Track time spent in a country for tax residency, visa compliance, and the 183-day rule. Add multiple trips to get your annual total.
Most countries consider you a tax resident if you spend more than 183 days per year within their borders. This can trigger local income tax obligations even for foreigners. For US expats, the Physical Presence Test for FEIE eligibility requires 330 days outside the US in a 12-month period.
The Schengen Zone (most of Europe) limits non-EU nationals to 90 days within any 180-day rolling window as a tourist — separate from formal residency visas.