Tax residency calculator
Count your days against the 183-day rule
Log your trips and see how many days of presence you have in a country over a tax year, measured against the 183-day threshold. Then learn why the day count is only the first of several tests that decide where you are tax resident.
Optional label for your result.
183 in most countries. Some use 90 or 120.
Calendar year. UK and a few others differ.
Days of presence in this country, 2026
0/ 183
Add at least one stay with valid arrival and departure dates to see your day count.
Everything you type stays in your browser and is never sent anywhere. The day count is a proxy. It is not legal or tax advice, and it does not by itself decide your tax residency.
Why the 183-day rule is a myth
The 183-day rule is the most expensive piece of folklore in the nomad community. It sounds like a rule and entire relocation plans are built on it, but tax authorities work through an ordered set of tests. Staying under 183 days does not clear you if your life stayed behind. Here is the cascade that actually decides it.
- Physical presence
- Days in the country over a tax year. This is what the calculator above measures. It is the first test, and the only one most people know, but it is rarely the last word.
- Permanent home available
- A home kept ready for you, owned or on a long lease, in your old country pulls residency back to it, even under 183 days of presence, if nowhere else offers the same.
- Centre of vital interests
- Where your economic and personal life is centred: family, main income, business, bank accounts, and social ties. A moving van does not move your centre of vital interests on its own.
- Habitual abode
- Where you actually spend your time in a settled pattern across the year, looked at over a longer stretch than a single calendar count.
- Nationality
- The fallback tie-breaker when the tests above do not resolve it. And for US citizens, citizenship-based taxation follows the passport regardless of where they live.
- Substance and anchor
- Residency is decided by what you can substantiate under audit: a real home, local banking, registrations, contracts, utilities. An anchor is documentation, not a story.
For the full framework, the anchor checklist, and the two-step exit process, read how tax residency actually works for digital nomads.
Track it continuously, across every country
This calculator handles one country and one tax year. Real life is messier: several countries counting your days at once, each with its own threshold and tax-year boundaries. The tax residency module inside a GeoCompass Personal Cockpit tracks them all, gives a verdict per country with the OECD tie-breaker cascade, alerts you at 80 percent of any threshold, and exports a trip journal and a defense dossier for your accountant.
See the full tax residency toolkitDay tracker
Illustrative example, not personalisedPortugal183-day presence test
Alerted at 80%0 / 183 days
United Arab Emirates90-day residency test
0 / 90 days
- Projected threshold crossing
- Aug 22 · Portugal
- Trip journal
- 14 trips logged · CSV export
- Defense dossier
- PDF ready
Tax residency calculator FAQ
How does the tax residency calculator work?
Enter each trip to the country you are tracking, with an arrival and a departure date. The calculator totals your days of presence inside the tax year you pick, counting arrival and departure days both as days present, and shows the total against the 183-day threshold (which you can change if the country uses a different number).
Is the 183-day rule enough to change my tax residency?
No. Spending under 183 days somewhere does not clear you if your economic and personal centre of gravity stayed behind. Tax authorities work through an ordered set of tests: a permanent home available to you, your centre of vital interests, your habitual abode, then nationality. Day counting is a proxy, not the decision.
Which days count toward tax residency?
Most physical-presence tests count any day on which you are present in the country, including the day you arrive and the day you leave. The calculator follows that convention. A few countries use rolling windows or exclude transit days, so confirm the exact rule for your country.
What if my tax year is not the calendar year?
The calculator uses calendar years. Some countries, such as the United Kingdom with its April-to-April year, count over a different window. For those, the day total is still directional, but the real assessment needs the country's own tax-year boundaries and its statutory residence test.
Can I track more than one country at once?
This free tool tracks one country at a time. When two countries both claim you, the outcome runs through the OECD tie-breaker cascade, and that is exactly what the tax residency module inside a GeoCompass Personal Cockpit does: per-country verdicts, day meters with alerts, a trip journal, and a defense dossier.
Does this replace tax advice?
No. The calculator is a directional check, not legal or tax advice. Use it to see where you stand, then confirm your position with a qualified adviser for the countries involved before you act.
Free diagnostic
Counting days is step one. The real question is where you should base yourself.
GeoCompass Signal weighs your income, taxes, mobility and priorities across 200+ jurisdictions, free, in about 6 minutes.
Free. About 6 minutes. No payment, first results on screen.