Question 1

What is the 183-day rule for tax residency?

Accepted Answer

The 183-day rule is used by most countries to determine tax residency. If you spend 183 or more days in a country during a calendar or fiscal year, you are generally considered a tax resident and may owe local taxes on worldwide income. Some countries count partial days, while others only count overnight stays.

Question 2

Can I be a tax resident of two countries at the same time?

Accepted Answer

Yes, dual tax residency is common for expats. When two countries claim you as a tax resident, tax treaties use "tie-breaker" rules: permanent home location, center of vital interests (family, economic ties), habitual abode, and nationality, in that order. Without a treaty, you may need to pay taxes in both countries with foreign tax credits.

Question 3

How do I avoid becoming a tax resident accidentally?

Accepted Answer

Track your days carefully in each country using a tool like our Tax Residency Counter. Be aware that some countries have additional triggers beyond the 183-day rule: owning property, having a local bank account, or maintaining a permanent home can establish residency. Plan border runs or travel to stay under thresholds where needed.

Question 4

Does the US use the 183-day rule?

Accepted Answer

US citizens are always US tax residents regardless of days spent abroad. For non-citizens, the US uses the Substantial Presence Test: 31+ days in the current year AND a weighted total of 183+ days over 3 years (current year days + 1/3 of prior year + 1/6 of the year before). The Closer Connection Exception may override this for some individuals.

Tax Residency Day Counter

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US Substantial Presence Test