Tax Days: Residency Tracker

Do you know how many days you've spent in each state this year? Your tax bill depends on it. Tax Days tracks your days against the residency rules that matter — so you always know exactly where you stand. Log your trips, and the app does the math across US states, the federal Substantial Presence Test, Schengen 90/180, UK Statutory Residence Test, and more. HOW IT WORKS 1. Choose your jurisdictions from 315 countries, states, and regions 2. Log your trips — arrival date, departure date, and wh