Firebase Authentication / Google Identity Platform

Google's managed auth for Firebase and Google Cloud apps. 50,000 MAU free, then tiered per-MAU pricing; SAML/OIDC users billed per MAU.

Email, social and anonymous sign-in include 50,000 monthly active users free. Further users cost $0.0055 each, falling at higher volumes. Enterprise SSO has no connection fee, but SAML/OIDC users are billed separately at $0.015 each after the first 50. MFA, multi-tenancy and the SLA require Identity Platform. Standard plans do not pin auth data to a region.

Headquarters: 🇺🇸 United States
Parent jurisdiction: 🇺🇸 United States (parent: Alphabet)
EU self-serve plan: No / not documented
GDPR DPA: Yes
Billing: payg
Free tier: 50,000 MAU for email, social and anonymous sign-in; 50 MAU for SAML/OIDC.
Open source: No
Website: cloud.google.com
Source last checked: 2026-10-06
Pricing evidence: Published rates

Pricing

Calculated from the listed vendor rates; exclusions still apply. How to read these estimates.

Plan	Base fee / month	1k additional active users	1k SSO active users
Up to 100k MAU	$0	$5.5	$15
100k-1M MAU	$275	$4.6	$15
1M-10M MAU	$4,415	$3.2	$15
Over 10M MAU	$33,215	$2.5	$15

Allowances, plan limits & calculation details

Rates are shown at their recorded precision. A zero means no charge in this calculation; the vendor may charge for things we leave out. See the notes for usage assumptions and currency conversions.

Up to 100k MAU

Base fee / month: $0
Included monthly active users (thousands): 50
1k additional active users: $5.5
Included enterprise connections: 0
Enterprise connection / month: $0
1k SSO active users: $15
Modeled plan limits: ≤ 100 monthly active users (thousands)

100k-1M MAU

Base fee / month: $275
Included monthly active users (thousands): 100
1k additional active users: $4.6
Included enterprise connections: 0
Enterprise connection / month: $0
1k SSO active users: $15
Modeled plan limits: ≤ 1,000 monthly active users (thousands)

1M-10M MAU

Base fee / month: $4,415
Included monthly active users (thousands): 1,000
1k additional active users: $3.2
Included enterprise connections: 0
Enterprise connection / month: $0
1k SSO active users: $15
Modeled plan limits: ≤ 10,000 monthly active users (thousands)

Over 10M MAU

Base fee / month: $33,215
Included monthly active users (thousands): 10,000
1k additional active users: $2.5
Included enterprise connections: 0
Enterprise connection / month: $0
1k SSO active users: $15

Identity Platform tier 1 providers (email, phone sign-in, anonymous, social): first 50k MAU free, then $0.0055 (50k-100k), $0.0046 (100k-1M), $0.0032 (1M-10M) and $0.0025 per MAU above 10M. The bands are modelled as separate plans with lower bands folded into plan_month. Enterprise SSO has no per-connection fee, but users who sign in through SAML or OIDC are billed at $0.015/MAU after the first 50, which the calculator's per-connection SSO input cannot show. A B2B app with 20k SAML users would add about $300/month. Plain Firebase Authentication (no upgrade) also gives 50k MAU free. SMS is billed per message by country (e.g. $0.01 Canada, $0.07-0.08 several EU countries). MFA, blocking functions, multi-tenancy and the SLA require the Identity Platform upgrade. Auth data is not region-pinned on standard plans.

Managed alternatives

At 50K monthly active users, no enterprise SSO connections. Adjust usage and requirements.

Firebase Authentication / Google Identity Platform: $0/yr estimated.

No cheaper managed estimate matches your filters. Adjust your usage or compare with your actual contract bill.

The price difference leaves out migration costs, operating costs and any features you’d need to replace.

Self-hosted options

Operating cost is not estimated. These options are not counted as savings against managed services.

Other authentication comparisons

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