Redesigned Filings API

Today we’re releasing the redesigned Filings API. The Filings API gives partners the ability to see what tax returns Check plans to file for a company in upcoming filing periods, as well as what tax returns Check has filed for a company in past filing periods. Information like status, status history, blocking reasons, amendments, and related documents will all be queryable through the Filings API. Using this API, partners will be able to communicate to customers with confidence what the status of their past and upcoming filings are.

As a reminder, the deprecated Tax Filings API will continue to be available in Check’s API through December 31, 2025 but will cease to have up-to-date data beginning in the Q3 filing period in October. If you’d like guidance on how to migrate between APIs, review this guide.