Residency Guides
Original, plain-English explainers built around the official rules. Each guide links to the matching calculator.
The 183-Day Rule, Explained Without the Myths
What the 183-day rule really is, where it comes from, how days are counted, and why staying under 183 days does not automatically keep you out of a country's tax net.
9 min read →United StatesThe US Substantial Presence Test, Step by Step
How the IRS three-year weighted formula works, which days are excluded, worked examples, and the closer-connection exception.
8 min read →United KingdomThe UK Statutory Residence Test: Days, Ties and Traps
How HMRC decides UK tax residency: automatic overseas tests, automatic UK tests, and the sufficient-ties table that can make you resident on as few as 16 days.
9 min read →VisasSchengen 90/180: How the Rolling Window Really Works
The Schengen short-stay rule for non-EU visitors, how to count the rolling 180-day window, and why it is different from tax residency.
7 min read →TreatiesResident in Two Countries? How Treaty Tie-Breakers Decide
How the OECD-model tie-breaker ladder (permanent home, vital interests, habitual abode, nationality) resolves dual residency, and what to document.
8 min read →RecordsHow to Prove Where You Were: A Day-Count Evidence Kit
What tax authorities accept as evidence of physical presence, how to build an audit-ready log, and a monthly routine that takes five minutes.
7 min read →Nomads12 Tax Residency Mistakes Digital Nomads Make
The recurring errors that create surprise tax bills for remote workers — from never leaving home-country residency to forgetting state rules.
8 min read →United StatesUS State Residency: The 183-Day Rule Inside the States
How states like New York and California use domicile and statutory-residence tests, why day counts matter for snowbirds and remote workers, and how to document a move.
7 min read →IndiaIndia Residential Status for NRIs: 182, 120 and 60 Days
How India decides Resident, RNOR and Non-Resident status, including the 120-day rule for high-income visitors and the deemed-resident rule.
8 min read →CanadaCanadian Tax Residency: Ties, Sojourning and Leaving
How the CRA decides factual residency through residential ties, when the 183-day sojourning rule makes you a deemed resident, and what to do when you emigrate.
7 min read →The 183 Brief
Rule changes, new nomad visas, day-count tactics and one worked example every week. No spam — unsubscribe any time.