Can one app track tax residency and Schengen visa days at the same time?

Yes. They are separate tests on the same calendar: Schengen limits most non-EU visitors to 90 days in any 180-day period across 29 countries, while tax residency is decided by each country's own rules. iReside, Flamingo, Bounded and Days Monitor all track Schengen days alongside other counts.

Is the 183-day rule the same in every country?

No. Many countries use 183 days, but the period and the counting differ, and some can make you resident below 183 days. The UK Statutory Residence Test combines day counts with ties, and the US Substantial Presence Test weights days over three years. See our guide to countries where 183 days is not the rule.

Does a tax residency tracker app work offline abroad?

Location services work without a data connection, so apps that track in the background generally keep recording and sync later. Check each app's own documentation, and keep your phone on: no app can count a day your phone did not see.

Do I need a tax residency app if I already use a Schengen calculator?

A Schengen calculator answers one question from dates you type in. A tax residency app records every country automatically and checks several rules at once, which matters if you also have a US, UK or home-country tax test to watch.

Is a tax residency app a substitute for a tax adviser?

No. It gives you an accurate record of where you were and warns you before limits. Whether you are resident somewhere, and how a treaty tie-breaker applies, is a question for a cross-border tax adviser.

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Best App for International Tax Residency in 2026

Q: What is the best app for tracking international tax residency?

One that records your country every day automatically, knows the different tests (183 days, the UK Statutory Residence Test, the US Substantial Presence Test, Schengen 90/180), alerts you before a limit and exports a report. iReside does this for $44.99 a year after a free trial. Bounded and TaxBird also run on Android, and Monaeo targets companies with enterprise plans.

Quinn Moran · Published March 16, 2026 · Updated October 6, 2026

The short answer

The best app for tracking international tax residency counts your days in every country automatically, applies each country's rule, and warns you before a tax or visa limit. For most expats, nomads and frequent travellers, iReside is our pick: automatic GPS day counting by country, state and province, the US Substantial Presence Test and UK Statutory Residence Test counted live, Schengen 90/180 across 29 countries, alerts and audit-ready PDF reports for $44.99 a year after a free trial. Flamingo suits people who also want document storage, Bounded suits Android users and anyone rebuilding past years, and Monaeo suits companies managing mobile staff.

On this page

Best App for International Tax Residency in 2026

If you live or work across borders, the country that can tax your worldwide income is often decided by a day count. Each country runs its own test, and a visa clock like Schengen 90/180 runs alongside them. A tax residency app keeps all of those counts from one record of where you actually were.

This guide compares the best tax residency tracker apps for international use. Prices were checked on each company's own site on 2026-10-06; where a company does not publish a price, we say so. Our comparison page has the full feature table. For US state tracking specifically, see our best app for tracking residency for tax purposes.

International tax residency apps compared

App	Best for	Platforms	Countries and visas	Price (checked 2026-10-06)
iReside	Expats, nomads and frequent travellers who also track US states	App, web dashboard	Countries, states and provinces; SPT, UK SRT and Schengen live	$44.99/year after free trial
Flamingo	International movers who want visas and document storage together	iOS (Android in development)	Countries, US states, select cities; Schengen; visa expiry	Plans not priced on its homepage
Bounded	Android users and anyone rebuilding past years	iOS, Android	Countries, states and cities; 100+ counters	Free to download with trial; several paid tiers
Days Monitor	Budget visa tracking	iOS, free web calculators	Schengen, US, UK and Canada calculators	Premium $19.99/year (daysmonitor.com/pricing)
Monaeo	Companies with globally mobile staff	See monaeo.com	Multi-jurisdiction tracking	$99/user/month or $999/user/year (monaeo.com/pricing)
TaxBird	Two-home households	iOS, Android	Residence tracking	Plans not priced on taxbird.com
TaxDay	US workers who need work-day logs	iOS, Android, web	US states	$9.99/month after 30-day trial (taxday.com)
Domicile365	A long free trial	See domicile365.com	Day tracking with alerts	Individual $19.99/month; 60-day free trial (domicile365.com)

The international tests a tracker has to handle

International residency is not one rule. A useful tax residency app has to apply several at once:

Test	What it counts	Our guide
US Substantial Presence Test	31 days this year and 183 weighted days over three years (all of this year, a third of last year, a sixth of the year before)	SPT guide and calculator
UK Statutory Residence Test	Day counts combined with ties; as few as 16 days can matter	SRT after non-dom abolition and calculator
Schengen 90/180	90 days in any 180-day period across 29 countries (a visa rule, not a tax rule)	Schengen guide and calculator
FEIE Physical Presence Test	330 full days outside the US in a 12-month period	FEIE guide
Country 183-day tests	Vary by period (calendar, tax or rolling year) and by how part days count	Countries where 183 days is not the rule

The IRS Substantial Presence Test page is the official source for the weighting. When you are resident in two countries at once, tax treaties use tie-breaker rules (permanent home, centre of vital interests, habitual abode, nationality), and where you spent your days feeds directly into the habitual abode step.

