FlagSage
For anyone with ties to more than one country

See which countries' rules your life touches

Citizenship, tax residency, companies, banks, assets, where you live and your digital accounts. FlagSage shows the official rules for 40 countries, turns your facts into questions for a professional, and counts your days.

Run the free exposure check See a fictional evidence file

No sign-up or emailRuns in your browserA source on every rule

The two-country problem

Moving between countries raises questions no single country answers

Each country applies its own tests to the same life. A passport, a visa, a day count and a home can each point somewhere different. Most online answers flatten that into one rule of thumb. We show the actual tests side by side.

How tax residency works Compare 40 countries
Under 183 days means no tax anywhereMany countries also look at your home, family and economic ties, and some count days over 12 months or several years.
A visa makes you tax residentImmigration permission and tax residence are separate. A visa neither proves nor rules out tax residence.
Leaving a country ends its claimSome countries tax citizens wherever they live, and others keep you resident until ties are cut.
A second passport changes your taxesCitizenship rarely decides tax residence. The United States is a major exception.
What you can do here

Read the rules, record your facts, take them to a professional

Four separate things, so you always know what you are using.

Exposure check

Answer a few questions per country. Get review questions tied to each rule and source, with missing facts and gaps listed.

Free 路 no sign-up

Travel day ledger

Log stays, see days per country under two counting methods, find unrecorded days, and export a CSV.

Free 路 no sign-up

Evidence file

A factual record of your days, ties and income types by country, with sources and open questions. See the fictional sample.

Sample only 路 paid file not open

A qualified professional

The person who decides how the rules apply to you. We list official registers to check credentials.

Independent 路 no referrals yet
The seven flags

Seven separate connections, seven guides

Flag theory splits your life into seven connections that can sit in different countries. Each guide explains how that connection works, who acts on it, and where it stops.

Flag 1

Citizenship and passports

Descent, naturalization and what a passport does and does not decide.

  • Know the main routes to citizenship
  • Keep citizenship, immigration permission and tax residence apart
  • Check whether each country accepts dual citizenship
Read the citizenship and passports guide Flag 2

Tax residency

How countries decide who they tax, and why 183 days is not the rule.

  • Separate citizenship from tax residence
  • Learn the domestic tests countries use
  • Use treaty tie-breakers when two countries claim you
Read the tax residency guide Flag 3

Company

Where a company is incorporated, managed and owned, and how that links to you.

  • Separate incorporation from company tax residence
  • Find where the company is actually managed
  • Check controlled foreign company rules in the owner's country
Read the company guide Flag 4

Banking

Account access by residence, CRS and FATCA reporting, and bank checks.

  • Expect residence to shape account access
  • Understand CRS automatic exchange of information
  • Know what FATCA means for US persons
Read the banking guide Flag 5

Assets

Where assets sit, who owns them, and reporting, pensions and inheritance.

  • Separate where an asset sits from where you live
  • Keep records that show who owns what, and how
  • Check whether your residence country asks for reports on assets abroad
Read the assets guide Flag 6

Living base

Visas, residence permits and work rights, kept apart from tax.

  • Ask five separate questions, not one
  • Know whether you hold a visa or a residence permit
  • Treat permanent residence as an immigration status that can carry tax effects
Read the living base guide Flag 7

Digital

Domains, payment accounts, data location and provider restrictions.

  • Read this hub knowing FlagSage has no vendor affiliations
  • Know who controls your domain and what you owe the registrar
  • Expect payment and fintech providers to decide access by your legal residence
Read the digital guide

How the flags fit together

Why one connection can pull others with it, and the questions that cross every flag.

See all seven
How it works

Read, record, review

FlagSage does the research and the record keeping. A professional makes the personal decision.

  1. ES-RES-01183 days, calendar year
    ES-RES-02Centre of economic interests
    SourceAgencia Tributaria
    1

    Read the official rules

    Every country page lists its residence tests with the official source, effective period and the date we checked it.

  2. Portugal200 days
    Unrecorded29 days
    2

    Record your facts

    Log your days and answer plain questions about homes, family, work and status. Unknown is always an answer.

  3. Questions14
    Missing facts6
    Verdicts0
    3

    Review with a professional

    Print or export your questions and day counts, and take them to a qualified adviser in each country.

Same days, different rules

One day count, read four ways

Countries set their own day figures, periods and counting methods. These come straight from the country records.

183 days

Spain. More than 183 days in the calendar year.

Residencia habitual en territorio espa帽ol (Manual pr谩ctico IRPF 2025)
183 days

United Arab Emirates. 183-day physical presence test.

Cabinet Decision No. 85 of 2022 on Determination of Tax Residency (unofficial translation), Article 4(2)
183 days

New Zealand. 183-day rule.

Inland Revenue IR292: New Zealand tax residence (April 2026)
183 days

United States. Substantial presence test: 31 days and a weighted 183-day count.

IRS: Substantial presence test
40 countries

Start from a country

Residence tests, reporting duties, social security, living-base and citizenship basics, with official sources. Broad research coverage does not mean every tool branch is reviewed for every country.

Africa

South AfricaZA

Asia

IndiaINJapanJPMalaysiaMYSingaporeSGThailandTH

Central America

Costa RicaCRPanamaPA

Europe

BulgariaBGCroatiaHRCyprusCYCzechiaCZEstoniaEEFranceFRGeorgiaGEGermanyDEGreeceGRHungaryHUIrelandIEItalyITMaltaMTNetherlandsNLPolandPLPortugalPTSpainESSwitzerlandCHT眉rkiyeTRUnited KingdomGB

Middle East

IsraelILUnited Arab EmiratesAE

North America

CanadaCAMexicoMXUnited StatesUS

Oceania

AustraliaAUNew ZealandNZ

South America

ArgentinaARBrazilBRChileCLColombiaCOUruguayUY

Compare all countries in one table

Residence rules guide

All 40 countries in one printable PDF

Every country record, the seven flags, comparison tables and worksheets to bring to an adviser. US$49 once, with updates for 12 months.

See the guide Free sample
Evidence file

A factual record a professional can work from

Days, ties and income types by country, with the sources, your corrections and the questions still open. It records facts. It does not decide what they mean.

  • Built from the two free tools and your own statements
  • Portable to any qualified preparer, in your format
  • The prepared file is not sold. The sample is free
See the full sample Compare packages
Where we stop

What FlagSage does, and what it never does

What we do

  • Publish general guides with official sources and check dates
  • Turn your facts into review questions, without conclusions
  • Count days under the methods countries use
  • Show you how to check a professional's credentials

What we never do

  • Tell you where you are tax 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
Questions

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?

40 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.

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
40 countries. See list
Sources
272 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.