Getting Started

Welcome to the GoodVat Developer Documentation. GoodVat is tax compliance software for online businesses: it tracks your US nexus and VAT and GST thresholds, calculates sales tax, VAT and GST on every sale, sends compliant invoices and prepares your returns in 140+ countries.

The GoodVat API is how custom checkouts, billing systems and platforms connect to GoodVat. This guide covers getting access and authenticating your requests.

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Quickstart

1. Get set up

   Global Tax Compliance is set up with you by our team. Get in touch and we’ll configure your account.

2. Create an API key

   Go to the API Keys page in your dashboard, click Create API Key, and copy your secret key (gv_live_...). It’s shown once.

3. Authenticate your requests

   Send the key as a Bearer token in the Authorization header of every request, from your backend only:

   Authorization: Bearer YOUR_SECRET_API_KEY

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Next steps

• Authentication: key format, headers, permissions and rotation.
• AI tax assistant: connect ChatGPT, Claude or Cursor to GoodVat over MCP.