Real Estate and Property in United Kingdom: Stamp Duty Land Tax on Purchase

Real Estate and Property in United Kingdom: Stamp Duty Land Tax on Purchase

This Guide covers Stamp Duty Land Tax (SDLT) on the purchase of residential property in England and Northern Ireland — the standard bands, the additional-dwellings surcharge landlords need to plan around, and the reliefs that actually apply versus the ones that get assumed. Figures are for transactions with an effective date (normally completion) on or after 1 April 2025.

Who this is for

Individual buyers and their advisers purchasing residential property in England or Northern Ireland — including landlords buying an additional property (buy-to-let), first-time buyers, and non-UK residents. It does not cover Scotland (Land and Buildings Transaction Tax) or Wales (Land Transaction Tax), which operate as separate taxes with their own bands, nor non-residential or mixed-use property, which has a different threshold and rate structure.

Before you start, ask the client

• Will this be the only residential property worth £40,000 or more they own anywhere in the world, after completion?
• Are they replacing a main residence they've already sold, or still own alongside this purchase? (Determines whether the additional-dwellings surcharge applies or can later be reclaimed.)
• Is this their first property purchase, and is the price at or below £625,000? (Determines first-time buyer relief eligibility.)
• Have they spent fewer than 183 days in the UK in the 12 months before the purchase? (Determines UK residence status for the 2% surcharge.)
• Is the purchase completing as an individual, or through a company or other non-natural person? (The 17% flat rate can apply to certain corporate purchases of dwellings over £500,000.)

The method, step by step

1. Establish the purchase price and confirm this is a residential (not non-residential or mixed-use) transaction — the bands and thresholds are entirely different, and non-residential/mixed-use has a lower £150,000 starting threshold.
2. Compute the standard SDLT on a slice basis: each portion of the price is taxed at its own band's rate, not the whole price at one rate. This is the step most often gotten wrong by hand — always work band by band, never apply a single rate to the full price.
3. Check whether the higher rate for additional dwellings applies. It applies at £40,000 or more where, after the purchase, it will not be the buyer's only residential property worth £40,000 or more anywhere in the world, the previous main home hasn't been sold, and no one else holds a lease with more than 21 years left. Where it applies, add 5 percentage points to every band.
4. If the buyer is replacing a main residence and hasn't yet sold the old one at completion, the higher rate still applies at the point of purchase — but a refund can be claimed if the previous main residence is sold within 36 months of completing the new purchase. Flag this refund window to the client immediately; it gets missed constantly once the transaction is behind them.
5. Check first-time buyer relief only if the price doesn't exceed £625,000. Below that, 0% applies up to £300,000, with standard rates on the portion up to £500,000. Above £625,000, relief doesn't apply at all — standard rates apply to the full price, not a partial version of the relief.
6. Confirm UK residence status. A buyer not present in the UK for at least 183 days in the 12 months before the purchase is "not a UK resident" for SDLT purposes and pays an extra 2% surcharge on top of all other applicable rates — this stacks with the additional-dwellings surcharge if both apply.
7. If the buyer is a company or other non-natural person, check whether the 17% flat rate applies to dwellings costing more than £500,000 — this is a flat rate on the whole price, not a banded calculation, and is a materially different computation from the individual buyer route.
8. File the SDLT return and arrange payment within 14 days of the effective date (normally completion) — this is a hard deadline with interest and penalties for late filing, and in practice the solicitor handles this, but the accountant should confirm it's been done, not assume it.

The traps

• Applying the whole purchase price to a single band instead of computing tax on a slice basis — this consistently overstates the liability.
• Forgetting the additional-dwellings surcharge applies at £40,000, not some higher round-number threshold — a modest second property purchase is still caught.
• Assuming first-time buyer relief scales down gracefully above £625,000 — it doesn't; above that price, relief disappears entirely and standard rates apply to the full amount.
• Missing the 36-month refund window when a client pays the higher rate on a genuine main-residence replacement because their old home hadn't sold yet at completion.
• Treating the non-resident 2% surcharge and the additional-dwellings 5% surcharge as alternatives rather than stacking them when both conditions are met.
• Missing that Multiple Dwellings Relief was abolished for transactions from 1 June 2024 (transitional relief only for contracts exchanged on or before 6 March 2024) — portfolio landlords can no longer average the price across multiple units in one transaction.

Rates, thresholds and deadlines

Rates, thresholds and deadlines (https://www.gov.uk/stamp-duty-land-tax/residential-property-rates)

What	Value	Source
Standard residential SDLT bands (from 1 April 2025)	0% up to £125,000; 2% £125,001–£250,000; 5% £250,001–£925,000; 10% £925,001–£1,500,000; 12% over £1,500,000	https://www.gov.uk/stamp-duty-land-tax/residential-property-rates
Higher rate for additional dwellings	+5 percentage points on every band, applies at £40,000+ (raised from 3% on 31 October 2024)	https://www.gov.uk/guidance/stamp-duty-land-tax-buying-an-additional-residential-property
Non-UK resident surcharge	+2 percentage points on top of all other applicable rates	https://www.gov.uk/guidance/rates-of-stamp-duty-land-tax-for-non-uk-residents
First-time buyer relief	0% up to £300,000; standard rates on the portion up to £500,000; no relief if price exceeds £625,000	https://www.gov.uk/stamp-duty-land-tax/residential-property-rates
Flat rate for certain non-natural persons (companies etc.)	17% on dwellings over £500,000 (raised from 15% on 31 October 2024)	https://www.gov.uk/government/publications/rates-and-allowances-stamp-duty-land-tax/stamp-duty-land-tax-rates-31-october-2024-to-31-march-2025
Non-residential/mixed-use threshold	SDLT applies from £150,000	https://www.gov.uk/stamp-duty-land-tax/nonresidential-and-mixed-rates
Filing and payment deadline	14 days from the effective date (normally completion)	https://www.gov.uk/stamp-duty-land-tax
Multiple Dwellings Relief	Abolished from 1 June 2024 (transitional relief only for contracts exchanged on or before 6 March 2024)	https://www.gov.uk/government/publications/rates-and-allowances-stamp-duty-land-tax/stamp-duty-land-tax-rates-31-october-2024-to-31-march-2025

Worked example

A buyer purchases a residential buy-to-let for £500,000 in April 2026, already owning their main home.

Sources

Sources

• HM Revenue & Customs, Stamp Duty Land Tax: Residential property rates — https://www.gov.uk/stamp-duty-land-tax/residential-property-rates - HM Revenue & Customs, Higher rates of Stamp Duty Land Tax — https://www.gov.uk/guidance/stamp-duty-land-tax-buying-an-additional-residential-property - HM Revenue & Customs, Rates of Stamp Duty Land Tax for non-UK residents — https://www.gov.uk/guidance/rates-of-stamp-duty-land-tax-for-non-uk-residents - HM Revenue & Customs, Stamp Duty Land Tax rates: 31 October 2024 to 31 March 2025 — https://www.gov.uk/government/publications/rates-and-allowances-stamp-duty-land-tax/stamp-duty-land-tax-rates-31-october-2024-to-31-march-2025 - HM Revenue & Customs, Stamp Duty Land Tax: Rates for non-residential and mixed land and property — https://www.gov.uk/stamp-duty-land-tax/nonresidential-and-mixed-rates Working paper aid only — confirm every figure against the current gov.uk publication before filing, and have this reviewed and signed off by a chartered accountant or licensed tax adviser before acting on it.

Contributed by Nadir Khan.