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Mexico determines tax residency primarily by 'casa habitación' (home) and center of vital interests. Day counts matter for the 50% income test under treaties.

The IRS Substantial Presence Test lets certain visa categories, students (F, J, M, Q), teachers and trainees, and others exclude their US days entirely.

Italy treats you as a tax resident if you're registered there, have your habitual abode there, or spend 183+ days. Plus the impatriate regime for workers.

Japan classifies foreigners as non-resident, non-permanent resident, or permanent resident, each with different tax exposure. The 5-year rule is the key.

Singapore taxes residents at 0–24% with no capital gains tax. Residency is based on the 183-day rule plus a qualifying-employee test. Here's how to track it.

State and federal residency auditors want very specific records. Here's the complete list of what they ask for, what you should keep, and how long to keep it.

France uses three alternative tests: habitual residence, professional activity, and center of economic interest, plus a 183-day rule under its treaties.

Canada determines tax residency by significant residential ties, with a 183-day backstop. How the CRA applies it, and what departure tax means for emigrants.

Four active Facebook groups for US expats and digital nomads, what each one is good for, and why residency and day-count questions never belong in a thread.

Impatriate regimes, lump-sum taxation and non-dom status all cut the tax bill of someone who moves in. How Italy, Switzerland, Spain and Malta differ.

Cyprus is in the EU but not in Schengen, so its 90-day visitor limit is separate and days there do not count against Schengen. How 90, 60 and 183 differ.

The ATO uses four tests for Australian tax residency: resides, domicile, 183-day, and superannuation. Here's how each works for expats and Australians.

Auditors distinguish contemporaneous records, created at the time, from reconstructed ones created later. Here's what actually counts as contemporaneous.

If two countries both claim you as a tax resident, the treaty tie-breaker decides. How the OECD model applies: permanent home, vital interests, abode.

State residency audits target high earners who claim to have left. What to expect, the timeline, the evidence requests, and how to defend your domicile.

Non-citizens become US tax residents under either the Substantial Presence Test or the Green Card test. How each works, and what happens when both apply.

Ireland uses a 183-day rule and a two-year cumulative 280-day rule, plus ordinary residence and domicile. How the four interact for inbound residents.

Even if you meet the IRS Substantial Presence Test, you can avoid US tax-resident status by claiming closer connection on Form 8840, if you qualify for it.

The IRS Substantial Presence Test uses a 3-year weighted day-count formula. Here it is in plain math, with worked examples for visas and travel patterns.

Topia is enterprise mobility software for global employers. Tax Days is for individuals. Here's why the comparison matters and which is right for you.

Working remotely from several states triggers nexus, withholding, and potential double taxation. How to track days and avoid a surprise state tax bill.

Domicile365 is a long-running residency tracker for snowbirds and cross-border workers. Tax Days is the iPhone-native alternative. Here's how they compare.

Pennsylvania has a 3.07% flat tax, but Philadelphia adds a 3.75% city wage tax. How domicile, statutory residence, and local tax interact for leavers.

iReside and Tax Days both target privacy-conscious, internationally mobile users. An honest comparison on price, tracking method, coverage and privacy.

Illinois taxes residents at a flat 4.95%, and the move to Florida is popular among Chicago-area professionals. How Illinois residency rules really work.

For Americans abroad, Brits in the EU, and anyone with a foreign tax home, day counts decide where you owe tax. Here's the playbook for tracking thresholds.

TaxBird and Tax Days both target snowbirds and cross-border residents. Here's an honest comparison on price, jurisdictions, GPS, privacy, and audit support.

Monaeo is a long-running residency tracker for high-net-worth individuals at $1,200+ a year. Tax Days is the privacy-first iPhone app at $29.99 a year.

West Virginia's 183-day rule catches non-domiciliaries with a home in-state, while leavers can only break residency through a 30-day domicile safe harbor.

Snowbirds cross two very different borders for tax: the state line and the US-Canada border. How to count days for each, and the forms that protect you.

