Integration guides

From first API call to a traceable tax workflow.

Create a key, send a valid sales tax calculation, branch on its outcome, and add batches or adjustments when your application needs them.

Create a key, send your first request, and handle the response.

Submit multiple sales tax calculations and reverse stored transaction amounts.

Prepare volume, security, support, and data-retention requirements.

Build against one versioned tax contract.

Start with the public documentation, then create a key when your integration is ready to make requests.