Add your stays in one country and see exactly how close you are to the 183-day tax residency threshold this calendar year.
Most countries use physical presence as the primary test of tax residency: spend 183 days or more in the country within a year and you are a tax resident — usually meaning your worldwide income becomes taxable there. 183 is simply the majority of a 365-day year.
In most jurisdictions any part of a day counts as a full day of presence — arrival days, departure days, weekends and holidays included. Some countries carve out narrow exceptions (airport transit, forced stays); a few count only nights (midnights). When in doubt, count generously.
The counting period differs by country: most use the calendar year (Spain, Portugal, Germany), the UK uses its April-to-April tax year, and some apply a rolling 12-month window (Ireland's look-back, the US Substantial Presence Test even weighs prior years). This calculator uses the calendar year — the most common case.
Beware: you can become tax resident with far fewer days through a centre of vital interests (home, family, main business), a permanent dwelling, or domicile rules. Conversely, tax treaties can break a tie when two countries both claim you. The day count is the first line of defence, not the whole battle — track it precisely and consult a professional near the line.
If you are physically present in a country for 183 days or more during the relevant year, most countries treat you as a tax resident, making your worldwide income potentially taxable there.
In most countries yes — any part of a day present counts as a full day. A few jurisdictions count only midnights spent in the country.
Yes. Ties like a permanent home, family or your main economic interests can make you resident with far fewer days, depending on the country and applicable tax treaties.
Daysabroad counts every border crossing in the background — visa limits, residence rules and tax residency on a home-screen widget.
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