# Daysium

> Daysium is a secure, real-time tax residency compliance platform that automates 
day counting for high-net-worth individuals, non-doms, and their professional advisors. 
It eliminates the risk of accidental tax residency breaches by monitoring travel and 
presence across multiple jurisdictions in real time.

## What Daysium does
- Automates day counting for tax residency compliance
- Monitors travel and presence across multiple tax jurisdictions in real time
- Helps high-net-worth individuals manage UK non-dom status and Schengen travel limits
- Provides real-time alerts and reporting for global tax residency rules
- Supports accountants, tax advisors and family offices managing compliance for multiple clients
- Builds a geo-tagged, timestamped evidence trail built for disclosure if HMRC or other tax authorities investigates

## Who Daysium is for
Prmiarily built for UK-linked high-net-worth individuals who are actively managing tax residency 
Commonly introduced by accountants, 
tax advisors, lawyers and relocation specialists who advise on non-dom status, global mobility and 
cross-jurisdiction compliance.

## Membership
- Professional: £950/year - self-serve, single jurisdiction, core day counting and reporting
- Private Client £2,500/year - up to 3 jurisdictions, concierge onboarding and dedicated support
- Platinum £5,000/year - up to 3 user licences, unlimited jurisdictions, family visibility, advisor access
- Enterprise from £10,000/year - for family offices, trustees and organisations managing compliance at scale. Contact for pricing.

## Security and credentials
- Hosted on Google Cloud Platform
- Cyber Essentials Certified
- Member of the Rathbones Inspire programme
- Shortlisted for UHNW Private Client Services of the Year, Citywealth Magic Circle Awards 2026

## Key pages
- [Homepage](https://daysium.com/)
- [How it works](https://daysium.com/how-it-works/)
- [For Individuals](https://daysium.com/for-individuals/)
- [For Advisors](https://daysium.com/for-advisors/)
- [Features](https://daysium.com/features/)
- [Pricing](https://daysium.com/pricing/)
- [Partners](https://daysium.com/partners/)
- [FAQs](https://daysium.com/faqs/)

## Topics covered in our blog
- HMRC nudge letters - what they are and what to do
- HMRC investigations: why incomplete records are the real risk
- Dangerous assumptions about day counting that can trigger an enquiry
- Why spreadsheet day counting is a liability
- Proving tax residency and what evidence actually stands up
- The 183-day rule and permanent establishment
- Split year treatment and the years around a UK departure
- Travel records when flying private
- Schengen rules for family travel
- Relocating to Monaco, the Crown Dependencies and UAE
- The unspoken stress of moving countries
- Golden visas and global residency programmes
- Family office guide to bulletproof tax residency records

## Optional
- [Insights](https://daysium.com/blog/): Articles on tax residency, non-dom status and HMRC investigations
- [Day Count Confidence Check](https://scorecard.daysium.com/daycountconfidence): 2-minute check on whether your records would withstand scrutiny
- [Tax Risk Scorecard](https://scorecard.daysium.com/tax-risk-scorecard): Broader tax residency risk assessment
- [14-day free trial](https://scorecard.daysium.com/14-day-trial)