Tax-residency calculators
Browser-based, privacy-first calculators for the most common tax-residency rules. No signup, no tracking, no data leaves your device.
- Start here
Which calculator do I need?
Not sure where to start? Answer two quick questions and get pointed at the right calculator for your situation.
Open the calculator → - International
Schengen 90/180 calculator
Rolling-window calculator for non-EU citizens in the Schengen Area. Days used, days remaining, and projected exhaustion date.
Open the calculator → - US Federal
Substantial Presence Test calculator
IRS 3-year weighted formula for non-citizen US tax residency. 31-day current-year minimum + 183 weighted-day threshold.
Open the calculator → - Generic
183-day rule calculator
Configure jurisdiction, threshold (183 / 184 / custom), and tax-year window. Works for any country or US state with a day-count rule.
Open the calculator → - Multi-jurisdiction
Multi-country day counter
Enter your trips once and see your day count against several residency thresholds at the same time, and which one you'll cross first.
Open the calculator → - United Kingdom
UK Statutory Residence Test calculator
Enter your UK days and ties to see whether the SRT sufficient-ties test makes you UK resident for the 6 April – 5 April tax year.
Open the calculator → - US State
New York 184-day rule calculator
Enter your New York days and abode status to see if you'd be a statutory resident, and how exposed you are to a residency audit.
Open the calculator → - US Federal
FEIE 330-day calculator
Check whether you meet the Physical Presence Test, 330 full foreign days in a 12-month period, to claim the Foreign Earned Income Exclusion.
Open the calculator → - International
Canada residency calculator
Score your residential ties and days in Canada to see whether the CRA would treat you as a factual or deemed resident.
Open the calculator → - Treaties
Treaty tie-breaker walkthrough
Resident of two countries at once? Walk the OECD cascade (permanent home, vital interests, habitual abode, nationality) and see where it points.
Open the calculator → - Reference
Tax year calculator
See which tax year any date falls in for the UK, Australia, India, and more, with a reference table of tax year dates by country.
Open the calculator →