Media type · 183 days in a year

183-day rule

A common day-count reference, not a universal rule.

Key facts

Common figure183 days in a year
MethodVaries by country
EffectCan differ by test

The number is the start of the question

Knowing the number does not settle the outcome. Some systems count days of presence, some count nights, some use a weighted multi-year formula, and some treat any part of a day as a day.

The year itself can also differ: a calendar year, a tax year or a rolling twelve-month period. Check which period the rule uses before projecting.

Frequently asked questions

Does 183 days always make me tax resident?

No. It is one test, and other tests can apply independently. It can also be irrelevant if a different rule or treaty decides the question.

Do arrival and departure days count?

That depends on the rule. The definitions differ, so count the way the authority counts rather than by intuition.

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