What is the 183-day rule?
Many countries treat you as a tax resident if you spend more than 183 days there in a tax year or in a 12-month period. Tax residents usually pay income tax on their worldwide income. The rule also appears in most double tax treaties, where it decides whether a country may tax employment income earned during a temporary stay.
The 183 days do not have to be consecutive. Separate trips add up, which is why frequent travellers and digital nomads cross the threshold without noticing.
Calendar year or rolling 12 months?
Countries count differently. Some, like Croatia and Germany, look at presence in a calendar year or a period spanning two years; others, such as the UK, use their own tax year and a statutory residence test with more criteria; Spain counts days in the calendar year. The calculator shows both the calendar-year total and the highest number of days in any 365-day window, so you see the stricter figure.
Days or nights?
Under the OECD model treaty commentary, any part of a day spent in a country, including the day of arrival and departure, usually counts as a day of presence. Some national rules count midnights instead. Switch the “Count” option to see both results.
183 days is not the only test
- Permanent home: if you have a home available to you in a country, you may be resident there even with fewer days.
- Centre of vital interests: where your family, work and economic ties are.
- Habitual abode and nationality: tie-breaker rules in tax treaties when two countries claim you.
Not being resident anywhere is rarely possible: your home country usually keeps taxing you until you can show residency elsewhere.
Schengen 90/180 is a different rule
The Schengen rule limits how long non-EU visitors may stay in the Schengen area (90 days in any 180). It is about immigration, not tax. Use the Schengen calculator for that.
Frequently asked questions
What is the 183-day rule for tax residency?
Do arrival and departure days count?
Can I be tax resident with fewer than 183 days?
Is the 183-day rule the same as the Schengen 90/180 rule?
Updated: November 2026 · Supremio Digital, Zagreb
