Tax Days: Residency Tracker
Track Your Tax Residency
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Do you know how many days you've spent in each state this year? Your tax bill depends on it.
Tax Days tracks your days against the residency rules that matter — so you always know exactly where you stand. Log your trips, and the app does the math across US states, the federal Substantial Presence Test, Schengen 90/180, UK Statutory Residence Test, and more.
HOW IT WORKS
1. Choose your jurisdictions from 315 countries, states, and regions
2. Log your trips — arrival date, departure date, and where you went
3. See your status instantly — progress bars show how close you are to each threshold
4. Get warned before you cross a line — notifications alert you at 30, 14, 7, 3, and 1 days out
FEATURES
• Real-time dashboard with rule status across all your jurisdictions
• Interactive calendar — see your entire travel year at a glance, tap dates to add trips
• US state rules: NY 184-day + abode, CA 9-month safe harbor, and all 183-day states
• Federal Substantial Presence Test with full 3-year weighted calculation
• Schengen 90/180 rolling window tracker
• UK Statutory Residence Test (April–April tax year)
• Year-over-year stats and jurisdiction breakdowns
• Search across all your trips and jurisdictions
• iCloud sync across all your devices
• Trip conflict detection — overlapping trips flagged automatically
WHO IS THIS FOR?
• Snowbirds splitting time between New York and Florida
• Remote workers hopping between states without realizing the tax consequences
• Frequent international travelers tracking the Substantial Presence Test
• Digital nomads watching their Schengen days
• Expats who need to know where they stand
• Anyone whose accountant said "you need to start tracking your days"
WHY TAX DAYS?
A single state tax filing mistake can cost thousands. One consultation with a tax attorney costs $300–$500. Tax Days Pro costs $19.99 for the entire year.
Know exactly where you stand.
TAX DAYS PRO
Unlock all features with Tax Days Pro. Start with a free 7-day trial on the annual plan.
• Monthly: $2.99/month
• Annual: $19.99/year (Best value — includes 7-day free trial)
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period. Manage or cancel subscriptions in your Account Settings after purchase.
Privacy Policy: https://www.parra.io/privacy-policy.html
Terms of Use: https://www.parra.io/terms-of-service.html
Small but meaningful polish across the app — refined trip sheets, smoother calendar interactions, a cleaner paywall, and tighter rule progress display.
The developer, Parra LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Parra LLC
- Size
- 4.3 MB
- Category
- Finance
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
English and 32 more
- English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Tax Days Pro $19.99
- Tax Days Pro $2.99
- Copyright
- © 2026 Parra
