We opened up our VAT compliance engine as an API — here's what's inside

Description and use

The vat.support API offers fast, accurate VAT checks for cross‑border sellers, eliminating SDKs and subscriptions.

Problem

Businesses selling across EU/UK borders struggle with VAT compliance, needing validation, rate lookup, reverse-charge checks, registration thresholds, and gap analysis.

Outcome

The API enables rapid, accurate VAT compliance checks for cross‑border sellers, reducing manual effort and eliminating subscription costs.

Workflow

• 1. Request an API key via POST /api/v1/keys (20 free calls).
• 2. Make authenticated requests to endpoints: /public/vat-number, /public/vat-rate, /public/reverse-charge, /public/registration-threshold, /public/gap-analysis.
• 3. Receive JSON responses with live data from VIES, HMRC, and internal logic.
• 4. Use responses to automate compliance checks in your e‑commerce or accounting workflows.
• 5. Monitor usage; free tier allows 60 requests/minute without a key, beyond that purchase prepaid credit packs.

Evidence

Five endpoints, each backed by live data rather than a static table: VAT number validation, VAT rate lookup, reverse‑charge eligibility, registration threshold verdicts, and a full 10‑question compliance gap analysis.

Source

No SDK, no dashboard tour, no subscription. POST /api/v1/keys gets you a working key with 20 free calls in one request.

Source