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Live day counts
Daysium records your time automatically and applies the relevant tax counting rules.
For professional athletes
Focus on performance. We’ll count the days.
Automatic day counts. Evidence built as you travel. Your agent and advisors kept informed.
Through the season
Wherever the season takes you, your record needs to keep up.
Day counts need updating.
A changed competition, training camp or injury means another round of calculations.
Your team needs the numbers.
Your agent and advisors need current counts, without another request for dates or spreadsheets.
A total needs proof.
If your tax residence is questioned, a spreadsheet or AI calculation needs supporting evidence behind it.
Why it matters now
Your career is public. Keep the complete picture.
Results, appearances and public posts show fragments of your movements. Your advisors need the full supporting record if questions from tax authorities come later.
171 million accounts
Financial-account information worth nearly €13 trillion was automatically exchanged across 116 jurisdictions in 2024.
Digital scrutiny
HMRC guidance permits public social media, including Instagram, to be used where proportionate when checking an individual’s tax position, while its use of AI and data science continues to expand.
40 months
HMRC investigations of wealthy individuals yielding more than £100,000 took an average of 40 months to close in 2023–24.
Against that, spreadsheets, calendars and memory
are not much of a system.
All your travel, turned into a reliable record
Current, recorded, ready
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The right people, informed.
Give your agent, manager or advisor access to your position and day counts through the Daysium Portal.
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Evidence built as you go
Your travel is recorded at the time with supporting evidence that protects you from scrutiny.
You focus on your performance.
Daysium keeps your days in order, with your advisors in the loop.
Inside Daysium
One platform. Two parts.
Daysium Mobile keeps the record.
The Daysium Portal keeps your support team informed.
Automatic recording and relevant counting rules keep your day counts current, wherever you travel.
Daysium builds your location record automatically; a daily selfie adds supporting evidence.
Your advisors can generate reports when needed, without asking you to prepare another update.
Named advisors, your agent and chosen support people see your position and counts—not detailed locations or evidence—and you control access.
How we build rules
Every Rule Card starts with the law.
Our assurance process turns tax law into tested, signed-off rules, reviewed and kept current.
Once your strategy is set, Daysium automatically works out the count for you — so you don’t have to interpret the law or calculate it yourself.
Built with the people who use it
Guided by
tax experts
Daysium was shaped with tax advisors, accountants, tax lawyers and former tax inspectors who deal with residence questions and enquiries in practice.
Their experience informs how Daysium counts days, keeps the record and helps make your position easier to evidence when questions arise.
Valuable Partnerships
A pioneering company in the field of day counting and record-keeping. Their innovative tool simplifies complex date-related calculations, offering immense value to our clients. This partnership marks a significant step towards enhancing our client services with advanced solutions.
Alan Kennedy,Managing Director,Trident Tax
Fantastic product
We found out about Daysium from our advisors, it’s a fantastic product, very easy to use and with someone on the end of the phone in case of need or to fix any issues, we would and have recommended it to anyone that would need such a product, it’s totally intuitive too!
Nick T,Monaco No more spreadsheets
After more than two decades of manually counting days spent in various jurisdictions using Excel, I discovered Daysium. It’s transformed how I record my whereabouts — automated, precise, a defensible record ready for when I need it.
Sanjeev P,Zurich Exciting technology
The technology that Daysium has developed is incredibly exciting and I’ve really been enjoying getting under the hood of what’s in store for individuals that utilise the software! The team's passion and vision for solving the ongoing nightmare of tracking for residency status is brilliantly evident.
Rhys Thomas,Managing Director,WTT Group
Founding partners
Frequently asked questions
How much do I need to do?
Keep location permissions enabled and add a daily selfie. Daysium does the counting and recording; occasional gaps may need your confirmation.
Why pay if I can use a spreadsheet or AI?
That’s still admin you have to do. Daysium records as you travel, applies the relevant rules and builds the evidence—keeping your advisors informed with less work from you.
Can Daysium help with Schengen day counts?
Yes, where those rules apply to you. Your counts stay current as you travel, giving your support team the numbers to inform their decisions.
Can my agent and advisors check without asking me?
Yes. You choose who can see your position and counts through the Daysium Portal. Your advisors can generate reports without asking you for another update.
What if my tax residence is questioned?
Your advisors have a record captured at the time by Daysium, with supporting evidence and an audit trail. They can respond from an established record, rather than reconstructing your movements.
Does Daysium replace my tax advisor?
No. Your advisors set the strategy. Daysium applies the relevant counting rules and keeps the record.
Recognised by
Finalist two years running at theDigital Jersey TechAwards2024 – Startup Category2025 – Fintech, Startup
#2 Most Recommended StartupOut of 3,000+ companies, Daysium was ranked 2ndin a live, AI-powered scoring of Europe’s topstartups by global VCs & investors
The next step
Make Daysium part of your team.
Speak to your agent or advisor about getting started.
For agents and advisors
Book a call to discuss licences for your athletes.
In essence
There's nothing to see here — everything is in order.
Your days counted. Your record ready. Your focus on your performance.