Oklahoma generally presumes residency if you spend more than seven months of the year in-state. The statute is written in months, and it is rebuttable.

North Dakota's test taxes you as a resident if you keep a permanent home there and spend more than seven months (210 days) in-state, above the usual 183.

New Mexico taxes you as a resident if you're physically present 185 days or more, but only full 24-hour days count. Partial travel days generally do not.

Nebraska taxes you as a resident if you keep a permanent place of abode there and spend more than 183 days in-state, and any part of a day counts fully.

Kentucky generally treats you as a resident past 183 days with a home in-state, but reciprocity with seven neighbors keeps cross-border wages taxed at home.

Iowa presumes you maintain a permanent place of abode there if you keep an Iowa home and pass 183 days in-state. It's rebuttable, but the burden shifts to you.

Indiana taxes you as a resident if you keep a permanent home and spend over 183 days in-state, or if you're domiciled there. Plus how reciprocity works.

Hawaii presumes you are a resident if you spend more than 200 days there in a tax year. It is a rebuttable presumption: how it works and how to overcome it.

DC taxes you as a statutory resident if you maintain a place of abode in the District for 183 days or more, a count that can include temporary absences.

Arkansas treats you as a resident only if you keep a permanent home in-state and spend more than six months there. Both conditions must be met, not just one.

Alabama presumes you're a resident if you spend more than seven months of the year in-state, whether or not consecutive, a higher bar than the usual 183 days.

Germany determines tax residency by domicile (Wohnsitz), habitual abode (gewöhnlicher Aufenthalt), or the 183-day treaty test. How each works for expats.

A year end residency review locks in your day count and ties before the tax year closes. Use this December checklist to verify days, fix gaps, and prep early.

Yacht crew tax residency depends on the days you spend on land, not at sea or in the air. Here's how seafarer reliefs and day counting actually work for crew.

This routing guide explains tax residency rules by situation, matching your country, US state, and visa to the exact test and guide that applies to your case.

Vietnam tax residency hinges on 183 days or a permanent home and taxes worldwide income. Here's how the day count, long-stay visas, and the no-DNV reality work.

Turkey tax residency turns on a six-month presence test and taxes residents on worldwide income. Here is how the 183-day rule and the deferral exception work.

The South Africa 183 day rule is the physical-presence test. See how it and ordinary residence decide SARS tax residency on worldwide income, and how to exit.

Schengen overstay penalties range from fines and entry bans to deportation. Here is what overstaying the 90/180 limit costs, plus the tax angle few expect.

The perpetual traveler tax myth promises a life with no tax home. In reality you almost always keep a domicile somewhere, here is what actually decides it.

Foreign account reporting residency drives it: US persons file FBAR and FATCA, CRS-country residents are auto-reported, non-doms and non-residents differ.

How Monaco tax residency works: the bank deposit requirement, no personal income tax, the 183-day presence rule, and the big French exception expats miss.

The medical day exception tax residency rule, exempt-individual days, and military days each cut your taxable count under the IRS SPT, US states, and UK SRT.

The Ireland non dom regime has no deemed-domicile clock, so the remittance basis can last indefinitely. How it works, what it taxes, and how treaties interact.

Greece golden visa tax, made clear: the permit grants residency rights, not tax residency. Greek worldwide tax usually triggers only past 183 days a year.

Georgia country tax residency hinges on the 183-day rule, and its territorial system plus the low Individual Entrepreneur regime keep foreign income untaxed.

Estonia e-Residency is a digital business ID, not tax residency. What it changes for your company's tax, what it leaves untouched personally, and the traps.

Brazil tax residency starts after more than 183 days in any rolling 12-month window. How the day count, RFB exit rules, and 2025 dividend changes work.

How Argentina tax residency works: the 12-month physical-presence rule, worldwide wealth tax, and how the 2025 Bienes Personales reform changed the rates.

Residency audit season starts in April. Here's how to file a clean part-year or nonresident return and pre-build day-count evidence that survives an audit.