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.
The 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.
