Sojourn Group

Sojourn builds privacy-native software for people who live across borders — expats, digital nomads, airline crew and more.

Short, precise explainers on expat taxes and tax residency: the 183-day rule, US filing obligations abroad (FBAR, FATCA, Form 8938), double-tax treaties, and the day counts behind them — country by country. For pilots: flight time, logbook rules, and the paperwork of flying under different aviation authorities.

Sojourn keeps the record on your device. We cannot read it — by architecture, not by policy. Sojourn is a record-keeping tool, not tax advice.

Free residency check: sojourn-group.com