IRIS VAT Filer vs VATlayer

IRIS VAT Filer has no write-up on Specifiction yet; its figures are above.

VATlayer is a REST-based JSON API for checking EU VAT numbers, finding VAT rates, and calculating VAT-compliant prices. Its validation endpoint can return company information for a VAT number. The rate endpoint identifies a country from a two-letter code, a supplied IP address, or the client IP address. Price calculations can also work backward from an amount that already includes VAT. VAT information covers 28 EU member states and draws on multiple data sources, including European Commission databases. Results are provided in real time, with an average response time around 0.50 seconds. The API reports uptime around 99.9%, though public uptime statistics are not offered. The Free plan allows 100 requests per month for non-commercial use with limited functionality. Paid plans start at $9.99/mo and include commercial use. Usage notices arrive by email and dashboard at 75%, 90%, and 100% of the monthly allowance; overage fees apply after it is reached. Paid customers can access the API using 256-bit HTTPS encryption.