ZeroCrew
Flags Tax
Flags Tax tools
Calculators from Flags Tax that run entirely in your browser. Nothing you type leaves the page.
- Substantial presence test calculator
Enter your US days for three years and see the weighted 183-day math worked out step by step, with exempt years for students and teachers. Everything runs in your browser.
- UK Statutory Residence Test calculator
Run the automatic overseas tests, the automatic UK tests, and the sufficient ties test on one page. Each tie you tick moves your day ceiling as you go.
- FEIE physical presence test calculator
Pick a 12-month window, add your US trips, and see whether you reach 330 full days abroad for the Foreign Earned Income Exclusion. The calculator also finds the window that gives you the most full days.