Tax Residency Calculator
Track your days in each country to understand tax residency implications. Know the 183-day rule and avoid surprise tax obligations.
Most countries use the 183-day rule: spending 183 days or more (roughly 6 months) in a country within a tax year typically makes you a tax resident there. This calculator tracks your days, warns when you're approaching thresholds, and helps you plan travel to maintain your desired tax status. Some countries have stricter rules, so always verify specific requirements.
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Your Stays
Days by Country
Potential Tax Implications
Common Tax Residency Rules
| Country | Days Threshold | Notes |
|---|---|---|
 United States | 183 days* | Uses Substantial Presence Test with weighted calculation |
 United Kingdom | 183 days | Statutory Residence Test has additional factors |
 Germany | 183 days | Or having a permanent home |
 Portugal | 183 days | NHR program offers tax benefits for new residents |
 Spain | 183 days | Beckham Law may apply for new residents |
 Thailand | 180 days | As of 2024, foreign income remitted to Thailand is taxable |
 UAE | 183 days | No personal income tax regardless of residency |
 Singapore | 183 days | Territorial tax system - only Singapore income taxed |
 Mexico | 183 days | Or having economic center of interests |
 Canada | 183 days | Significant ties test also applies |
* The US uses a Substantial Presence Test: current year days + 1/3 of prior year days + 1/6 of second prior year days. This calculator uses the simplified 183-day rule for all countries.
Frequently Asked Questions
What is the 183-day rule?
The 183-day rule is a common threshold used by many countries to determine tax residency. If you spend 183 days or more (roughly 6 months) in a country within a tax year, you may become a tax resident and owe taxes on your worldwide income. Some countries count partial days, others don't.
Can I be a tax resident in multiple countries?
Yes, it's possible to be considered a tax resident in multiple countries simultaneously. This can lead to double taxation, though many countries have tax treaties to prevent this. If you might be a dual resident, consult a tax professional who understands international tax law.
Do I count arrival and departure days?
It depends on the country. Some count both arrival and departure days as full days, others count only one, and some count neither. This calculator counts both dates as days in the country. For borderline cases, verify with the specific country's tax authority.
What if I'm under 183 days but have a home there?
Many countries have additional residency criteria beyond days present, such as having a permanent home, economic ties, or family connections. The 183-day rule is often just one factor. Some countries may consider you a resident even with fewer days if you have other significant ties.
Disclaimer: This calculator provides general guidance only and is not tax or legal advice. Tax residency rules are complex and vary by country. Your specific situation may involve factors not captured by this tool. Always consult a qualified tax professional before making decisions that could affect your tax status.
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