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Adds support for third-party tax on flexible billing mode subscriptions

What’s new

Allows you to use third-party tax apps to calculate tax for subscriptions configured with flexible billing mode.

Impact

Creating and updating flexible billing mode subscriptions completes successfully and no longer returns a 400 error code while using a third-party tax app.

Upgrade

  1. View your current API version in Workbench.
  2. If you use an SDK, upgrade to the corresponding SDK version for this API version.
    • If you don’t use an SDK, update your API requests to include Stripe-Version: 2025-08-27.basil
  3. Upgrade the API version used for webhook endpoints.
  4. Test your integration against the new version.
  5. If you use Connect, test your Connect integration.
  6. In Workbench, perform the upgrade. You can roll back the version for 72 hours.

Learn more about Stripe API upgrades.

Related changes

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