Best App for Tracking Residency for Tax Purposes

If you split the year between two states, the state you left will eventually ask how many days you spent there. A tax residency tracker app answers that question with a record made at the time, instead of a reconstruction made in April. To find the best tax residency tracker app for your situation, this guide compares the apps people actually use, including the ones we compete with, and says honestly who each one suits.

Prices were checked on each company's own site on 2026-10-06. Where a company does not publish a price, we say so. For a feature-by-feature table, see our comparison page.

Best tax residency tracker apps compared

App	Best for	Platforms	Tracking	Price (checked 2026-10-06)
iReside	Individuals and snowbirds tracking US states, plus countries and visas	App, web dashboard	Automatic background GPS	$44.99/year after free trial
Monaeo	Companies and advisers that need enterprise admin	See monaeo.com	Automatic day counting	$99/user/month or $999/user/year; enterprise custom (monaeo.com/pricing)
TaxBird	Two-home owners who want a simple tracker on Android or iPhone	iOS, Android	Automatic background location	Plans not priced on taxbird.com
Domicile365	Users who want a long free trial	See domicile365.com	Day tracking with alerts	Individual $19.99/month; 60-day free trial (domicile365.com)
TaxDay	Workers who need work-day vs non-work-day logs	iOS, Android, web	Automatic GPS	$9.99/month after 30-day trial (taxday.com)
Flamingo	International movers who want visas, tax days and document storage together	iOS	Automatic border-crossing tracking	Plans not priced on its homepage
Bounded	Android users, and anyone rebuilding past years from photos or timelines	iOS, Android	Automatic, plus imports	Free to download with trial; several paid tiers
Days Monitor	Travellers focused on Schengen and visa days on a budget	iOS, free web calculators	Automatic background logging	Premium $19.99/year (daysmonitor.com/pricing)

What makes a good tax residency app

Five things separate a tax residency app from a generic location history:

1. Automatic background tracking. The record has to exist for days you forgot about. Manual logging fails on exactly the days that matter.
2. State rules built in. A count is only useful against the right line: 184 or more days with a permanent place of abode in New York, more than 183 in New Jersey or North Carolina, no day line at all in California. See the 183-day rule state by state.
3. Alerts before the limit. Knowing in December is too late. You want a warning while you can still change a trip.
4. A report someone else can read. Your CPA, and possibly an auditor, needs a day-by-day report, not a screenshot.
5. Correct day rules. Flyovers should not count as days in a state; partial days and NYC vs New York State need handling.

1. iReside (our pick for individuals)

iReside is a tax residency tracker app that counts your days automatically in the background by state, province and country, with nothing to log by hand.

• Counts automatically using background GPS, ignores states you only fly over, and recognises in-flight segments.
• Counts New York City separately from New York State, which matters for city resident tax questions.
• 307 jurisdictions and 77 tracker presets, including state statutory-residency tests, the US Substantial Presence Test, the UK Statutory Residence Test and Schengen 90/180 across its 29 countries.
• Planned vs Actual: add future trips and see where the year will land before you book.
• Alerts before limits, with the date you need to leave by.
• Audit-ready PDF reports, a home-screen widget and a web dashboard.
• Price: $44.99/year after free trial. Cancel anytime.

Best for: people leaving New York, California, New Jersey, Connecticut or Massachusetts for Florida or Texas; snowbirds; hybrid commuters; anyone who also tracks a visa limit.

Not a fit if: you want to import years of past travel from photos or another app (days before you install are added by hand), or you want the app to tell you whether you are a resident. It is a day counter app, not a tax adviser.

2. Monaeo

Monaeo is the premium option. Its pricing page lists automatic day counting, multi-jurisdiction tracking and audit-ready exports on its monthly plan, priority support and advanced reporting on its annual plan, and SSO, admin controls and HRIS and mobility integrations on its enterprise plan.

Best for: companies and family offices that need admin controls and integrations. More in iReside vs Monaeo. Where it falls short for individuals: price. $999 per user per year is about 20 times iReside's $44.99 for a single person tracking their own days.

3. TaxBird

TaxBird is built for people with two homes ("Two homes? Don't wing it, get TaxBird"). It runs in the background using your device's location services, shows days spent and days left in each location, sends threshold alerts and exports summary and detailed reports. It is on both iOS and Android.

Best for: two-home households, including Android users. More in iReside vs TaxBird. Where it falls short: taxbird.com does not publish a price, and the site is built around two-home residence tracking rather than visa limits.

4. Domicile365

Domicile365 offers an Individual plan at $19.99 a month with unlimited alerts and email support, an Enterprise plan on request, and a 60-day free trial with no credit card. Buying the annual individual subscription gets a month free.

Best for: people who want a long trial before committing. More in iReside vs Domicile365. Where it falls short: at $19.99 a month, a year costs several times iReside's annual price.

5. TaxDay

TaxDay focuses on US states. It records time in each state automatically using GPS, separates work days from non-work days, includes tax rules for all 50 states and generates reports for your preparer, with export to Excel. It runs on iOS, Android and a web portal, at $9.99 a month after a 30-day trial.

Best for: employees who need a work-day log for wage allocation, and Android or web users. Where it falls short: monthly pricing adds up, and it is state-focused. If you are weighing a switch, see our TaxDay alternative guide.

6. Flamingo

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

Best for: internationally mobile people who want visas, tax days and documents in one place. Where it falls short: no Android yet, and prices are not shown on its homepage.

7. Bounded

Bounded tracks days automatically across countries, states and cities and has the strongest tools for rebuilding the past: it imports from photo location data, Google Timeline, Flighty, TripIt and CSV, and processes everything on the device. It exports CSV and PDF and ships 100+ built-in counters. It is on iOS and Android.

Best for: Android users, and anyone who needs to reconstruct previous years. We concede both points: if you need either, Bounded is the better choice. More in iReside vs Bounded. Where it falls short: it has several pricing tiers rather than one published price.

8. Days Monitor

Days Monitor pairs free web calculators (Schengen, US, UK and Canada) with 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: budget-minded travellers focused on visa days. More in iReside vs Days Monitor. Where it falls short: its site leads with visa and country calculators, so check that it covers the state rules you need before relying on it for a state residency question.

Spreadsheets and Google Maps Timeline

Free, and better than nothing if you are disciplined. The weaknesses are the ones that matter in an audit: gaps on the days you forgot, no rule applied to the count, and no warning before a limit. A location history also does not know that a flyover is not a day in Kansas.

How to use a tax residency tracker for audit defense

• Start before the move. The record should show the date your life changed, not begin months later.
• Leave tracking on. Gaps are what auditors probe.
• Check monthly. A count near the line in July is a scheduling problem; in December it is a tax problem.
• Keep the paperwork too. A day record shows presence; your license, voter registration and home show intent. See what counts as proof of residency.
• Share the report with your CPA at filing time, and keep it for as long as the state can audit.

For the rules behind the counts, see how to track tax residency days and what to expect in a tax residency audit. If you also track days abroad, our best app for international tax residency comparison covers country and visa tracking.