Count your UK days in the 6 April–5 April tax year and see which residence tests still need facts about your home, work or UK ties.
Add your stays
A day normally counts when you are in the UK at midnight. The below-46-day result assumes you were not UK resident in any of the previous three tax years.
Import or paste a travel list
Format: YYYY-MM-DD ~ YYYY-MM-DD XX with the two-letter code of a
country on this site, or a single day YYYY-MM-DD XX. This site's CSV exports can be
re-imported as-is.
Your saved stays
Calendar dates include both endpoints. The result above applies its own counting rule and removes overlapping dates.
Arrive 1 January 2026, depart 10 February 2026; choose tax year 2025/26.
40 midnight days count. If you were nonresident in all three previous tax years, this meets the below-46 overseas test; 5 further counted days stay below that threshold.
60 counted days: more facts needed
Arrive 1 January 2026, depart 2 March 2026; choose tax year 2025/26.
60 midnight days count. Dates alone do not decide residence: check other automatic tests, prior residence and UK ties. There is no unconditional “safe days left” figure.
How the UK rule works
The UK does not run on a single day threshold. At 183 or more counted days in a tax year, the automatic UK day test is met. Below 183, check the automatic overseas tests first: fewer than 46 days applies if you were nonresident in all three previous tax years, while fewer than 16 applies to prior residents. Other automatic tests depend on homes or full-time work. If no automatic test applies, use the sufficient ties test; travel dates alone cannot complete those checks.
UK counting is unusual: a day counts if you are present at the end of the day. The arrival day therefore counts, the departure day does not, and a same-day visit counts for nothing — arrive on 6 June and leave on 20 June and you are present at the end of 14 days, the 6th through the 19th. The UK tax year runs 6 April to 5 April, so winter trips land in a different tax year than summer ones.
If no automatic test decides the result, sufficient ties compares UK days with qualifying connections. For someone nonresident in all three prior tax years: 46–90 days requires all 4 ties, 91–120 requires 3, and 121–182 requires 2. For someone resident in at least one prior year: 16–45 days requires 4 ties, 46–90 requires 3, 91–120 requires 2, and 121–182 requires 1. The ties are family, accommodation, work, more than 90 UK days in either of the two prior years, and (for prior residents only) the country tie: the UK has the greatest midnight-presence total, including a joint maximum. HMRC definitions checked 2026-10-05; see the sufficient ties guide for conditions and examples.
Because ties are facts about your life — not your flights — a 46–182 day stay is genuinely undetermined by a day ledger alone. The calculator reports that band honestly as "unclear" rather than guessing.
Page guidance checked 2026-10-02
Finance Act 2013, Schedule 45, The Statutory Residence Test — paras 7 (183-day auto UK), 12–13 (auto overseas <16/<46), 18–19 (sufficient ties tables), 23 (deeming rule). Verified against source text 2026-09-30. — official text
HMRC Statutory Residence Test guidance, Formerly RDR3 — relocated to the Residence and FIG Regime Manual (2025-26 restructure) — official text
Every calculation above follows the cited publications. If a rule changes, the
verification date above is updated — pages with stale dates are flagged for re-verification.
What this calculator does not decide
This calculator assumes you were NOT a UK resident in any of the previous three tax years (the "arrivals" rules). If you were UK resident in one or more of the previous three tax years, the automatic overseas threshold drops to 16 days and the ties table is tighter — the outcome can differ.
Two other automatic UK tests are not modeled in this ledger: the statutory UK-home test and working full-time in the UK (365-day period, strictly more than 75% of qualifying workdays). Review the guided assessment at https://taxresidencydays.com/uk-srt-assessment/ for the additional facts.
The sufficient ties test cannot be computed from a day ledger: it turns on family, accommodation, substantive UK work, 90-day UK presence in previous years and the country with the greatest number of midnights (including a joint maximum). Review prior residence and these facts in the guided SRT assessment.
Days are counted under the UK end-of-day rule: a day counts if you were present at the end of it. Same-day arrivals and departures do not count; the arrival day counts but the departure day does not.
Split-year treatment (arriving or leaving part-way through a tax year) and treaty tie-breakers are not modeled.
Scottish and Welsh income tax rates differ, but the residency test is UK-wide.
How many days can I stay in the UK without becoming a tax resident?
If you were not UK resident in any of the previous three tax years, fewer than 46 counted days in a tax year (6 April–5 April) meets an automatic overseas test. At 46–182 days, check the other automatic tests for homes and work before the sufficient ties test. At 183 counted days or more, the automatic UK day test is met. There is no universal safe-day allowance below 183.
Does the day I arrive in the UK count?
Yes — but the departure day does not. UK counting asks whether you were present at the end of the day, so a same-day visit counts for nothing. A stay from 6 June to 20 June counts 14 days (6th–19th).
Why does the calculator use the tax year ending 5 April?
The Statutory Residence Test runs over the UK tax year, 6 April to 5 April. A trip in December 2025 and a trip in February 2026 both fall in the tax year ending 5 April 2026 — while a calendar-year tool would split them.
I was UK resident a few years ago. Does that change things?
Yes. If you were UK resident in any of the previous three tax years, the automatic overseas threshold tightens from 46 to 16 days and the ties table is stricter. This calculator assumes the arrivals rules; if you are a "leaver", take advice before relying on the result.
Why is there no safe-days allowance between 46 and 182 days?
The outcome needs more than travel dates. Other automatic tests can depend on homes or full-time work. If none applies, the sufficient ties test considers family, accommodation, work and earlier UK presence; prior residents also have a country tie. The calculator lists the missing facts rather than giving a guaranteed allowance.
Informational only — not tax advice. Based on the published day-counting tests, the calculator tells you
what appears to follow. Qualifying facts require your own evidence; the tool does not verify housing, family, employment or treaty claims.
Confirm with a qualified cross-border tax adviser.