Stop guessing your tax residency. Start proving it.
As featured in leading publications, Domicile365 is the trusted residency and day count tracking app for high-net-worth individuals, multi-state residents, digital nomads, globally mobile professionals and enterprises managing complex tax, statutory residency, and domicile determinations. Perfect for tracking multi-state travel, proving a change of domicile, and protecting against aggressive city, state, federal or international tax audits.
Core Features
• Automatic day count tracking by Country, State, City (including New York City), Province, and Territory
• Unlimited day count alerts by jurisdiction — email and push notifications as you approach key thresholds
• Download CSV logs and cryptographically-signed PDF audit logs — independently verifiable by auditors, CPAs, or advisors on Domicile365.com to confirm location records haven't been altered or tampered with
• Advisor Portal — invite your CPA or financial adviser for read-only access to your location data
• Manual entry for dates before you activated the app
• On-device AI to search and analyze your location history by date
• 60-day free trial — no credit card required
Location generally recorded throughout the day using the highest level of accuracy supported by your phone (consistent with efficient battery usage). Location is determined using a combination of GPS, Bluetooth, Wi-Fi hotspots and cell tower locations and then recorded. Please note that the continuous tracking may have a minor impact on battery life and data usage since location is continuously recorded and saved in the cloud. The App's applicable location algorithms are designed to minimize battery use.
Separate tools to check (a) Schengen Region status, (b) U.S. substantial presence test, (c) rolling 183 out of 365 day check, (d) Puerto Rico day count testing and (e) U.K. statutory residency test using the U.K. April 6 through April 5 tax year.
Tools also provided to check location day counts considering only overnight stays or 24 hour periods (for UK, Monaco, Maryland, New Mexico, and other similar jurisdictions).
Audit Defense
Tax jurisdictions are increasingly aggressive in asserting residency — subpoenaing phone records, cell tower data, credit card logs and other items. The burden of proof is on you. Domicile365 generates a cryptographically-signed, contemporaneous record of your physical presence — and now lets you produce a signed PDF that auditors, courts, or opposing counsel can independently verify on Domicile365.com, confirming that your location logs are authentic and have not been altered after the fact.
– Sixty (60) day free trial provided. At the end of the sixty (60) day free trial period, you will be given the opportunity to subscribe to the Domicile365 monthly subscription to continue using the features of the app, which include daily tracking of your location, setting location alerts and access to tracking logs to establish your precise recorded locations.
• Payment will be charged to Apple Account at confirmation of purchase.
• Subscription automatically renews unless auto-renew is turned off 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, and identify the cost of the renewal.
• Subscriptions may be managed and auto-renewal may be turned off by going to the user's Account Settings after purchase.
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to the App, where applicable.
Enterprise features are available. Track employee day counts for employer-employee income tax withholding. States impose employer income tax withholding based on days worked in-state. NYC Unincorporated Business Tax analysis, San Francisco Gross Receipts tax analysis, state heatmaps.
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