Tax Data vs VATComply
Same instrument, two spec sheets — measured, not claimed.
Tax Data vs VATComply: common questions
Which is more reliable, Tax Data or VATComply?
On our scheduled checks, VATComply leads on measured uptime — Tax Data at —% versus VATComply at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Tax Data and VATComply need an API key?
VATComply needs no key, while Tax Data requires a free API key. If you want to start calling without signup, reach for VATComply first.
Can I call Tax Data and VATComply from the browser?
Yes — both Tax Data and VATComply send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Tax Data and VATComply free for commercial use?
Tax Data has unclear commercial terms, and VATComply has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.