The UK 183-day rule: what it means for tax residency
Spending 183 days or more in the UK in a tax year makes you UK resident: it’s the first automatic UK test of the statutory residence test. But fewer than 183 days doesn’t make you non-resident — your home, your work and your ties can make you resident with far fewer.
The 183-day rule in the UK
The first automatic UK test of the statutory residence test: if you spend 183 days or more in the UK in a tax year, you’re UK resident for that year. With that many days, none of the automatic overseas tests can apply — they need fewer than 16, fewer than 46, or, for full-time work abroad, fewer than 91 days in the UK.
Why fewer than 183 days isn’t enough
The 183-day rule only works one way. Below 183 days:
- the automatic overseas tests can make you non-resident — fewer than 16 or 46 days, or full-time work abroad;
- the other automatic UK tests can make you resident — your only home in the UK, or full-time work in the UK;
- and if none of those settles it, the sufficient ties test weighs your UK ties against your days.
See how all three steps fit together in UK tax residency rules, and count your days with the UK days calculator.
How the 183 days are counted
- At midnight. A day counts if you’re in the UK at the end of it.
- In the tax year. From 6 April to 5 April; on 6 April the count starts again.
- Days without a midnight can count too under the deeming rule, if you were resident in one of the last 3 tax years, have at least 3 UK ties and spend more than 30 such days in the UK.
Worked example
You move to the UK on 6 April and stay. Every night counts: 6 April is day 1, and 5 October is day 183 — from then on, the first automatic UK test makes you resident for that tax year.
How FlySee counts it
FlySee counts the days you end in the UK — at midnight — in each tax year from 6 April. With the 183 marker, for someone moving to the UK, it shows the date you’ll reach 183; with the 16 or 46 marker, the days you have left under the automatic overseas tests. It doesn’t weigh your home, work or ties: whether you’re resident is for you and your adviser.