Visa & tax day-counting guides
Plain-English explanations of the rules that decide how long you can stay — and how to keep an accurate count.
Schengen 90/180 calculator
Add your trips and see your days left and the latest date you can leave.
SchengenThe Schengen 90/180 rule, explained
How the Schengen 90/180 rule really works: the rolling 180-day window, which days count, the 29 countries, common mistakes and how to calculate your remaining days.
Tax residencyThe 183-day rule isn’t one rule
Why “stay under 183 days” doesn’t settle your tax residency: how countries count days differently, the UK Statutory Residence Test, the US Substantial Presence Test and tie-breakers.
United StatesUS ESTA and the 90-day rule
How long you can stay in the US on ESTA under the Visa Waiver Program, why Canada and Mexico trips don’t reset the clock, and what happens if you overstay.
GuideHow to track your days abroad (without a spreadsheet)
The simple system for keeping an accurate record of days in each country — for visas, tax residency and residency permits — and the evidence worth keeping.
United KingdomThe UK Statutory Residence Test, explained
How the UK Statutory Residence Test decides tax residence: the midnight rule, the automatic overseas and UK tests, the sufficient ties test with day-count tables, and the mistakes that trip people up.
SpainSpain's 183-day rule for tax residency
When you become tax resident in Spain: the more-than-183-days test, why short trips abroad can still count, the centre-of-interests and family tests, and what that means if you split your year between countries.
UK passportSchengen rules for UK citizens after Brexit
How the Schengen 90/180 rule applies to British passport holders: which days count, passport validity rules, the Entry/Exit System, ETIAS, second homes in Spain, France and Italy, and how to stay longer.
ItalyItalian tax residency: the 183-day rule and the 2024 reform
When you're tax resident in Italy: the 183-day test, the four criteria introduced in 2024 — physical presence, residence, domicile and the population register — and what Italians abroad registered with AIRE should track.
