For Brits living abroad

How many days can you spend in the UK this tax year?

Answer 3 questions. See your limit under the Statutory Residence Test, the rules HMRC uses to decide if you are UK tax resident.

Free calculator

1. Were you UK tax resident in any of the last 3 tax years?

Yes, I left the UK recently No, not in any of the last 3

2. Which UK ties do you have this tax year?

Family tieYour spouse, civil partner, partner or a child under 18 is UK resident.

Accommodation tieYou have a UK place to stay for 91+ days in a row and you spend at least 1 night there. A close relative's home counts at 16+ nights.

Work tieYou work 3+ hours a day in the UK on 40 or more days.

90-day tieYou spent more than 90 days in the UK in either of the last 2 tax years.

Country tieThe UK is the country where you spend the most midnights this tax year.

3. Do you work full-time abroad for the whole tax year?

All 3 must be true: you work abroad 35+ hours a week on average, you have no gap of 31+ days without overseas work (leave does not count as a gap), and you work more than 3 hours in the UK on fewer than 31 days.

Yes, all 3 are true No, or not sure

Optional: UK days so far this tax year

Count midnights spent in the UK since 6 April.

You can spend up to

182 days

in the UK this tax year and stay non-resident under the day-count tests.

This is not tax advice. It covers the automatic overseas tests, the 183-day test and the sufficient ties test. It leaves out the only-home test, the full-time work in the UK test and split-year treatment. HMRC's guide is RDR3.

The app: your UK days, counted for you

A day count is easy to get wrong. One late flight home and a midnight lands in the wrong country. UK Residence Days keeps the count for you, all year.

Log each trip in seconds. Your phone's location fills gaps you forget.
Your UK days, your ties and your limit for the current tax year, on 1 screen.
A warning before a trip would take you over your limit.
A PDF of every day in and out of the UK, ready for your accountant or HMRC.

£49 for the first year, founding price

iPhone first. Launches by 31 January 2027, before the 2027-28 tax year starts on 6 April.

Pre-order for £49

You pay today and get the app the day it launches. If it has not launched by 31 January 2027, you get a full refund. You can ask for a refund at any time before launch: email mohed@atlasvision.io.

Questions

What counts as a UK day?

Usually, a day counts if you are in the UK at midnight at the end of it. Days in transit, where you do nothing else in the UK, do not count. If you have 3+ ties, were resident in 1 of the last 3 years, and have more than 30 days in the UK that end before midnight, the deeming rule counts those extra days too.

Why £49 now?

It is a founding price for the first year, and it tells us people want the app before we build all of it. The normal price will be higher.

Who makes this?

A small UK software company, Atlas Vision Innovations Ltd, in London.