Guides
Using VAT numbers in your product
Practical pages about what a VAT number is good for once you have one, and about what gets in the way. Written from what we ran into building Vatlas, limits included.
Autofill a company form from a VAT number
One field instead of six. What autofill changes for a B2B sign-up, why no single method works across countries, and how to design a form that stays usable when no answer comes back.
Getting a company's name and address from a VAT number
What a VAT number tells you, why every country publishes that data differently (open data files here, a national API there, nothing at all somewhere else), and the three ways to reach the company behind a number.
Elsewhere on the site
Last updated 9 September 2026.