Free Tax Residency Tools
Eleven free calculators for multi-state taxpayers, digital nomads, and anyone trying to answer a simple question: “Do I owe state tax here?” No login, no email gate, no catch.
Runs entirely in your browser. 100% private.
Schengen 90/180 Calculator
Enter your trips and see days used, days remaining, and the exact date your next day of allowance frees up. Real rolling window.
Open toolFEIE 330-Day Calculator
Check the Foreign Earned Income Exclusion physical presence test across every 12-month window, not just the tax year.
Open toolUK Statutory Residence Test
Run the automatic overseas tests, automatic UK tests and the sufficient ties table in the correct statutory order.
Open toolCanada PR Residency Obligation
Check 730 days in the rolling five-year window, and see how much absence you can still afford.
Open toolUS Naturalization Physical Presence
Days for the 5-year and 3-year routes, with a warning for absences that threaten continuous residence.
Open tool183-Day State Residency Calculator
Enter your days per state and see in real time which state residency thresholds you are approaching or exceeding.
Open toolState Tax Savings Calculator
Estimate how much you could save in state income tax by moving from one state to another.
Open toolResidency Audit Risk Score
Answer 14 questions to get a personalized score showing how exposed you are to a state residency audit.
Open toolResidency Change Checklist
Get a customized, printable checklist of every step you need to take when changing state residency.
Open toolSubstantial Presence Test Calculator
Run the IRS 3-year weighted formula to see whether you meet the Substantial Presence Test.
Open toolState Residency Rules Quick Lookup
Instant residency rules for every state: thresholds, abode requirements, and audit exposure.
Open toolBuilt by iReside
These free tools are powered by the same tax residency data that drives iReside, the iOS app that tracks your state residency days automatically via GPS. The tools help you understand the rules. The app helps you follow them, every day, in the background, with zero manual effort.
Track your days automatically
Stop counting manually. iReside uses GPS to log your state every day in the background. Get alerts before you hit thresholds. Generate audit-ready reports with one click.
Free trial. $34.99/year. Cancel anytime.