebase.google.com |
| Blaze (Pay-as-You-Go) | Quote-only | — | custom | No flat monthly fee for auth. First 50K MAUs free (matching Spark). Overage MAUs billed at Google Cloud Identity Platform rates. SAML/OIDC: 50 MAUs free then metered via Google Cloud. Phone auth billed per SMS sent at Google Cloud rates. No published flat rate — all usage is metered. | firebase.google.com |

**Key features:** Email/password, passwordless, social, phone, anonymous, and federated (SAML/OIDC) auth in one SDK; Deep integration with all Google Cloud and Firebase services; Firebase Emulator Suite for local auth testing; Managed identity infrastructure on Google's global network; Custom token minting for integration with custom auth systems.

**Plan limits:** Spark: 50,000 MAUs standard auth; 50 MAUs SAML/OIDC; no phone auth; Blaze: first 50K MAUs free; metered above that; phone auth billed per SMS; SAML/OIDC on Blaze: 50 MAUs free, then metered via Google Cloud Identity Platform.

Sources: 1 · Last verified 2026-06-14
Provenance: https://firebase.google.com/pricing accessed 2026-06-14. Firebase Auth is part of Firebase platform. Spark plan is fully free up to 50K MAUs. Blaze (pay-as-you-go) charges only above 50K MAUs at Google Cloud Identity Platform metered rates. HIPAA eligibility not listed on Firebase pricing page; Firebase BAA is available through Google Cloud but not confirmed on this page. No flat monthly tier exists for auth specifically.
Canonical: https://frontdeskreview.com/software/auth-identity/firebase-auth/
Cite: Per The Front Desk Review, Firebase Authentication's entry plan was $0 (free)/mo as of 2026-06-14 — https://frontdeskreview.com/software/auth-identity/firebase-auth/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl