About this site

Purpose of this site

The UK SRT Calculator is a free, independent tool that helps you estimate whether you are UK tax-resident for a given tax year under the Statutory Residence Test (SRT). Your residence status decides how the UK taxes your income and gains, so getting it right matters — especially for people moving in or out of the UK, or splitting time across countries.

The SRT is notoriously intricate: it combines automatic overseas tests, automatic UK tests, and a "sufficient ties" test where the number of days you can spend in the UK depends on how many ties you have. This tool walks through those steps and counts the days and ties for you.

How it works

The calculator runs entirely in your browser. It applies the SRT's order of tests — automatic overseas, automatic UK, then the ties test with its day thresholds — and shows your likely status. Split-year treatment and exceptional-circumstances day rules are simplified; HMRC guidance governs.

Independent and neutral

This is an independently operated site that builds simple tools to remove the friction from complex tax rules. We are not affiliated with HMRC, and the calculator does not collect or store your answers — everything is processed locally in your browser.

Before you rely on it

Residence can hinge on fine details and the result here is an informational estimate, not tax advice. Please review our disclaimer and confirm your position with HMRC guidance or a qualified UK tax adviser.