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Stamp Duty Calculator 2018

How much stamp duty will you have to pay when buying a property in 2018?

Find out who and when to pay as well as how much you'll need to set aside to complete a property transaction. Knight Frank's agents will be happy to help you at every stage of the UK property buying process.

Calculate Your Stamp Duty

Please enter a numerical value



Stamp Duty To Pay
Effective Rate

How the calculator works

Tax Band % Taxable Sum Tax

Calculate your Stamp Duty


Please enter a numerical value


Stamp Duty to pay:
Effective Rate:

How the Stamp Duty is calculated

Tax Band % Taxable Sum Tax
* If you are a first-time buyer or you are purchasing a second home, please tick the relevant box
*Properties under £40,000 are not subject to second home SDLT
*Updated 28/11/2017

How much Stamp Duty to expect to pay in 2018?

Stamp Duty Land Tax (STLD) is a progressive tax paid when purchasing a freehold, leasehold or shared ownership residential property over £125,000 in England, Northern Ireland and Wales (separate Land and Buildings Transaction Tax in Scotland). New STLD rates were introduced in 2014's Autumn Statement, introducing a sliding system based on thresholds and dependent on a property price.

How has UK Stamp Duty changed since 2014?

Before 2014 a 'slab structure' was in place with buyers paying a rate based on the ENTIRE property purchase price. The new rates are now payable only on the PORTION of a property price which falls within each band. As with every tax, there are those who will be better and worse off compared to the previous system.

Stamp Duty Tax Rates as of December 2014

£0-£125,000 0%
£125,001-£250k 2%
£250,001-£925k 5%
£925,001-£1.5m 10%
£1.5m+ 12%

How to calculate the new Stamp Duty rate 

So, if you bought a property for £850,000 you would you pay no stamp duty on the first £125,000, then 2% on £125,000 to £250,000 and 5% above £250,000. (eg:  £800,000 - £250,000 = £600,000 x 0.05 = £30,000 + £2,500 = £32,500). As the property price increases the rate of pay increases within a certain tax bracket with percentages rising when a higher price threshold is reached. Under the new SDLT property over £925,000 - £1.5m will be taxed at a rate of 10% compared with 5% in 2014.

See historic SDLT rates

Buy-to-let and second homes Stamp Duty 2018 

From April 2016, property buyers in England and Wales will have to pay an additional 3% on each stamp duty band. To discuss which London or UK areas will provide the highest returns on investments in 2018, 2019 and beyond, please speak to one of our London or regional property experts who can offer advice on where and when to invest.

Read more information on Second Home or Buy-to-Let Stamp Duty , exemptions or to calculate surcharge. 

Buy-to-let and second home Stamp Duty tax bands
BracketsStandard rateBuy-to-let/second home rate (April 2016)
Up to £125,000 0% 3%
£125,001 - £250,000 2% 5%
£250,001 - £925,000 5% 8%
£925,001 - £1.5m 10% 13%
over £1.5m 12% 15%
Source: HMRC    

First-time buyer Stamp Duty

Effective 22/11/2017, stamp duty (STLD) will not be payable on properties up to £300,000 for first time buyers. First-time buyers of homes worth up to £500,000 will not pay STLD on the first £300,000 of the price. You will pay Stamp Duty on the remaining amount, up to £200,000 at 5%. Homes worth more than £500,000 will be charged the same level of stamp duty as before. 

Can I reduce Stamp Duty?

As stamp duty is only payable on the land purchase, removable fixtures and fittings, or chattels, such as freestanding wardrobes, sofas, fridges, carpets and curtains, are not subject to SDLT and can, therefore, be subtracted from from the total property price. Everything 'attached' to property such as light switches technically form part of the property and are subject to SDLT.

If a seller is willing to leave certain chattels, you should agree to pay a reasonable amount between yourself and the vendor and subtract it from the agreed purchase price. This can be executed by a good tax lawyer or conveyancer. 

Who pays Stamp Duty?

Stamp Duty is paid by everyone purchasing a property in England, Northern Ireland and Wales above £125,000, including overseas buyers.

When is Stamp Duty paid?

You must pay stamp duty to the HMRC 30 days from the date of completion or you may risk a fine. Your solicitor or legal adviser should take care of this for you and ensure you don't miss the deadline. Some buyers prefer to add on the SDLT amount to their mortgage loan. Please speak to your mortgage provider.

How often does Stamp Duty change?

New stamp duty rates and thresholds have historically been introduced every 2-5 years with the latest changes effective of December 2014.

Mortgage providers

Knight Frank Finance LLP is dedicated to negotiating the most attractive mortgage finance terms for clients from its established network of lenders, often securing terms unavailable elsewhere. Should you have any questions, one of their mortgage experts will be able to help you at every stage of the property financing process.

Contact one of our London or regional offices who will be able to offer guidance.