How accurate is this tracker?

The day-counting math is exact. The interpretation depends on your specific country's rules — and most countries' rules are more complex than just day counting. UK SRT has 'sufficient ties' tests; ATO has multi-factor tests; CRA considers residential ties beyond days. Use this tool as a primary day-counter; confirm interpretation with a qualified tax adviser.

Where is my data stored?

Only in your browser's local storage. Nothing is sent to any server. Closing the browser tab keeps the data; clearing browser data wipes it. Privacy-first by design. Export CSV regularly for backup.

What's the difference between UK SRT and US Physical Presence Test?

UK SRT: 91-day threshold per UK tax year (6 Apr - 5 Apr) + sufficient ties tests. US PPT: 35-day threshold (max US days) per any 12-month window for FEIE qualification. The PPT requires 330+ FULL days OUTSIDE the US in the 12-month window. UK uses calendar days; US uses full days only.

What if I'm tax-resident of multiple countries?

The Double Tax Agreement (DTA) tie-breaker applies. Most DTAs follow OECD model: permanent home → centre of vital interests → habitual abode → nationality → mutual agreement. Get tax advice from a specialist in both countries. Dual residency is complex and rarely accidental — it usually means at least one residence test wasn't cleanly satisfied.

Do business trips and conferences count?

Yes, everywhere. Days in your home country count regardless of purpose. The 'work tie' under UK SRT particularly cares about working days (40+ working days in UK is one of the four ties). Keep a separate log of working-day vs leisure-day if you regularly work during home visits.

What about transit days through home country?

Generally count if you stay overnight. Same-day connecting flights typically don't count. UK SRT specifically has a 'transit day' rule — connecting flights at LHR with no overnight don't count. US PPT requires full 24-hour days outside US, so transit through US disqualifies that day. Always verify with country-specific guidance.

How does the 'sufficient ties' test work in the UK?

UK SRT scales between automatic non-residency (16-46 days) and automatic residency (183+ days) using 'ties'. The 4 ties: family tie (spouse/minor children UK-resident); accommodation tie (UK home available for personal use 91+ nights); work tie (40+ UK working days); 90-day tie (90+ UK days in either of last 2 tax years). Number of ties × number of days creates a sliding-scale residency risk. Under 91 UK days + 0-1 ties is safe for most people.

What's the worst-case if I miscount?

Becoming inadvertently tax-resident of your home country, owing income tax + late filing penalties + interest on the income that was UAE-tax-free during 'wrong' year. UK can claim back several years of un-paid tax. India aggressive on retroactive RNOR vs Resident determinations. US has perpetual citizenship-based taxation so PPT misses just lose FEIE benefit (income above zero is fully taxable). Major financial mistake — get tax advice before assuming non-residency.

Can I undo a residency mistake retroactively?

Hard. Once a tax year closes with you crossing the threshold, you typically can't unwind. Some countries allow voluntary disclosure programs (UK Worldwide Disclosure Facility, US Streamlined Foreign Offshore) for past errors but they're for cases where you were genuinely tax-resident and didn't file properly — not for re-classifying yourself as non-resident retroactively. Get advice; don't assume it can be fixed.

Does this tool replace a tax adviser?

No. This is a day-counting tool to help you stay aware of your residency status. The interpretation of country-specific rules requires qualified tax advice. A typical UK / US / Aus expat tax advisor consultation costs £300-£800 once a year — substantially less than the cost of inadvertent residency. Get advice annually.

183-Day Tax Residency Tracker

Browser-based tracker for UK SRT, US Physical Presence Test, Australia, India NRI, Canada residency rules. Log your home-country days; we calculate whether you're within non-resident limits. Data saved locally — never sent to a server.

Last updated: May 2026

Privacy: data stored locally, never sent to server

Your trip data is stored only in your browser's local storage. Nothing is sent to any server. Use this tool to track home-country days for tax-residency planning; export CSV for your records / tax-adviser sharing. This is informational — consult a qualified tax adviser before relying on these calculations.

Your home country

Tax-residency rule

Stay under 91 UK days/year for typical sufficient-ties non-residency. Auto-non-resident if under 16 days (recently UK-resident) or 46 days (otherwise).

Window start

Window end

Set window to UK tax year (6 Apr - 5 Apr)

Add a United Kingdom trip

Trip start (in United Kingdom)

Trip end (last day in United Kingdom)

Notes (optional)

Days in United Kingdom

Window: Sun, 8 Jun 2025 → Mon, 8 Jun 2026

days in United Kingdom this window

0 daysThreshold: 91 days

91 days remaining

United Kingdom-specific tips

SRT thresholds: automatic non-resident under 16 days (if recently UK-resident) or 46 days. The "sufficient ties" test scales between automatic thresholds — under 91 days/year keeps you safe under most ties combinations.

4 ties: family tie (spouse/minor children in UK), accommodation tie (UK home for personal use), work tie (40+ UK working days), 90-day tie (90+ UK days in either of last 2 years).

Split-year: if leaving UK partway through tax year, you can apply for split-year treatment. Get tax advice — the SRT has subtle traps.

Tax residency guide United Kingdom relocation guide

Best practices for tracking

Track every trip in real-time.Add the trip the moment you book or arrive. Don't reconstruct from memory at year-end — you'll miss days.
Include all home-country trips: business trips, family events, weddings, funerals, conferences — they all count. ATO / HMRC / IRS audit will pull immigration records.
Keep boarding passes / passport stamps: physical evidence of arrival / departure dates. Airlines retain electronic records for 7 years; download them periodically.
Half-days nuance:rules differ by country. UK SRT: midnight test (where you are at midnight). US PPT: full 24-hour days only. AU / India / Canada: generally calendar-day basis. Read your country's specific rule.
Document UAE residency:keep Ejari, Emirates ID, employment contract, UAE bank statements, kids' school records. If audited by your home tax authority, this evidence supports your non-residency claim.
Watch the "sufficient ties" test: UK SRT in particular — having UK family + UK property + occasional UK work + over 90 days in last 2 years can make you UK resident even with just 60 UK days.
Backup the data: this tool stores in browser local storage. Export CSV regularly. Lost browser = lost data.

183-Day Tax Residency Tracker

Your home country

Add a United Kingdom trip

Days in United Kingdom

United Kingdom-specific tips

Best practices for tracking

Tax residency tracker — frequently asked questions

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