Tailored memberships for every globally mobile client
Private Client
Executive
A simple solution for clients with low-risk, single jurisdiction needs
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
billed annually
Transform tax residency compliance for your team.
- 1 User Licence
- 1 Tax Jurisdiction Ruleset
- Automatic Day Counting
- Photo Evidence
- Self-Serve
Private Client
Private Client
For clients exposed to complex cross-border tax rules under growing scrutiny
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
billed annually
Transform tax residency compliance for your team.
- 1 User Licence
- 2 Tax Jurisdiction Rulesets
- Automatic Day Counting
- Photo Evidence
- Day Count Reports
- Concierge Service
Private Client
Platinum
Group membership for multiple Private Clients within a family or entity
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
billed annually
Transform tax residency compliance for your team.
- 2 or more User Licences
- 3 Tax Jurisdiction Rulesets
- All Private Client Features
- Concierge Service
Private Client
Enterprise
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
Transform tax residency compliance for your team.
Transform tax residency compliance for your team.
Private Client
Executive
A simple solution for clients with low-risk, single jurisdiction needs
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
billed annually
Transform tax residency compliance for your team.
- 1 User Licence
- 1 Tax Jurisdiction Ruleset
- Automatic Day Counting
- Photo Evidence
- Self-Serve
Private Client
Private Client
For clients exposed to complex cross-border tax rules under growing scrutiny
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
billed annually
Transform tax residency compliance for your team.
- 1 User Licence
- 2 Tax Jurisdiction Rulesets
- Automatic Day Counting
- Photo Evidence
- Day Count Reports
- Concierge Service
Private Client
Platinum
Group membership for multiple Private Clients within a family or entity
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
billed annually
Transform tax residency compliance for your team.
- 2 or more User Licences
- 3 Tax Jurisdiction Rulesets
- All Private Client Features
- Concierge Service
Private Client
Enterprise
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
Transform tax residency compliance for your team.
Transform tax residency compliance for your team.
FAQs
Got questions? We're here to help. Chat with our team anytime for support or explore our FAQ to quickly find answers to common questions.
What is Daysium?
What is Daysium?
What is Daysium?
Daysium is a tax compliance platform that automates day counting and record-keeping across jurisdictions. It ensures your residency status is accurate, evidence is secure, and you’re protected if ever challenged by a tax authority.
How do the membership plans differ?
How do the membership plans differ?
How do the membership plans differ?
Executive: Self-serve option for single jurisdiction needs, without the need for reporting.
Private Client: For individuals balancing complex tax rules under growing scrutiny — technology protects, Concierge Service provides a human safety net.
Platinum: Group membership for multiple Private Clients within a family or entity.
Enterprise: A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.
What is Concierge Service?
What is Concierge Service?
What is Concierge Service?
Included with Private Client and Platinum memberships, Concierge provides:
- Liaison with your tax advisors or other professionals when needed
- White-glove onboarding and rule configuration
- Continuous support from a dedicated Private Client Advisor
- Ongoing oversight to ensure compliance remains on track
Concierge is your human safety net, making sure the technology is always aligned with your personal circumstances and advisor strategy.
How does Daysium protect me in a tax enquiry?
How does Daysium protect me in a tax enquiry?
How does Daysium protect me in a tax enquiry?
Daysium automatically builds a contemporaneous record of your travel and residence. This digital evidence can be shared with your advisors, providing a defensible position if ever questioned by a tax authority.
Can I change my Membership Plan later?
Can I change my Membership Plan later?
Can I change my Membership Plan later?
Yes, you can upgrade or switch your plan at any time to match your evolving tax compliance needs.
How quickly will I see value?
How quickly will I see value?
How quickly will I see value?
From day one. Daysium starts automating your day counts immediately, builds secure evidence, and gives you clarity on your residency position — freeing you from spreadsheets and guesswork.

Discover how to be tax compliant with Daysium
Created in partnership with industry experts, tackling the complex challenges of day counting and tax record-keeping.
Guided by
tax experts
Created in partnership with industry experts, Daysium tackles the complex challenges of day counting and tax record-keeping. Our partner community plays an active role in realising this vision, bringing deep expertise in tax compliance for the globally mobile.
"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."

Managing Director,
WTT Group
"The Daysium team deliver technology that makes taxes easier for expats and globally mobile individuals. What's not to like about that? We're really excited to work with them and offer our clients the ability to use this technology."

Founder,
Expat Taxes
"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."

Managing Director,
Trident Tax
"Users of Daysium will be unlikely to see any additional tax liabilities if the platform has been used correctly.
Should any additional tax liabilities arise though, I would certainly be confident to put forward arguments that the use of the software was itself a means of taking reasonable care to pay the correct amount of tax."

Director NHD Tax
Solutions & Founder of
The Contentious Tax Group