Finalist in the UHNW Private ClientServices of the Year award 2026
No more spreadsheets and reliance on memory.
With Daysium’s smartphone app, your real-time day counts are in the palm of your hand, empowering you to make informed travel decisions instantly.
An intuitive digital solution that aids tax compliance and continually builds a contemporaneous body of digital residency evidence ready to defend against scrutiny.
Daysium automates complex tax law, logging your travel and calculating your days automatically based on the rules of each tax jurisdiction you spend time in.
Tax Jurisdiction Rulesets
Tax Jurisdiction Rulesets
Tax Jurisdiction Rulesets
We've coded complex tax law into our platform so now you can count days accurately, aiding tax compliance and removing doubt.
Geo-tagged Evidence
Geo-tagged Evidence
Geo-tagged Evidence
An accurate day count is all well and good, but a tax inspector will want to know that you were there, not just your phone. Upload geo-tagged selfies as clear evidence of your location, not just your device.
Automated Location Logging
Automated Location Logging
Automated Location Logging
Daysium automatically logs your location, creating a complete timeline for every day of the year. It's equally important to prove where you weren't, as much as where you were.
Receipts & Boarding Passes
Receipts & Boarding Passes
Receipts & Boarding Passes
You are obliged to keep records to evidence your claim of tax residence. The quality of this documentation is critical. Daysium continuously builds a contemporaneous body of digital evidence ready to withstand any scrutiny.
Invite your advisor, family member or associate into Daysium Portal for a live, shared view of your status — every jurisdiction, always up to date.
See the full picture on one travel calendar, available only in the Daysium Portal. Every day counted, every jurisdiction, evidenced as it happens. No reports to chase, no waiting for the next update.
Your advisor sees your counts and status. Your evidence and location stay private, protected by the same encrypted infrastructure behind every part of Daysium.
Real-time Compliance
Real-time Compliance
Real-time Compliance
Real-time insights into your day counts allow you to make confident, proactive travel decisions, avoiding unintentional overstays in any tax jurisdiction.
Tax Enquiry Ready
Tax Enquiry Ready
Tax Enquiry Ready
Be fully prepared for tax enquiries with organised, secure records that give you a clear, defensible position if questions arise.
Adviser Collaboration
Adviser Collaboration
Adviser Collaboration
Share accurate, up-to-date records via Daysium Mobile with your tax advisor or invite them to Daysium Portal for a real-time view of your day counts. Together, you can make informed decisions and reduce the risk of miscommunication.
Secure Digital Evidence
Secure Digital Evidence
Secure Digital Evidence
Your data is encrypted and stored on Google Cloud Platform — infrastructure that meets ISO/IEC 27001:2022 standards, ensuring your records are protected and accessible when you need them.
Tax enquiries are stressful, intrusive, expensive and time-consuming. Get organised so that you can navigate them more quickly.
Real-time insights into your day counts allow you to make confident, proactive travel decisions, avoiding unintentional overstays in any tax jurisdiction.
Provide your advisor with secure, encrypted reports or give access to live views, ensuring an easy and reliable process for annual tax filings, without the risks of email-based communication.
Your data is safely stored in the cloud with enterprise-level encryption, certified as ISO/IEC 27001:2022 compliant. We're also Cyber Essentials Certified.
