Milea is an independent app. It is not a government service and is not affiliated with, endorsed by, or acting on behalf of any government or tax authority.
The VAT rates, mileage rates and record-keeping periods Milea suggests for each country come from the official government sources below. Check the source yourself, because rates change, and confirm anything filing-related with a licensed accountant in your country. Milea is not a substitute for professional tax advice.
You can also find this list in the app under Settings → Official sources.