Self Assessment Test Support (MTD) API
| REST | |
| Version 1.0 - beta | |
| 20 April 2026 | |
| Sandbox base URL | https://test-api.service.hmrc.gov.uk |
| Production base URL | https://api.service.hmrc.gov.uk |
Overview
Use the Self-Assessment Test Support API to delete stateful test data supplied by developers in the sandbox environment.
For information on how to connect to this API see the Income Tax MTD end-to-end service guide.
Errors
Errors returned by this API are listed in the Response section of each endpoint. Read the reference guide for more information about errors.
Testing
Not applicable to this API.
Versioning
When backwards-incompatible changes are made to this API, we release a new version. Read the reference guide for more information about API versioning. For updates about all our APIs, refer to the API changelog.
Endpoints
| Version | Environments | Endpoints |
|---|---|---|
|
Version 1.0 - beta
(opens in new tab) |
Sandbox | 1.0 endpoints |