FlagSage
Between countries

Living across borders? See whose rules apply.

Tax residency, passport and banking rules for 52 countries, each linked to its official source. Free tools count your days and list what to ask an adviser.

Run the free check All 52 countries in one guide · US$49

How many days make you resident?

It depends on the country, and on how it counts.

180days in a calendar yearThailand180-day residence test182days in the tax yearIndia182-day test183days in a calendar yearSpainMore than 183 days in the calendar year183days in any 12 monthsPortugalMore than 183 days in any 12-month period184days in any 12 monthsBrazilTemporary visa: resident on completing 184 days within up to twelve months183days over several yearsUnited StatesSubstantial presence test: 31 days and a weighted 183-day count915days over several yearsSouth AfricaPhysical presence test

Day figures only. Most countries also weigh your home, family and work. Compare all 52 countries

Four things people get wrong

What people assume, and what the rules say.

  • Under 183 days means no tax anywhere
    Many countries also weigh your home, family and work, and some count over 12 months or several years.
  • A visa makes you tax resident
    Immigration status and tax residence are separate tests. A visa neither proves nor rules it out.
  • Leaving a country ends its claim
    Some countries tax citizens wherever they live, and others keep you resident until your ties are cut.
  • A second passport changes your taxes
    Citizenship rarely decides tax residence. The United States is the big exception.

Free tools

No sign-up. Nothing leaves your browser.

Exposure check

Pick up to four countries and answer plain questions. Get what to ask, with the rule and source behind each.

Run the check

Travel day ledger

Log your stays and see days per country, counted two ways. Export a CSV.

Open the ledger
Schengen 90/180 calculatorDays used and days left Substantial presence testThe IRS 31 and 183-day test FEIE 330-day calculatorYour best 12-month window

📄 See a sample evidence file

Seven flags, one guide each

Your passport, tax home, company, bank, assets, home base and online life can each sit in a different country.

Citizenship and passportsDescent, naturalization and what a passport does and does not decide.Tax residencyHow countries decide who they tax, and why 183 days is not the rule.CompanyWhere a company is incorporated, managed and owned, and how that links to you.BankingAccount access by residence, CRS and FATCA reporting, and bank checks.AssetsWhere assets sit, who owns them, and reporting, pensions and inheritance.Living baseVisas, residence permits and work rights, kept apart from tax.DigitalDomains, payment accounts, data location and provider restrictions.How they fit togetherWhy one flag pulls the others with it.
📘 Residence rules guide

All 52 countries in one PDF

Every country record, comparison tables and worksheets in one file you keep offline and bring to your adviser.

  • US$49 once
  • 12 months of updates
  • 14-day refund
See the guide Free sample

Start from a country

Residence tests, reporting duties and official sources for each.

PortugalSpainUnited StatesUnited KingdomUnited Arab EmiratesSingaporeThailandMexicoBrazilIsraelGermanyItaly

All 52 countries

Where we stop

Research and records. Never a verdict.

✅ What we do

  • Publish guides with official sources and check dates
  • Turn your facts into questions, without conclusions
  • Count days the ways countries count them
  • Show how to check a professional's credentials

🚫 What we never do

  • Tell you where you are resident or what you owe
  • Prepare, sign or file returns, or represent you
  • Promise a passport, visa, bank account or tax result
  • Collect tax IDs, passport numbers or bank details

Common questions

Is FlagSage tax or legal advice?

No. FlagSage publishes general research with official sources and gives you tools to organize your own facts. A qualified professional decides how the rules apply to you.

Does the exposure check tell me where I am tax resident?

No. It lists the rules your facts touch in each country and turns them into review questions, with the rule ID and official source for each. It never gives a residence verdict, a tax amount or a filing answer.

Do I need an account or an email address?

No. Both free tools work without sign-up, email or payment, and you can print or download every result.

Is my information sent anywhere?

No. The tools run in your browser. Your answers are not sent to FlagSage, not put in the page address and not tracked. The day ledger saves to your browser only if you turn that on.

Which countries are covered?

52 countries across the Americas, Europe, the Middle East, Asia, Africa and the Pacific. Each country page lists the residence rules we recorded, the official sources and the date we checked them. See all countries.

What does the US$49 guide add?

The same research in one printable PDF: all 52 countries, comparison tables, worksheets and each country's questions for a professional, with new editions for 12 months. Look inside the guide.

Can you connect me with a professional?

Not yet. FlagSage has no verified partners, so we don't refer anyone. The professional help page lists official registers where you can check a professional's credentials yourself.

Countries covered
52 countries. See list
Sources
498 official sources. Register
Tax year
Rules current as checked
Review
Not professionally reviewed
Sources checked November 8, 2026

How we research and update: methodology and editorial policy. Spotted an error? Report a correction.

Hero films by CoolPlaces4K JC, Aaron Hairston, Mikhail Nilov, Maksim Romashkin, Joseph Eulo, Timo Volz, Mike Bird, from Pexels.

Know what to ask before you move

No sign-up, nothing sent, and a source on every rule.

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