The 183-Day Residency Test for Stamp Duty
How HMRC determines whether you pay the 2% non-resident surcharge — and exactly how to count your days.
In this article
Key Takeaways
- The 183-day test is the only measure HMRC uses to determine UK residence for SDLT. Nationality, citizenship, visa status, and income tax residence are all irrelevant.
- You are "present" in the UK on any day you are in the UK at midnight. Arrival and departure days can each count as a full day of presence.
- The test window is the 12 months ending on the day before completion. Within that window, find any continuous 365-day period where you were present for 183+ days.
- If either buyer in a joint purchase is non-resident, the 2% surcharge applies to the entire transaction — not just their share.
- Married couples or civil partners are treated as jointly resident if one spouse is UK resident, provided they are not separated. This can protect the non-resident spouse from the 2% surcharge.
- Companies controlled by non-UK residents (close companies) follow specific rules. The 2% surcharge applies unless the company itself meets special residence criteria.
- Failing the 183-day test by even one day means you pay the full 2% surcharge on the complete purchase price, which on a £500,000 property equals £10,000 extra.
183 days
Minimum UK presence
365 days
Rolling window
+2%
Surcharge if non-resident
Midnight
End-of-day rule
What Is the 183-Day Residency Test?
When you buy residential property in England or Northern Ireland, HMRC checks whether you are a UK resident or a non-UK resident. If you are non-resident, a 2% surcharge applies on top of all other SDLT rates. The only test HMRC uses is the 183-day physical presence test.
According to GOV.UK guidance on SDLT for non-UK residents, you qualify as UK resident if, in any continuous 365-day period that falls within the 12 months ending on the day before your completion date, you were physically present in the UK for at least 183 days.
The Legal Test in Plain English
- Identify the 12 months ending on the day before completion.
- Within those 12 months, look for any rolling 365-day window.
- If you were in the UK for 183+ days in that window, you are UK resident — no surcharge.
- If no such window exists, you are non-resident — 2% surcharge applies.
This means even buyers who spend significant time in the UK but fail to hit 183 days in any single 365-day window within the look-back period will be treated as non-resident. The threshold is absolute — 182 days and you pay the surcharge, 183 days and you do not.
What Counts as "Present" in the UK?
The HMRC internal manual SDLTM09880 sets out the precise meaning of "present." You are counted as present in the UK on a given day if you are in the UK at the end of that day — that is, at midnight.
| Day Type | Counts as UK Present? | Notes |
|---|---|---|
| Arrival day (before midnight) | Yes | You are in UK at midnight = counts |
| Departure day | Yes | You were in UK at midnight the night before |
| Transit through UK (overnight) | Yes | In UK at midnight counts |
| Transit through UK (same day, no midnight) | No | Left before midnight — not present at end of day |
| Day entirely abroad | No | Not in UK at midnight |
Important: Midnight Rule
If you fly into London at 10pm and fly out at 2am the next day, you are in the UK at midnight on the day of arrival. That counts as one day of presence. The following day (when you departed at 2am) does not count, because you were not in the UK at the end of that day (midnight).
Day Counter Tool
Enter your completion date and estimated UK days to see whether you pass the 183-day test. Optionally add a property price to see the surcharge cost.
183-Day Residency Counter
The date your property purchase legally completes.
Total days you were present in the UK at midnight, within the 12-month window ending the day before completion.
If provided, we will calculate the 2% surcharge cost.
Worked Day-Counting Example
Sarah is an Australian living in Sydney. She completes the purchase of a £450,000 London flat on 15 March 2026. HMRC looks back at the 12 months ending 14 March 2026 (15 March 2025 – 14 March 2026) and checks for any 365-day window within that period where Sarah spent 183+ days in the UK.
| Period | UK Days | Result |
|---|---|---|
| Jan 2025 – Dec 2025 (holidays + work visits: 90 days) | 90 | Fails (below 183) |
| Mar 2025 – Feb 2026 (same pattern: 92 days) | 92 | Fails (below 183) |
| Best consecutive 365-day window found | 92 | Non-Resident |
Sarah's Stamp Duty Bill: £450,000 Purchase
As UK Resident (0 surcharge)
As Non-Resident (+2% surcharge)
The 2% surcharge costs Sarah an extra £9,000 (2% × £450,000). She could reclaim this later if she relocates to the UK and meets the 183-day test within 2 years of completion. See our expat surcharge reclaim guide for details.
Now consider James, a British citizen who moved to Singapore for work but spends summers in London. He completes on a £600,000 property on 1 June 2026. In the look-back window, he finds a 365-day window (June 2025 – May 2026) in which he spent 190 days in the UK — covering summer plus several extended visits. He passes the test. No surcharge.
James's Stamp Duty Bill: £600,000 Purchase — UK Resident
Had James failed the test, his bill would have been £29,500 — an extra £12,000. Counting your days carefully before exchange of contracts can save significant money.
What Does NOT Affect Your Residency Status
This is where many buyers are caught out. The GOV.UK guidance is explicit: "Nationality, citizenship or residence status under UK Statutory Residence Test are not relevant" for SDLT purposes.
| Factor | Relevant for SDLT? | Why |
|---|---|---|
| 183-day physical presence | Yes — only this | The sole test HMRC applies |
| British/UK citizenship | No | Nationality is irrelevant |
| Visa or right to reside | No | See visa holders guide |
| UK Statutory Residence Test (income tax) | No | Separate test — irrelevant for SDLT |
| UK domicile | No | Domicile rules do not apply |
| Where you pay income tax | No | Tax residency is a separate matter |
| Home country or country of birth | No | Only UK physical presence matters |
This means a British passport holder who has lived in Hong Kong for 10 years and visits the UK for 80 days a year is treated as non-resident for SDLT. Conversely, a foreign national on a student visa who spends 200 days in the UK is treated as UK resident — no surcharge. For more on how visa status interacts, see our visa holders stamp duty guide. For dual citizens, see our dual nationality stamp duty page.
