Remote work and digital nomad life in 2026 means splitting your year across borders — and that's exactly how people end up owing income tax to two governments on the same money. Answer a few questions and find out where you actually stand.
Most remote workers know to watch the calendar — stay under 183 days, stay safe. But day-count is only one of several tests tax authorities use. Keeping an apartment on standby, having your spouse and kids based somewhere, or simply earning most of your income from a country's clients can trigger full tax residency long before you hit day 183.
183 days in Spain, Germany, and the UK. 180 in Thailand. A rolling 12-month window in Portugal and Indonesia. Each country counts differently — and some count arrival and departure days too.
Germany and Portugal can treat simply having a home available to you — even one you barely visit — as an independent trigger, regardless of days spent.
Spain, the UK, and Mexico can look at where your family lives or where most of your income comes from, and assign residency there even if you personally stay under the day threshold.
Pick your home/citizenship country and the destination country you want to check — including a dedicated module for the Canada → US Substantial Presence Test.
Days spent, whether you have a home available, whether family lives there, and where your income comes from.
High, Medium, or Low — plus exactly which rule you're closest to triggering, and roughly how many days of runway you have left.
Consultants, agency owners, and creators billing clients in multiple countries while living wherever suits them that quarter.
Employees working for a company in one country while physically based in another — including the common Canada-based, US-employer setup.
People moving through Spain, Portugal, Thailand, Bali, and similar hubs on nomad or long-stay visas, often without realizing those visas don't define their tax status.
Founders running a company from a laptop, where "where I run the business from" and "where I personally live" can create two separate residency claims.
Each guide breaks down the day-count threshold, the secondary tests that can trigger residency early, and the single most common mistake nomads make there.
If you're a Canadian spending significant time in the US — on a TN visa, H-1B, Green Card, or as a daily cross-border commuter — our checker runs the actual IRS Substantial Presence Test formula across three years and flags whether Form 8840 or Form 8833 applies to you.
Run the Canada–US Test →Dual tax residency happens when two countries both classify you as a tax resident in the same year under their own rules, which can expose the same income to tax claims from both governments unless a treaty tie-breaker or foreign tax credit resolves it.
No. Many countries also apply habitual-abode tests (having a home available), center-of-vital-interests tests (family or main income source), or in the US and UAE's case, entirely different frameworks — day count alone can miss the real trigger. See our country guides for the specifics.
Yes — the risk checker tool and all ten country guides on this site are free to use.
Dual tax residency mistakes can mean owing tax on the same income twice, plus penalties for late or missed filings. Ninety seconds now can save a very expensive surprise later.
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