Which countries do you cover?

We publish three different things, and they are not the same. A treaty desk (Switzerland (1996), Denmark (1999), Italy (1999), Germany (1989), United Kingdom (2001), France (1994), Canada (1980), Australia (1982)) lists the convention articles relevant to expats — dividends, interest, pensions, capital gains, the saving clause — and how we cite them on Form 8833. It is what the return workflow loads when you pick that country on the residency step.

A country desk (Switzerland, Denmark, Italy, Germany, United Kingdom, France, Canada, Australia, Netherlands, Spain) is broader: which local accounts are reportable, which local investment products create Form 8621, how the local pension system is analysed, and the catch-up route. See /countries for all of them side by side.

US federal filing follows your citizenship, not your address, so the engine produces the same draft package wherever you live. If you're in a country with no desk, pick "Other country" on the residency step — you get the full return, just without article-level treaty cites, and you may want a one-off review from a CPA familiar with that treaty.