How the 2% Surcharge Adds Up
The 2% non-resident surcharge applies to the entire purchase price, stacking on top of all standard bands. Here is what failing the 183-day test costs at different price points:
| Property Price | UK Resident SDLT | Non-Resident SDLT | Surcharge Cost |
|---|---|---|---|
| £300,000 | £2,500 | £8,500 | +£6,000 |
| £450,000 | £10,000 | £19,000 | +£9,000 |
| £600,000 | £17,500 | £29,500 | +£12,000 |
| £1,000,000 | £41,250 | £61,250 | +£20,000 |
| £2,000,000 | £153,750 | £193,750 | +£40,000 |
Use our non-resident buyer calculator for a precise breakdown at any price. For the full non-resident surcharge picture, see the non-resident complete guide.
Joint Purchases and the Spouse Rule
Joint Buyers: One Non-Resident = Full Surcharge
If any buyer in a joint purchase is non-UK resident, the 2% surcharge applies to the entire transaction. It is not applied proportionally to the non-resident's share. A couple where one partner lives abroad means both pay the full surcharge.
Exception: The Spouse/Civil Partner Rule
There is a limited exception for married couples and civil partners. Under HMRC guidance, if one spouse is UK resident (meets the 183-day test) and they are not separated, both are treated as UK resident for the purpose of the surcharge test — even if the other spouse has spent fewer than 183 days in the UK.
Conditions: The couple must be legally married or in a civil partnership, not separated under a court order or formal deed of separation, and not otherwise living apart.
Example: Priya (UK resident, 200 UK days) and her husband Raj (non-resident, 60 UK days) buy a £500,000 property together. Because Priya meets the 183-day test and they are married and not separated, both are treated as UK resident. No 2% surcharge. Total SDLT: £12,500 (not £22,500). Timing your purchase around a spouse's residency status can therefore make a material difference.
Close Companies and Non-Residents
Where a company buys residential property, different rules apply. The 183-day test does not apply to companies directly. Instead, HMRC looks at whether the company is a close company controlled by non-UK residents.
Close Companies: When the 2% Surcharge Applies
A close company is broadly one controlled by five or fewer participators. If a close company is itself controlled by non-UK residents, HMRC treats the company as non-resident for surcharge purposes. The 2% surcharge then applies to the company's residential property purchase.
For corporate purchases of properties over £500,000, the flat 17% SDLT rate already incorporates surcharge-equivalent amounts. See the corporate buyer guide for full details.
How to Prove UK Residence to HMRC
If you believe you pass the 183-day test, you should be prepared to substantiate your day count in case HMRC questions your return. Useful evidence includes:
- Passport stamps and e-gate records showing entry and exit dates
- Flight booking confirmations and boarding passes
- UK bank account transaction history showing UK ATM/card use by date
- Mobile phone records or GPS data showing UK location
- Work attendance records, payslips, or employer letters
- Hotel or rental accommodation invoices for UK stays
- GP, dental, or NHS records showing UK visits
- Utility bills or council tax records for any UK property
Practical Tip: Keep a Day-Count Log
If you are approaching the 183-day threshold, maintain a running log of each day you are in the UK at midnight. A simple spreadsheet with date, location at midnight, and supporting evidence (e.g., flight reference) is sufficient. Review your count before exchange of contracts, when you can still adjust your timing if needed.
Sources
Frequently Asked Questions
How exactly is the 183-day window calculated for stamp duty?
HMRC looks at the 12 months ending on the day before your completion date. Within that 12-month period, you look for any continuous 365-day window in which you were present in the UK for 183 or more days. "Present" means being in the UK at the end of the day (midnight). If any such 365-day window exists within the 12-month look-back, you pass the test and are treated as UK resident — no 2% surcharge applies.
Does my nationality or passport affect whether I pay the surcharge?
No. HMRC explicitly states that nationality and citizenship are irrelevant for the SDLT non-resident surcharge. A British citizen living in Australia who spends only 90 days in the UK will pay the 2% surcharge. An American citizen on a work visa who spends 200 days in the UK will not. Only physical presence in the UK matters.
If my spouse is UK resident, do I still pay the surcharge?
Not if you are buying jointly. If you and your spouse or civil partner are buying together, and your spouse passes the 183-day test, you are both treated as UK resident — provided you are not separated. The surcharge does not apply to your joint purchase. However, if you are buying in your name alone and do not pass the test yourself, you would still pay the surcharge.
Can I delay completion to accumulate more UK days?
In theory yes — if you are close to 183 days but have not yet reached the threshold, delaying completion by a few weeks (if both parties agree) could allow you to pass the test and avoid the surcharge. Each day of delay that you spend in the UK adds to your count. On a £500,000 property, avoiding the 2% surcharge is worth £10,000 — more than enough reason to discuss timing with your solicitor and the seller.
Does the 183-day test differ from the income tax Statutory Residence Test?
Yes, they are entirely separate. The income tax Statutory Residence Test involves multiple factors including automatic UK tests, automatic overseas tests, and sufficient ties tests. The SDLT residency test uses only physical presence at midnight. You could be UK resident for income tax but non-resident for SDLT (or vice versa). Always check the SDLT test specifically before relying on your income tax status.
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Emma Richardson, MRICS
Chartered Surveyor & Property Tax Specialist
Emma Richardson is a RICS-qualified Chartered Surveyor with over 12 years of experience in UK property taxation. She founded Stamp Duty Calculator to help buyers understand the complex world of property transaction taxes.