VAT Rates & Checks
Rates as published in the European Commission's VAT rates list and on GOV.UK (dated in every response). Validation checks the format and check digits only — it does not query VIES or HMRC, so it cannot confirm a number is registered.
- cost
- Free every endpoint, within the daily allowance
- after that
- from $0.001 / call · card or USDC
- endpoints
- 3
No signup needed over MCP: 50 free calls a day, or 500 with a free key.
Add or remove VAT Free
Net to gross or gross to net at a given rate, or at a country's standard rate.
- cost
- Free then $0.001 / call
- MCP tool
- vat__calculate
- method
- GET
Free up to 50 calls a day over MCP (500 with a free key), then $0.001 per call by card credit or USDC. Free key · Pay by card
GET https://fourzerotwo.si/v1/vat/calculate
| Param | Type | Description |
|---|---|---|
| amount | string | Amount |
| rate? | string | VAT rate in percent (or give country) |
| country? | string | Use this country's standard rate |
| from? | string | net (default) or gross |
# free: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/vat/calculate?amount=100" # no key: returns 402 with the price, for x402 agents curl -i "https://fourzerotwo.si/v1/vat/calculate?amount=100"
by fourzerotwo
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VAT rates Free
Standard, reduced and super-reduced VAT rates for one country or all of EU27 + UK, with the date they were checked.
- cost
- Free then $0.001 / call
- MCP tool
- vat__rates
- method
- GET
Free up to 50 calls a day over MCP (500 with a free key), then $0.001 per call by card credit or USDC. Free key · Pay by card
GET https://fourzerotwo.si/v1/vat/rates
| Param | Type | Description |
|---|---|---|
| country? | string | ISO code (omit for all) |
# free: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/vat/rates" # no key: returns 402 with the price, for x402 agents curl -i "https://fourzerotwo.si/v1/vat/rates"
by fourzerotwo
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Validate a VAT number format Free
Country format and check digit for UK (GB/XI) and EU VAT numbers. Does not confirm registration.
- cost
- Free then $0.001 / call
- MCP tool
- vat__validate-format
- method
- GET
Free up to 50 calls a day over MCP (500 with a free key), then $0.001 per call by card credit or USDC. Free key · Pay by card
GET https://fourzerotwo.si/v1/vat/validate-format
| Param | Type | Description |
|---|---|---|
| vat_number | string | VAT number with country prefix |
# free: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/vat/validate-format?vat_number=GB980780684" # no key: returns 402 with the price, for x402 agents curl -i "https://fourzerotwo.si/v1/vat/validate-format?vat_number=GB980780684"
by fourzerotwo
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EU rates: European Commission, VAT rates applied in the Member States (reuse with acknowledgement). UK rates: GOV.UK (OGL v3.0).