Membership Fees

Tailored memberships for every globally mobile client

From individuals to trusts and family offices, Daysium simplifies tax residence compliance

Executive

A simple solution for clients with low-risk, single jurisdiction needs

£499

billed annually

Book a call
Includes:
  • 1 User Licence
  • 1 Tax Jurisdiction Ruleset
  • Automatic Day Counting
  • Photo Evidence
  • Self-Serve

Private Client

For clients exposed to complex cross-border tax rules under growing scrutiny

£1,999

billed annually

Book a call
Includes:
  • 1 User Licence
  • 2 Tax Jurisdiction Rulesets
  • Automatic Day Counting
  • Photo Evidence
  • Day Count Reports
  • Concierge Service

Platinum

Group membership for multiple Private Clients within a family or entity

from £2,799

billed annually

Book a call
Includes:
  • 2 or more User Licences
  • 3 Tax Jurisdiction Rulesets
  • All Private Client Features
  • Concierge Service

Enterprise

A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.

Transform tax residency compliance for your team.

Book a call

Executive

A simple solution for clients with low-risk, single jurisdiction needs

£499

billed annually

Book a call
Includes:
  • 1 User Licence
  • 1 Tax Jurisdiction Ruleset
  • Automatic Day Counting
  • Photo Evidence
  • Self-Serve

Private Client

For clients exposed to complex cross-border tax rules under growing scrutiny

£1,999

billed annually

Book a call
Includes:
  • 1 User Licence
  • 2 Tax Jurisdiction Rulesets
  • Automatic Day Counting
  • Photo Evidence
  • Day Count Reports
  • Concierge Service

Platinum

Group membership for multiple Private Clients within a family or entity

from £2,799

billed annually

Book a call
Includes:
  • 2 or more User Licences
  • 3 Tax Jurisdiction Rulesets
  • All Private Client Features
  • Concierge Service

Enterprise

A consolidated portal for family offices, trustees, and firms managing complex compliance at scale.

Transform tax residency compliance for your team.

Book a call
Complete features list
Executive
Private Client
Platinum
Essentials
User Licences
1
1
2 or more
Tax Jurisdiction Rulesets
1
2
3
Optional Concierge Service
-
Features
Automated Day Counting
Timeline
Evidence
Photo Capture
Photo Gallery Upload
Add Notes
Audit Trail
-
Day Counts & Reporting
Tax Rule Configuration
Annual Tax Return Day Count
Global Physical Presence Count
Excel Summary Reports
-
Online Account Management
-
Security
Biometric Login
2FA*
-
SSO*
-
-
Advisory & Governance
Data Residency outside UK*
-
-
Data Trust
-
-
from £5,000/yr
Client Support
Email
AI Chat Support 24/7
Talk to a human, 9am-5pm UK
-
Private Client Advisor
-
* Available on request, subject to charge

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.

Get in touch

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.

Get in touch

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.

Founding Partners
Simplifying international tax

"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."

Stephanie Wickham,
Founder,
Expat Taxes
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
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
Protect yourself in a tax dispute

"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."

Sarah Scala,
Director NHD Tax
Solutions & Founder of
The Contentious Tax Group