How many days can I spend in the UK without becoming tax resident?

It depends on your circumstances. 183+ days makes you automatically UK resident. Below that, HMRC's Statutory Residence Test decides via the automatic overseas tests, automatic UK tests, then the sufficient ties test. With a home, work or family in the UK your limit can fall to 120, 90, 45 or even 15 days. This tool estimates your day ceiling; it is educational and not tax advice.

Does the 183-day rule mean I'm safe under 183 days?

No. 183 days makes you automatically resident, but you can become UK resident on far fewer days through the automatic UK tests or the sufficient ties test. 183 is a ceiling, not a safe zone.

What is the UK Statutory Residence Test (SRT)?

HMRC's test for whether you are UK tax resident in a tax year. Applied in order: automatic overseas tests, automatic UK tests, then sufficient ties, stopping as soon as one gives an answer. See HMRC guidance RDR3.

What counts as a UK tie?

Five ties: a UK-resident spouse, civil partner or cohabiting partner, or minor child; available UK accommodation you use (16+ nights if a close relative's home); 40+ UK workdays; more than 90 UK days (91+) in either of the last two tax years; and, for leavers, spending the most days in the UK. The more ties, the fewer days before you become resident.

Free tool

How many days can you really spend in the UK?

"Under 183 days is safe" is the myth that gets people caught. Answer a few plain questions and we'll walk you through HMRC's Statutory Residence Test in its exact order — stopping the moment a test decides — and land on your real day ceiling.

Follows HMRC's RDR3 Statutory Residence Test guidance — last updated 11 June 2026. HMRC changes it unannounced; Nomad Pro watches that page and flags changes.

Not tax or legal advice. An educational walkthrough of the day-count and ties factors — it doesn't give a residence determination or replace an accountant. It does the tedious groundwork so you (and any adviser) start from a clear, measurable picture.

1 · Overseas

2 · Automatic UK

3 · Ties

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

Why this matters & how to know

UK tax years run 6 April → 5 April. This sets your escape-hatch threshold: 16 days if you were resident in any of the last 3 years, 46 days if you were resident in none. How to know: did you file UK returns as resident, or spend most of those years here? If you only left the UK recently, you were almost certainly resident in the prior years — a leaver.

Roughly how many days will you spend in the UK this tax year?

A "day" is generally being in the UK at midnight. Drag or type — everything below updates live.

Test 1 · your escape hatch

Automatic overseas tests

Do you work full-time, mostly overseas? (the third overseas test)

What "full-time overseas" requires

All must hold: you work full-time overseas across the year, spend fewer than 91 days in the UK, have fewer than 31 UK days working 3+ hours, and take no significant break (31+ days with no 3-hour overseas workday, ignoring annual, sick or parenting leave). A remote worker abroad usually qualifies; a long UK stretch breaks it. This tool takes your answer at face value — it can’t check HMRC’s “sufficient hours” working-time formula for you, so confirm that separately.

"…non-UK resident if you were resident in the UK for one or more of the 3 tax years before … and spend fewer than 16 days." / "…resident in none of the 3 tax years before … and spend fewer than 46 days."HMRC RDR3

Test 2 · the trap

Automatic UK tests

What HMRC means by "a home" (the one that trips people)

Not about ownership. A "home" is a place you use with enough permanence to live in. You're caught by the home test only if, in a 91-day stretch (30+ of it this tax year), you had a UK home you were in 30+ days and either no overseas home or you spent fewer than 30 days at an overseas home that year.

Worked example. Family home in Switzerland (30+ days there), and in the UK you stay at your parents'. You have an overseas home you use 30+ days → this test does not catch you. The parents' place is handled under the accommodation tie below — different test, lower threshold.

Second automatic UK test turns on a 91-day UK-home period, 30+ of those days in the year, present 30+ days, with no overseas home (or under 30 days at one).HMRC RDR3 · this tool flags it rather than fully resolving it

Test 3 · where most people land

Sufficient ties

The more UK ties you have, the fewer days you can spend before you're resident. Answer these — we'll count them for you.

A UK-resident husband/wife/civil partner, or a child under 18 you see in the UK?

Family tie — what counts

A UK-resident spouse or civil partner (unless separated), a partner you live with as if married or in a civil partnership, or a minor child (under 18) who is UK resident and whom you see on 61+ UK days. Not parents, siblings, adult children or friends. "Does my sister count?" No — spouse/civil partner or minor child only.

Somewhere in the UK available to you to stay (your own place, or a relative's) that you actually use?

Accommodation tie — the parents'-flat question

A place available for a continuous 91-day period where you spend 1+ night. Close-relative rule: if it's a parent/grandparent/sibling/adult child's home, it's only a tie if you spend 16+ nights there in the year.

Your case: no UK property of your own, you stay at your parents', home in Switzerland → set Yes only if you'll hit 16+ nights at your parents' this year.

Will you work 3+ hours a day in the UK on 40 or more days this tax year?

Work tie

More than 3 hours of work in the UK on 40+ days (not necessarily consecutive) — including remote work for a foreign employer while you're physically here.

Did you spend more than 90 days (91+) in the UK in either of the last two tax years?

90-day tie

More than 90 days (91+) in the UK in one or both of the two tax years before this one. Exactly 90 does not count. If you only left the UK recently you almost certainly have this for a year or two.

Will the UK be the country you spend the most days in this tax year?

Country tie — leavers only

A tie if the UK is the single country where you're present at midnight on the most days this year. Only applies to leavers. More nights in Switzerland than the UK → this tie doesn't apply.

Ties counted: 1

What this deliberately doesn't do

It estimates the day-count and ties factors. It doesn't fully resolve the "home" and full-time-UK-work automatic tests, exceptional-circumstances days, the deeming rule, or split-year treatment, and isn't a residence determination. Always check the current HMRC RDR3 guidance and a qualified adviser before acting.

Hopping around Europe too? The Schengen 90/180 rule is separate — use the official EU short-stay calculator. Nomad Pro tracks both together.

The real nightmare is doing this by hand, all year 🧭

This is a snapshot. Nomad Pro logs your days as you go, applies these exact tests live, and — because HMRC changes the rules unannounced — watches that RDR3 page and tells you the moment it changes.

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Based on HMRC RDR3 guidance (last updated 11 June 2026) · Educational estimate only · Not tax, legal or financial advice · Not affiliated with HMRC · Confirm with current HMRC guidance and a qualified adviser before acting.