The Statutory Residence Test runs on facts you are expected to have counted at the time. Nobody reconstructs four years of travel from memory — and the burden of proof sits with you, not HMRC.
Residence disputes are unusual among tax arguments in that they turn almost entirely on facts rather than on law. The rules are mechanical: days, ties, work patterns, homes. The difficulty is that the facts are historic, granular and easy to lose, and the person who has to produce them is you. An enquiry opened three years after you left will ask for the day count of the year you left, and "roughly a fortnight, I think" is not an answer.
What an Enquiry Actually Asks For
- A day-by-day record of UK presence, with the midnight rule applied consistently rather than approximately.
- Evidence behind the days — travel bookings, boarding passes, passport stamps where they exist, card transactions that place you somewhere.
- Where work was physically performed, which is a separate question from who paid you and from where the contract sits.
- Accommodation: what you had available in the UK, whether you stayed in it, and for how many nights.
- Connections in your new country: a lease or deed, local registration, utility accounts, a bank account, schooling, a local tax filing.
Contemporaneous beats reconstructed, every time. A dated spreadsheet kept as you went is worth far more than a carefully assembled reconstruction, because it was written before you knew it mattered. Keep it boring and keep it current.
Build the File Before You Leave, Not After
- Start a travel log on the day you decide to go. Date in, date out, purpose, whether you worked. One row per trip.
- Save the departure artefacts: the final payslip, the P45, the tenancy termination or completion statement, the shipping or removals invoice.
- Register properly at the other end and keep the confirmations. Local tax registration is the strongest single piece of evidence that you landed somewhere real.
- Keep foreign tax returns and payment receipts. They also do double duty for treaty relief — see claiming credit abroad.
- Keep it for years, not months. Enquiry windows are long and residence questions surface late, often triggered by something else entirely.
The Weak Spots
| Weak spot | Why it fails | What fixes it |
|---|---|---|
| UK house kept "for family" | Available accommodation is a tie regardless of use | Nights-stayed log, or genuinely letting it out |
| Remote work done on UK visits | UK workdays count even on holiday | Diary showing work and non-work days |
| Frequent short trips | Days accumulate faster than people believe | Running total, not an annual reckoning |
| No local registration abroad | Looks like you never really left | Residency card, local tax number, lease |
| Everything still addressed to the UK | Suggests the centre of life never moved | Move bank, insurance and correspondence over |
Why This Matters More Than the Test Itself
The rules in the Statutory Residence Test are public and, once you sit down with them, not especially hard. The risk is almost never that you misread the test. It is that you cannot demonstrate which side of it you fell on. That asymmetry is why a plain spreadsheet is one of the highest-value things anyone leaving the UK does, and why the people who get into trouble are usually the ones with the least paperwork rather than the most aggressive planning.
Where the Evidence Also Earns Its Keep
The same file supports a split-year claim, backs the residence pages on your SA109, and answers the questions a bank or lender asks when you apply for an expat mortgage. It is built once and used repeatedly, which is a better argument for keeping it than the enquiry that may never come.
Frequently Asked Questions
Who has to prove my residence status, me or HMRC?
In practice you do. You are making a claim on your return that you were not resident, and the facts supporting it are entirely within your own knowledge and records.
How many years should I keep travel records for?
Longer than feels necessary. Enquiry windows run for years and residence questions frequently surface late, often as a side effect of some other query, so treat the departure file as permanent rather than as something to clear out.
Do days I was only in the UK during the day count?
The basic rule counts days where you are in the UK at midnight, but there is a further rule that can bring daytime-only days into the count once they pass a threshold. That is exactly why the log should record arrival and departure times, not just dates.
Is a foreign tax return good evidence?
It is among the best. Filing and paying tax somewhere else shows another authority accepted you as resident there, and it is also the document you need for treaty credit claims.
Related Guides
Keep reading with these related guides and calculators:
- Becoming non-resident — the test the evidence feeds
- SA109 — where the facts are declared
- Split-year cases — the claim your dates support
- Keeping a UK home — the most common weak spot
- Credit in your new country — the same documents, reused
Check your take home pay
See exactly what you'll earn after tax with our free calculator.
Calculate Your Take Home Pay →