UK Statutory Residence Test: Track Your UK Days and Workdays with Our SRT Tracker
Working out whether you are UK tax resident can look deceptively simple. Count the number of days you spend in the UK, compare the total with a limit, and you have your answer. Unfortunately, the Statutory Residence Test is more nuanced than that, particularly for people who work internationally or move country during a tax year.
Your residence position can depend not only on how many days you spend in the UK, but also on how many days you work here, where you work, how long you work, whether you have breaks from overseas work and, in some cases, your UK ties. Our current guide to the UK Statutory Residence Test explains the rules in detail. This article focuses on something more practical: how to keep the evidence and monitor the limits while the year is still unfolding.
That is why we built the TaxTrends SRT Tracker: a practical residence and work-day diary for internationally mobile individuals. You can use it throughout the year, save your data, test future travel plans and move your records in and out using your own spreadsheet.
At a glance
The SRT Tracker helps you record the facts that can determine your UK residence position before they become a reconstruction exercise at the end of the year. Used regularly, it gives you a running picture of your UK days, workdays and overseas working pattern.
- Record days spent in the UK and overseas.
- Distinguish ordinary UK days from UK workdays of more than three hours.
- Track overseas work and periods of annual or sick leave.
- Monitor the thresholds relevant to full-time overseas work.
- Save your diary so you can return to it later.
- Enter future dates to simulate planned travel and working patterns before committing to them.
- Import and export spreadsheet data so you can keep your own copy, work with existing records or share the data with your adviser.
| What to record | Why it matters |
|---|---|
| UK presence at midnight | Most SRT day counting is based on whether you are in the UK at midnight, subject to specific exceptions. |
| UK work of more than 3 hours | Separate UK workday limits apply under several SRT tests. |
| Overseas workdays | Needed when relying on the full-time overseas test or certain split-year cases. |
| Annual, sick or parenting leave | Relevant when assessing whether there has been a significant break from work. |
| Travel notes and unusual circumstances | Useful evidence if the residence position later needs to be reconstructed or reviewed. |
Why simply counting UK days is not enough
The best-known SRT rule is the 183-day test. If you spend 183 days or more in the UK during a tax year, you are automatically UK resident. But residence can arise with substantially fewer than 183 days, depending on your circumstances and UK ties.
Conversely, somebody working full-time overseas can potentially remain non-UK resident while still spending a meaningful amount of time in Britain. Under the third automatic overseas test, the individual generally needs to work sufficient hours overseas, spend fewer than 91 days in the UK, have fewer than 31 UK workdays of more than three hours, and avoid a significant break from overseas work.
This is why the practical question is often not simply “How many UK days have I used?” Someone trying to break UK residence may simultaneously need to watch UK days, UK workdays and their pattern of overseas work.
What counts as a UK workday?
For several parts of the SRT, the three-hour threshold matters. A day on which you perform more than three hours of work in the UK can count as a UK workday even if the reason for your trip to Britain was primarily personal.
This information is much easier to capture when it happens than to reconstruct months later from emails, calendars and airline bookings. The tracker is designed to make that recording habit simple enough to maintain throughout the year.
How to use the SRT Tracker
1. Record where you are
Update the tracker as you travel rather than waiting until the end of the month or tax year. For most SRT day-counting purposes, whether you are in the UK at midnight is central, although special rules and exceptions can apply.
2. Record workdays separately
Location and work are not the same thing. If you are physically in the UK and work for more than three hours, record that as a UK workday. If you are relying on full-time overseas work, keep your overseas working pattern up to date as well.
3. Record leave and unusual periods
Annual leave, sick leave and parenting leave can matter when applying the significant-break rules. A significant break from overseas work can arise where at least 31 consecutive days pass without a qualifying overseas workday, subject to the statutory treatment of qualifying leave.
4. Save your data as you go
The tracker is designed to be used as a continuing diary rather than a one-off calculator. After entering your travel and work information, use the tracker's save function so that you can return later and continue from the same record instead of rebuilding the year from scratch.
5. Enter future dates to run simulations
You do not have to restrict the tracker to trips that have already happened. You can add planned future travel and working days to see how a proposed schedule would affect your UK day count, UK workday count and other monitored limits before you book or commit to it.
6. Import and export your own spreadsheet
If you already maintain travel records in a spreadsheet, you can import that data into the tracker rather than entering everything again manually. You can also export the tracker data back to a spreadsheet, giving you your own copy for backup, further analysis, record keeping or sharing with your accountant or tax adviser.
This also makes the tracker more useful over several tax years: the online diary can be your working tool, while the exported spreadsheet becomes part of your permanent residence records.
7. Watch the trend, not just today's number
A useful residence diary does more than tell you how many UK days have elapsed. It lets you see which thresholds are becoming tight before you book the next flight or agree to another UK working day, and the simulation feature makes that forward-looking planning much more practical.
Why the tracker matters even more in a split year
Moving into or out of the UK part-way through a tax year introduces another layer of complexity. The UK does not simply allow you to choose the date on which residence starts or ends: you first determine your residence status for the tax year and then consider whether one of the statutory split-year cases applies.
The permitted number of UK days and UK workdays during the overseas part of a split year can depend on the date the relevant period starts. If you are leaving or returning to the UK, our detailed guide to split-year treatment explains the eight cases and the main traps.
Good records are part of the tax planning
HMRC can ask how you established your residence status. Where full-time working tests are relevant, the underlying evidence may include work diaries, calendars, timesheets, travel records and details of leave. A tracker does not replace those documents, but it gives them structure and helps create a contemporaneous record.
This becomes particularly important when your tax treatment changes dramatically depending on residence. For example, new UK residents considering the Foreign Income and Gains regime first need to establish the relevant residence history correctly. Our FIG + Pension Optimiser then tackles the separate question of whether making a FIG claim is actually worthwhile.
What the SRT Tracker does not do
No tracker can turn the Statutory Residence Test into a pure day-counting exercise. Questions such as whether you have a UK home, whether accommodation creates an accommodation tie, where your family lives, your residence status in earlier years, exceptional circumstances and whether a particular split-year case applies can require a proper analysis of the legislation and your individual facts.
The tracker therefore does something slightly different and, in many cases, more useful: it helps you maintain the factual data needed to make that analysis properly. That makes subsequent advice faster, more reliable and less dependent on memory.
Do not discover your residence status in April
One of the worst times to calculate your SRT position is after the tax year has finished. By then, an extra UK trip cannot be cancelled, a UK workday cannot be undone and a problematic break from overseas work may already have occurred.
Residence planning works much better prospectively. Keep the diary up to date, save your data, model future travel before committing to it and export a copy of your records periodically. If you are preparing to leave the UK, our practical guide on moving from the UK to the UAE shows how residence fits into the wider tax-planning picture.
If your circumstances are more complicated, particularly if you are moving into or out of the UK, working internationally or relying on split-year treatment, TaxTrends can review the underlying residence analysis with you. Bringing a current tracker export to that review also gives us a much cleaner factual starting point.
