Your best defence in an HMRC residency enquiry isn't your day count — it's your documentation
Most residency advice stops at the arithmetic: count your days, stay under the line. That's necessary — but it's not what protects you if HMRC comes asking.
The burden of proof is on you
Here's the part the tax profession states plainly: the burden of proving your residence position falls on you, not HMRC. As one set of tax chambers puts it, "the burden of proof typically falls on the taxpayer to demonstrate their whereabouts, making contemporary record-keeping essential." If HMRC ever questions your status, you are the one who has to substantiate it — and someone who can produce a dated, consistent record kept as they went is in a completely different position from someone reconstructing a year from memory. (Good records also evidence that you took "reasonable care," which directly reduces any penalty if your position is later found to be wrong.)
Day-counting is table stakes. The paper trail is the asset.
That reframes the whole problem. Day-counting is table stakes. The real asset is a paper trail:
- A day-by-day location record you kept as you went, not backfilled in a panic.
- The context that matters for the tests — were you working, where was your home, when did your circumstances change.
- Something you can export — a PDF or spreadsheet of your year — and hand to HMRC or your accountant that says, plainly: I've tracked this, I've thought about it, here's my year.
None of this is glamorous. But it's the difference between a stressful enquiry and a short one. HMRC's rules are vague enough that interpretation matters — and the person with contemporaneous records is the person whose interpretation holds up.
Where to start
That's the entire idea behind Nomad Pro: a few seconds a day of logging, so that at any moment you can prove your location and your reasoning. Before you can document your position, though, you need to know what it is — start with the pillar guide, Am I a UK tax resident?, and run your actual situation through the free walkthrough: How many days can you spend in the UK →
Not tax advice — but good records are the one thing everyone, including HMRC, agrees you should keep.
Sources
- HMRC — RDR3 Statutory Residence Test guidance (gov.uk)
- Del Canto Chambers — burden of proof & record-keeping
- Tax Adviser (CIOT) — keeping SRT records
- PKF — record-keeping in an SRT tribunal case
Confirm your position with current HMRC guidance and a qualified adviser before acting.