Every rule comes from the tax office that sets it

Papertern only builds a rule into a maker after reading it on the official page that sets it. Each guide lists those pages and the date we last checked them.

The process

1. We read the tax office's own guidance and, where it exists, the regulation behind it.
2. A second check re-reads each contested point from the source before it goes into a maker.
3. Anything we cannot confirm on an official page is listed as "not yet confirmed" in the guide, and the maker does not rely on it.
4. We re-check each country when its tax year changes and when the tax office announces a change.

Last checked

Why it is free

Papertern is paid for by advertising on the guide pages and around the tool. Ads never appear inside the form or next to the download button, and nothing you type is used to target them.

Corrections

If you think a rule is wrong or out of date, email hello@papertern.com with the country and the rule. We check it against the tax office's page, fix it if needed, and update the "checked" date on the guide.

Contact

Write to hello@papertern.com with questions or corrections.