Free tool
Tax residency calculator
Add up this year's stays and see how close you are to becoming a tax resident under each country's rule.
Your stays in …
Calendar yearSporadic absences may count — see the FAQ
Days in … ·
—/ 183
Estimate only · Not tax advice
Days are not the whole story
Tax residency doesn't depend on the day count alone: even if you stay under 183 days, the tax authority may deem you a resident on other criteria this calculator doesn't measure.
Main home
Keeping your main home in the country can be enough to be deemed a resident.
Center of economic interests
If your business or your main income is in the country, it's a strong tie.
Spouse and children
Your immediate family living in the country creates a presumption of residency.
Daywhere counts your days for you, all year long
Background GPS, proof of where you were and a warning before you reach the threshold. The calculator is today's snapshot; the app is the whole movie.
Quick guide
What tax residency is (and why it matters)
Tax residency determines which country taxes your worldwide income. The most widespread criterion is the 183-day rule: if you spend more than half the year in a country, that country considers you a tax resident, with its taxes, obligations and penalties.
Crossing the threshold without noticing is expensive: you can end up owing taxes in a country where you never meant to be taxed, plus surcharges and interest. That's why it pays to keep the count up to date and keep proof of where you were.
How days are counted in Spain
In Spain, any day of presence on Spanish territory within the calendar year counts, and sporadic absences are added unless you can prove tax residency in another country. Entry and exit days both count. If your question is about immigration — how long you can stay as a visitor — that's the 90/180 rule: use the Schengen calculator.
FAQ
Common questions about the 183 days
Do entry and exit days count?
Yes: any day you set foot in the country, even for a few hours, counts as a day of presence. A Friday-to-Sunday trip adds 3 days. That's why counting from memory almost always falls short.
What are “sporadic absences”?
In Spain, short trips abroad are counted as presence unless you can prove tax residency in another country, usually with a residency certificate. In other words: a two-week holiday abroad doesn't subtract days in the eyes of the tax authority.
Can I be a tax resident in two countries at once?
Two countries may claim you as a resident in the same year. That's what double taxation treaties are for, with tie-breaker criteria: permanent home, center of vital interests, nationality. That's tax advisor territory, not calculator territory.
What proof can I be asked for?
In an audit, the burden of proof is on you: tickets, boarding passes, hotel invoices, card statements, contracts… Geolocation helps reconstruct your year, but it is not conclusive proof on its own: always keep the receipts.
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