Tax Residency Day Counter (183-Day Rule)
Track days spent across multiple countries to assess tax residency risk under the 183-day rule and identify potential home-country tax exposure.
Results
What is it?
The 183-Day Rule is a common threshold used by many countries to determine tax residency: if you spend 183 or more days in a country within a calendar year, you may be considered a tax resident there and liable for local income tax. Many countries also apply their own tiered rules, look-back periods, or tie-breaker treaty clauses.
How to use
1. Enter the number of days you spent (or plan to spend) in each country, including your home country. 2. Review which countries flag as potential tax-resident status (value = 1). 3. Pay close attention to your home country risk � staying under 183 days home is a key strategy for legal tax optimization.
Example scenario
A digital nomad spends 120 days in Thailand, 90 in Portugal, 60 in Mexico, and 95 at home. No single country exceeds 183 days, so no automatic tax residency is triggered in foreign countries. However, the home country may still claim residency based on other ties (domicile, family, bank accounts).
Pro tip
The 183-day rule is a starting point � many countries use additional tests: habitual abode, centre of vital interests, and citizenship. The US taxes its citizens globally regardless of residency. Always consult a cross-border tax professional before making residency decisions. Territorial tax countries (Panama, Paraguay, Georgia) tax only local income and are popular among nomads.