1. iReside (our pick for individuals)

iReside counts your days automatically in the background on your phone, by country, state and province, with nothing to log by hand.

307 jurisdictions and 77 tracker presets, including the US Substantial Presence Test and UK Statutory Residence Test counted live, and Schengen 90/180 across its 29 countries.
Flights handled: in-flight segments are recognised and states you only fly over are ignored.
Planned vs Actual: add future trips and see where each count will land before you book.
Alerts before limits, including the date you need to leave a visa area by.
US states too, with New York City counted separately from New York State, for people who still have a state to prove they left.
Audit-ready PDF reports, a home-screen widget and a web dashboard.
Price: $44.99/year after free trial. Cancel anytime.

Best for: US citizens abroad who still need to prove they left a state, foreign nationals watching the SPT, UK leavers watching the SRT, and long-stay Europe travellers.

Not a fit if: you need to import years of past travel from photos or other apps (days before you install are added by hand), or you want document storage in the same app. It is a day counter app, not a tax adviser.

2. Flamingo

Flamingo Compliance tracks border crossings between countries, US states and select cities, covers Schengen 90/180, tracks visa expiry dates and visa-free stay limits, and adds tax residency assessment tools, document storage and exportable reports. It is iOS only; the company says Android is in development. Plans are named Settler, Resident and Globetrotter, with a 30-day free mode.

Best for: internationally mobile people, including citizenship-by-investment holders, who want visas, tax days and documents together. Where it falls short: no Android yet, and its homepage does not show prices.

3. Bounded

Bounded tracks days automatically across countries, states and cities, with 100+ built-in counters for visa limits, tax rules and citizenship requirements. Its standout is rebuilding history: it imports from photo location data, Google Timeline, Flighty, TripIt and CSV, processing on the device. It exports CSV and PDF and runs on iOS and Android.

Best for: Android users and anyone who needs to reconstruct earlier years. On both counts Bounded is ahead of us. Where it falls short: several pricing tiers rather than one published price. More in iReside vs Bounded.

4. Days Monitor

Days Monitor offers free web calculators for Schengen, the US, the UK and Canada, plus an iPhone app that logs days automatically in the background and exports PDF or CSV. Premium is $19.99 a year and includes cloud backup.

Best for: travellers who mainly need visa day limits at a low price. More in iReside vs Days Monitor. Where it falls short: iPhone only for automatic tracking, and its site leads with visa calculators rather than state tax tests.

5. Monaeo

Monaeo's plans include automatic day counting, multi-jurisdiction tracking and audit-ready exports, with SSO, admin controls and HRIS and mobility integrations on its enterprise tier.

Best for: employers and family offices managing many travellers. Where it falls short for individuals: $999 per user per year. More in iReside vs Monaeo.

6. TaxBird, TaxDay and Domicile365

These three are mainly US-state tools, covered in detail in our state residency app comparison. TaxBird tracks two-home households on iOS and Android; TaxDay logs work days by state on iOS, Android and web at $9.99 a month; Domicile365 offers an Individual plan at $19.99 a month with a 60-day trial (see iReside vs Domicile365). If your exposure is mostly abroad, check that each covers the countries and visa rules you need.

How expats and nomads should use a tracker

Start before you leave. The record should show the day you left your old country or state, which matters most for anyone leaving California or New York.
Track every country, not just the ones you think matter. Weekend trips add up against both tax tests and Schengen.
Watch the strictest clock first. For many people that is Schengen 90/180 or the FEIE's 330 full days, not a 183-day tax test.
Keep the paperwork too. For treaty claims, the US proof of tax residency is IRS Form 6166; see what counts as proof of residency.
Share reports with a cross-border adviser and keep them for as long as any country can audit.

For more on why a record made at the time beats a reconstruction, see passport stamps are disappearing: how to prove where you were and international tax residency and why tracking days matters.