How the calculator counts
- Match your country's rule. Set the limit, the period and the date its tax year starts.
- Days or nights. Count any part of a day, or only the nights you spend there.
- Stay below, or reach it. Stay under the limit to avoid residence, or switch to Reach target if you need it.
The 183-day rule
The 183-day rule is the most common day-count test for tax residency. Spend 183 days in a country in a calendar year, a tax year, or a rolling 12 months, and you can become a tax resident. The threshold can be different or missing at all, depending on country rules — home, family, or work can still qualify you with no day count.
The UK counts differently
In the UK, 183 days is only one of the automatic UK tests. The Statutory Residence Test counts midnights, and depending on your UK ties and recent residence history, as few as 16 days can make you resident.