If you are using Cognito Identity to create a User Pool, you pay based on your monthly active users (MAUs) only. A user is counted as a MAU if, within a calendar month, there is an identity operation related to that user, such as sign-up, sign-in, token refresh or password change. You are not charged for subsequent sessions or for inactive users within that calendar month.

There is separate pricing for users who sign in directly with their credentials from a User Pool and for users who sign in through an enterprise directory through SAML federation.

The Cognito Your User Pool feature has a free tier of 50,000 MAUs for users who sign in directly to Cognito User Pools and 50 MAUs for users federated through SAML 2.0 based identity providers. The free tier does not automatically expire at the end of your 12 month AWS Free Tier term, and it is available to both existing and new AWS customers indefinitely.

Users who sign in directly with their User Pool credentials or with social identity providers:

For users who sign in directly with their credentials from a User Pool or with social identity providers such as Google, Facebook and Amazon, there are volume-based pricing tiers for MAUs above the free tier, as shown in the table below.