Tax Jurisdictions Available in the Daysium App

At Daysium, we help individuals and advisors navigate complex tax residency rules across multiple jurisdictions. Below is a quick overview of the tax jurisdictions currently supported in our app and what you need to know about their residency thresholds.

Last Updated 26 March 2025.

You’re a tax resident if you spend 183 days or more in Australia during the income year (not calendar year), even if not continuously. This includes your arrival and departure dates. To stay non-resident, you must not exceed 182 days.

You’re a tax resident if:

• You ordinarily reside in Hong Kong, or
• You’re present for 180+ days in a year, or 300+ days across two years

You’re tax resident if you spend:

• 183+ days in a single year, or
• 280+ days across two consecutive years (with 30-day minimum in either year)

You will not be considered resident if you’re in Ireland for 30 days or fewer in a tax year.

To be non-resident, stay under 183 days in one year and under 280 days over two.

To establish tax residency, you must spend 183+ days in Monaco within a rolling 12-month period. Residency is confirmed through the Carte de Résident and proof that Monaco is your primary home. You can read more about Monaco residency in our article ‘How to Become Resident in Monaco’.

The rule is simple, but hard to count manually:

90 days in any rolling 180-day period across the 27 Schengen countries. Every day you’re physically present counts, even partial days. Our app includes  open-border microstates like Andorra, Monaco, San Marino, and Vatican City to the Schengen Rule. You can learn more about Schengen in our article on Schengen travel.

You’re a tax resident if you’re physically present in Singapore for 183 days or more in a calendar year.

Tax residency is triggered if you spend more than 183 days in Spain in a calendar year.
Temporary absences generally still count unless you prove tax residence elsewhere.

You’re a tax resident if:

• Present in the UAE for 183+ days in a consecutive 12-month period, or
• Present for 90+ days in a consecutive 12-month period and meet additional criteria (e.g. employment, permanent home)

The UK uses the Statutory Residence Test (SRT) to determine tax residency. There are three parts: Automatic Overseas, Automatic UK, and the Sufficient Ties Test.

You are automatically UK tax resident if you:

• Spend 183+ days in the UK during the tax year.

You are automatically non-resident if:

• You spent fewer than 16 days in the UK and were UK resident in any of the previous 3 tax years,
• Or you spent fewer than 46 days and were not UK resident in any of the previous 3 tax years,
• Or you worked full-time overseas, and:
  • Spent fewer than 91 days in the UK,
  • Worked more than 3 hours on fewer than 31 UK days,
  • Had no significant break (31+ days without working or valid leave) from overseas work

If none of the above apply, the Sufficient Ties Test is used.

This test looks at your UK connections, including:

• Having a UK home
• Having a UK-based job
• Spending more time in the UK than any other country
• Having close family in the UK
• Spending significant time in the UK in recent years

The more ties you have, the fewer days you can spend in the UK before becoming a tax resident.

 These rules apply to both employees and the self-employed. Voluntary workers and transport workers (e.g., ships, planes) follow separate rules.

You can explore the UK SRT more through our case study.

You become tax resident if you stay in Vietnam for:

• 183+ days in a calendar year or
• Over any 12-month period from your arrival date