VATComply Rates API

Free exchange rate API with no key, built on European Central Bank data, plus IP-based country detection and VAT number validation. Tested curl example.

No API key requiredHTTPSFree tier

Endpoint tested and returned HTTP 200 on 20 Aug 2026

What is the VATComply Rates API?

VATComply provides a free, key-free API offering foreign exchange rates sourced from the European Central Bank, alongside IP-based country detection and EU VAT number validation.

VATComply bundles three things an EU e-commerce checkout typically needs: exchange rates for price display, IP geolocation to guess the customer's country, and VAT number validation for B2B zero-rating.

The rates come from ECB reference data, which means they update once per working day and are the figures acceptable for accounting purposes — the same provenance as Frankfurter, with the VAT tooling added alongside.

Quick facts

Base URL: https://api.vatcomply.com
Authentication: No API key required.
Rate limit: No published hard limit; fair use expected.
Pricing: Free.
CORS: Not enabled — call it from your server
Official docs: Read the docs

How to use the VATComply Rates API

Every request below was executed against the live API on 20 Aug 2026, and the response shown is the real body it returned — not an illustration.

1. Fetch exchange rates

GET https://api.vatcomply.com/rates?base=USD

curl

curl 'https://api.vatcomply.com/rates?base=USD'

JavaScript (fetch)

const res = await fetch("https://api.vatcomply.com/rates?base=USD");
if (!res.ok) throw new Error(`Request failed: ${res.status}`);
const data = await res.json();
console.log(data);

Python (requests)

import requests

res = requests.get("https://api.vatcomply.com/rates?base=USD", timeout=20)
res.raise_for_status()
print(res.json())

Response — HTTP 200

{
  "date": "2026-08-19",
  "base": "USD",
  "rates": {
    "EUR": 0.861698,
    "USD": 1.0,
    "JPY": 159.086601,
    "CZK": 20.821198,
    "DKK": 6.441965,
    "GBP": 0.737682,
    "HUF": 314.157691,
    "PLN": 3.726411,
    "RON": 4.52081,
    "SEK": 9.511848,
    "CHF": 0.810168,
    "ISK": 122.533391,
    "NOK": 9.401551,
    "TRY": 47.934597,
    "AUD": 1.41327,
    "BRL": 5.204136,
    "CAD": 1.387161,
    "CNY": 6.738216,
    "HKD": 7.84162,
    "IDR": 17832.098234,
    "ILS": 2.987161,
    "INR": 95.757432,
    "KRW": 1391.477811,
    "MXN": 17.036536,
    "MYR": 4.057475,
    "NZD": 1.700819,
    "PHP": 61.820767,
    "SGD": 1.276174,
    "THB": 33.065058,
    "ZAR": 16.244291
  }
}

Parameters

Parameter	Type	Required	Description
`rates`	path	Optional	Exchange rates endpoint. `rates`
`base`	string	Optional	Base currency. Defaults to EUR. `USD`
`date`	string	Optional	Historical date as YYYY-MM-DD. `2026-01-15`
`vat`	path	Optional	VAT number validation. `vat?vat_number=IE6388047V`
`geolocate`	path	Optional	Country detection from the caller's IP. `geolocate`

Response fields

datestring: Date the rates were published.
basestring: Base currency.
ratesobject: Currency code to rate mapping.
(vat) validboolean: Whether the VAT number is registered.
(vat) name / addressstring: Registered business details, where disclosed.
(geolocate) country_codestring: Detected country from IP.

What you can build with the VATComply Rates API

Display prices in a customer's local currency at checkout
Validate EU VAT numbers for B2B zero-rating
Detect a customer's country to preselect currency and tax treatment
Record accounting-grade exchange rates on invoices

Common errors and how to fix them

Rates unchanged over a weekend

ECB publishes on working days only.

Fix: Read the `date` field rather than assuming it matches your request.

VAT validation unavailable

It proxies VIES, which member states take offline for maintenance.

Fix: Distinguish unavailable from invalid — do not reject a customer on a service outage.

Wrong country from geolocate

IP geolocation is approximate.

Fix: Use it to preselect, never to enforce; let the customer correct it.

VATComply Rates API — frequently asked questions

Is VATComply free?

Yes, free with no API key for exchange rates, VAT validation and IP geolocation.

Where do the exchange rates come from?

European Central Bank reference rates, which update once per working day and are the figures generally acceptable for accounting purposes.

How does its VAT validation compare with VIES directly?

It proxies VIES, so the underlying answer is the same. Using VIES directly gives you the official response; VATComply is convenient when you want rates and validation from one API.

Why did the rates not change over the weekend?

ECB publishes on working days only, so weekend requests return Friday's rates. Always read the returned date.

Tools that pair with this API

JSON Formatter

Format, beautify and minify JSON online with 2-space, 4-space or tab indentation. Sort keys alphabetically and catch syntax errors instantly — free and private.

Percentage Calculator

Calculate what X% of a number is, what percent one number is of another, and percentage increase or decrease between two values — instantly and free.

Alternatives to VATComply Rates API

If VATComply Rates does not fit, these finance & crypto apis cover similar ground. Every one was called before publishing, and each links to its own reference page with a working curl command and the response it returned.

API	What it does	Auth	CORS	Last verified
CoinGecko	Free cryptocurrency price API covering 10,000+ coins. Live prices, market cap and volume in any currency, no API key on the public tier. Tested curl example.	No key	Yes	19 Aug 2026
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Coinbase Exchange Rates	Coinbase public exchange rates API with no key: convert any cryptocurrency to 100+ fiat currencies in a single request. Tested curl example and live JSON.	No key	Yes	19 Aug 2026
Frankfurter	Free currency exchange rate API with no key, built on European Central Bank data. Latest and historical rates, time series and conversion. Tested curl example.	No key	Yes	19 Aug 2026
Vietcombank Exchange Rates	Free Vietcombank exchange rate feed with no key: buy, transfer and sell VND rates for every quoted currency as XML, refreshed through the trading day. Tested example.	No key	No	21 Aug 2026
World Bank Open Data	Free World Bank API with no key: GDP, population, inflation and 16,000+ development indicators for every country, going back decades. Tested curl example.	No key	Yes	19 Aug 2026

All Finance & Crypto APIs

VATComply Rates is an independent third-party service and is not affiliated with ByteTools or ByteVancer. Details on this page were verified on 20 Aug 2026; always check the official documentation before relying on this API in production, as terms and limits can change.