This calculator works out the Stamp Duty Land Tax (SDLT) due on a buy-to-let or additional residential property purchase in England or Northern Ireland. It applies the additional property surcharge that applies when a buyer already owns other residential property. The result shows the tax at each rate band and the total due at both standard and additional-property rates, so the surcharge cost is visible as a separate figure.
How to use this tool
- Enter the property purchase price.
- Select whether this is an additional residential property or a buy-to-let purchase.
- Select whether you already own other residential property in the UK.
- The SDLT breakdown by band and the total will appear below.
Understanding your results
SDLT applies in bands, using the same mechanism as income tax. Each rate applies only to the portion of the purchase price that falls within that band, not to the full price. For example, on a £400,000 purchase the first £250,000 falls in the nil-rate band and attracts no tax. The remaining £150,000 is taxed at the rate applying to that band.
The additional property surcharge adds a fixed number of percentage points to each band for buyers who already own residential property in the UK. Where the calculator shows both a standard rate total and a buy-to-let total, the difference between the two is the cost of the surcharge for your purchase price.
The effective rate is the total SDLT expressed as a percentage of the purchase price. It is useful when comparing acquisition costs across different properties or purchase prices.
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Legal context
Stamp Duty Land Tax applies to residential property purchases in England and Northern Ireland. The additional property surcharge was introduced in April 2016 and applies where a buyer owns or will own more than one residential property. The surcharge rate was increased from 3 per cent to 5 per cent in the Autumn Budget of October 2024. Wales uses Land Transaction Tax (LTT) instead of SDLT; Scotland uses Land and Buildings Transaction Tax (LBTT). This calculator does not cover purchases in Wales or Scotland. SDLT thresholds and rates are set by HM Revenue and Customs and can change at each Autumn Budget or Spring Statement. Verify current rates at gov.uk/stamp-duty-land-tax before making any financial decision.
Frequently asked questions
What is the Stamp Duty Land Tax additional property surcharge?
The additional property surcharge applies when a buyer already owns one or more residential properties anywhere in the UK and purchases another. From 31 October 2024, the surcharge increased from 3 per cent to 5 per cent of the full purchase price at each SDLT band, following the Autumn Budget 2024. The surcharge applies on top of the standard SDLT rates, so a buy-to-let purchase incurs higher tax than a first or sole residential purchase.
Does Stamp Duty Land Tax apply in Scotland and Wales?
No. SDLT applies only in England and Northern Ireland. Scotland uses Land and Buildings Transaction Tax (LBTT), administered by Revenue Scotland. Wales uses Land Transaction Tax (LTT), administered by the Welsh Revenue Authority. Both have their own rates, bands, and surcharges for additional properties. If you are buying in Scotland or Wales, use the respective government calculators for those taxes.
What first-time buyer relief is available on SDLT?
First-time buyers in England and Northern Ireland pay no SDLT on the first £300,000 of a purchase and 5 per cent on the portion between £300,001 and £500,000. The relief is not available on purchases above £500,000. To qualify, you must never have owned a residential property anywhere in the world, and all buyers named on the purchase must be first-time buyers. The additional property surcharge does not apply to first-time buyers who meet these criteria.
What are the standard SDLT residential bands?
For standard residential purchases in England and Northern Ireland, SDLT applies at 0 per cent on the first £250,000, 5 per cent on £250,001 to £925,000, 10 per cent on £925,001 to £1.5 million, and 12 per cent above £1.5 million. These are the rates for buyers who do not qualify for first-time buyer relief and do not own other residential property. Each rate applies only to the portion of the price within that band.
Is there a minimum property value below which no SDLT is due?
SDLT does not apply to purchases below £40,000. Above that threshold, standard SDLT rates apply from the first pound on additional residential properties subject to the surcharge. For standard residential purchases where the total price does not exceed £250,000, the nil rate means no SDLT is payable, but a return may still be required. Check with HMRC whether a return is needed for your transaction.
When must SDLT be paid and a return filed?
SDLT must be paid and a land transaction return submitted to HMRC within 14 days of completion. This is the legal deadline; missing it results in automatic late filing penalties and interest on the unpaid tax. Your conveyancing solicitor typically handles this as part of the purchase process. If you are purchasing without a solicitor, you are responsible for filing and paying directly through HMRC’s online service.
Do companies pay higher SDLT rates on residential property?
Yes. Corporate bodies purchasing residential property worth more than £500,000 pay a flat 15 per cent SDLT rate, unless an exception applies (for example, property rental businesses, property development, and certain other commercial activities). Purchases below £500,000 by a company are subject to standard residential rates plus the additional property surcharge, since a company is treated as already owning residential property. Tax advice is recommended before purchasing through a company structure.
Was multiple dwellings relief abolished?
Yes. Multiple dwellings relief (MDR), which allowed buyers purchasing two or more dwellings in a single transaction to calculate SDLT on the average price per dwelling rather than the total, was abolished from 1 June 2024. Transactions that exchanged contracts on or before 6 March 2024 could still claim MDR if they completed before 1 June 2024. For transactions completing after that date, SDLT is calculated on the full purchase price without this relief.
Can I reclaim SDLT if I sell my previous home after buying a new one?
Yes, in some cases. If you paid the additional property surcharge because you had not yet sold your previous main home at the time of purchase, you can claim a refund of the surcharge from HMRC provided you sell the previous property within three years of the new purchase. The refund claim must be submitted within 12 months of selling the previous property or within 12 months of the date the SDLT return was due, whichever is later.
Is SDLT payable on inherited property?
No SDLT is due when a property is inherited, because SDLT applies to purchases involving chargeable consideration. However, inheriting a property does count towards the number of residential properties you own for the purpose of the additional property surcharge on any future purchase. If you inherit a property and later buy another, you may be liable for the surcharge even if you had not previously purchased property yourself.
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