Editorial method
Useful enough to act.
Bounded enough to trust.
Last reviewed 2026-08-03
What we publish
Each country begins with a concrete property-owner question: whether a filing may be required, which official form structures the route, how to find the live deadline and what evidence supports the expense file. We prefer five complete country hubs to hundreds of thin country pairs.
Source hierarchy
Tax-authority guidance, official forms and government instructions come first. Every country page displays the sources used and the review date. A product page is never used as authority for its own fiscal claim.
What we refuse to infer
The atlas does not decide treaty residence, calculate a global liability, promise a filing outcome or personalise advice. Entity ownership, sales, inheritance, mixed use and disputed residence are explicit hard stops.
Product routing
Where an Usine product handles a bounded next step, the link is contextual, branded and scoped. The country page remains useful without clicking it. Unsupported situations stay on the official or professional route.
Current evidence set