# Adds the ability to migrate subscriptions to flexible billing mode ## What’s new The new method on the [Subscription](https://docs.stripe.com/api/subscriptions.md?api-version=2025-05-28.preview) resource, `/v1/subscriptions/:subscription/migrate`, lets you migrate the [billing_mode](https://docs.stripe.com/api/subscriptions/create.md?api-version=2025-04-30.preview#create_subscription-billing_mode) for existing subscriptions from `classic` to `flexible`. You can use the billing mode to control the calculation and orchestration of prorations and invoices for subscriptions. You can also track the timestamp of your migration with the new `billing_mode_details.updated_at` field on the [Subscription](https://docs.stripe.com/api/subscriptions.md?api-version=2025-05-28.preview) object. ## Impact To migrate the `billing_mode` of your existing subscriptions, pass in `billing_mode: flexible` when you make the migrate request. Learn more about how the [billing mode enables flexible behavior](https://docs.stripe.com/billing/subscriptions/billing-mode.md) for subscriptions and the limitations. ## Changes #### REST API | Endpoint | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or endpoints | | ---------------------- | ------ | ------------------------------------------------------------------------ | | `billing_mode_details` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | #### Ruby | Method | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or methods | | ---------------------- | ------ | ------------------------------------------------------------------------ | | `billing_mode_details` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | #### Python | Method | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or methods | | ---------------------- | ------ | ------------------------------------------------------------------------ | | `billing_mode_details` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | #### PHP | Method | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or methods | | ---------------------- | ------ | ------------------------------------------------------------------------ | | `billing_mode_details` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | #### Java | Method | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or methods | | -------------------- | ------ | ------------------------------------------------------------------------ | | `billingModeDetails` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | #### Node.js | Method | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or methods | | ---------------------- | ------ | ------------------------------------------------------------------------ | | `billing_mode_details` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | #### Go | Method | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `Migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or methods | | -------------------- | ------ | ------------------------------------------------------------------------ | | `BillingModeDetails` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | #### .NET | Method | Change | Resource | | --------- | ------ | ------------------------------------------------------------------------ | | `Migrate` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | | Parameter | Change | Resources or methods | | -------------------- | ------ | ------------------------------------------------------------------------ | | `BillingModeDetails` | Added | [Subscription](/api/subscriptions/object?api-version=2025-05-28.preview) | ## Upgrade #### REST API 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. 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](https://docs.stripe.com/api/versioning.md) to include `Stripe-Version: 2025-05-28.preview` 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Ruby 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Ruby SDK to [v15.3.0-beta.1](https://github.com/stripe/stripe-ruby/releases/tag/v15.3.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Python 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Python SDK to [v12.3.0b1](https://github.com/stripe/stripe-python/releases/tag/v12.3.0b1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### PHP 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your PHP SDK to [v17.4.0-beta.2](https://github.com/stripe/stripe-php/releases/tag/v17.4.0-beta.2) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Java 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Java SDK to [v29.3.0-beta.1](https://github.com/stripe/stripe-java/releases/tag/v29.3.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Node.js 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Node SDK to [v18.3.0-beta.1](https://github.com/stripe/stripe-node/releases/tag/v18.3.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Go 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Go SDK to [v82.3.0-beta.1](https://github.com/stripe/stripe-go/releases/tag/v82.3.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### .NET 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your .NET SDK to [v48.3.0-beta.1](https://github.com/stripe/stripe-dotnet/releases/tag/v48.3.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). ## Related changes - [Adds more flexibility for how you manage subscription end-of-period cancellations](https://docs.stripe.com/changelog/basil/2025-05-28/cancel-at-enums.md)