Tax Residency Days Tracker
Count days per country in your tax year, surface the 183-day rule , and track tie-breaker prompts. Free, private, browser-only.
Informational only — not tax or legal advice
This tool counts days only — it does not determine tax residency. The 183-day rule has many exceptions. Confirm your status with a qualified tax professional in each country where you may have a filing obligation.
Data last verified 7 Jun 2026 — methodology
Tax year start varies by country (e.g. UK: Apr 6, AU: Jul 1).
Add your stays above to see day counts per country.
All calculations happen in your browser — no data is sent to our servers.
US Substantial Presence Test — informational preview
The US SPT uses a weighted 3-year formula. This is a preview only — the SPT has many exceptions (exempt individuals, closer connection exception, treaty positions) that require professional review.
Source: IRS Substantial Presence Test
Tie-breaker factors to discuss with your tax advisor
When you have significant days in multiple countries, tax treaties may use these factors to determine which country has primary taxing rights. This tool does not apply these factors — that requires professional advice.
- • Permanent home: Where do you have a permanent home available to you?
- • Centre of vital interests: Where are your personal and economic relations closer?
- • Habitual abode: In which country do you habitually live?
- • Citizenship / nationality: Of which country are you a national?
Source: OECD Model Tax Convention Article 4 — standard tie-breaker sequence used in most bilateral tax treaties.
Day counts are informational only. This tool does not determine tax residency. Always consult a qualified tax professional in each country where you may have a filing obligation.
Crossing borders means complex tax filings
Day counts are just the start. A qualified international tax specialist can help you understand your actual filing obligations in each country.
We may earn a commission if you engage a specialist through some links — this does not affect what we count.
Your data stays in your browser
All stays are saved to localStorage only. Nothing is sent to our servers. No account required.
Considering changing tax residency?
Compare digital nomad and freelancer visas across 40+ countries.
Compare nomad visas →Frequently asked questions
Does this tool determine if I am tax-resident in a country?
No. The tool counts calendar days per country — nothing more. Tax residency is determined by each country's tax authority based on facts and circumstances that include, but are not limited to, physical presence. The 183-day rule has many exceptions. Always confirm your status with a qualified tax professional.
What is the 183-day rule?
Many countries use 183 days of physical presence in a calendar year (or tax year) as a threshold that may trigger tax residency. The exact rule varies by country — some count days differently, some use a rolling 12-month window, and many have exceptions. The threshold shown here is a common starting point, not a definitive determination.
How does the UK Statutory Residence Test (SRT) work?
The UK SRT uses automatic overseas tests, automatic UK tests, and a sufficient ties test. This tool shows your UK day count as an input to the SRT — it does not apply the SRT itself. See HMRC's RDR3 guidance for the full rules.
How does the US Substantial Presence Test (SPT) work?
The US SPT uses a weighted formula: all days in the current year, plus 1/3 of days in the prior year, plus 1/6 of days in the year before that. If the total reaches 183 or more, you may be considered a US resident for tax purposes. This tool shows the SPT preview as informational only. See IRS Publication 519 for the full rules.
Does this tool account for tax treaties?
No. Tax treaties can override domestic residency rules through tie-breaker provisions. This tool counts days only — it does not apply treaty tie-breakers. For treaty analysis, use the Double Tax Treaty Lookup tool (coming soon) or consult a qualified international tax specialist.
Where does the reference data come from?
Country tax year start dates and revenue authority links are sourced from each country's official tax authority website (e.g., HMRC for the UK, IRS for the US, ATO for Australia). All data is last verified on 2026-06-07.
Can I trust the day count math?
The counting logic is deterministic: both the arrival day and departure day are counted as full days (inclusive counting), consistent with how most countries count physical presence. The tool clips stays to the selected tax year window. Always cross-check with your own records and a tax professional before relying on any count for a filing.
Can I embed this tool on my website?
Yes. The tool is available as a free embeddable widget. See the methodology page for the embed snippet. Attribution to crossborderfreelance.com is required.
Was this tool useful?
✓ Thanks — we read every one. We respond within a week if you left an email.