FAQ 020 | How Is UK Stamp Duty Calculated?

Author: SJW Research & Intelligence

Brand: SJW UK Properties

How is UK Stamp Duty calculated?

This is one of the questions clients care about most when preparing to buy in the UK. They often ask, quite simply: “How much Stamp Duty will I have to pay?” There is no single answer, because UK Stamp Duty is not charged at one fixed percentage. It is determined by a combination of factors, which is why two buyers paying the same price for a property may owe different amounts.

Which factors affect the amount of Stamp Duty?

Under the current UK tax system, Stamp Duty generally takes account of the following:

 the agreed purchase price;

 the use of the property, whether as a main home or an investment;

 the buyer’s existing property position;

 whether any relief applies;

 the tax policy the government has in force at the time.

We therefore recommend calculating the figure against your own circumstances before you formally commit to a purchase.

Why did my friend pay a different amount?

This is one of the questions we have heard most often since 2015. Clients frequently say: “My friend bought a property at a similar price. Why did they pay less than me?” UK Stamp Duty does not depend on price alone. For example:

 one buyer is purchasing a main home;

 another is purchasing an investment property;

 one is a first-time buyer;

 their existing property positions differ;

 they bought at times when different rules applied.

The outcomes can therefore be entirely different.

UK residential Stamp Duty rates as at July 2026 (England and Northern Ireland)

(As at July 2026. The rates published by the UK government on GOV.UK are the authoritative source.)

1. Standard residential SDLT

 £0 – £125,000: 0%

 £125,001 – £250,000: 2%

 £250,001 – £925,000: 5%

 £925,001 – £1,500,000: 10%

 Above £1,500,000: 12%

UK Stamp Duty works on a progressive, sliced basis. Each rate applies only to the portion of the

price that falls within the corresponding band, not to the whole purchase price.

2. First-time buyer relief

 £0 – £300,000: 0%

 £300,001 – £500,000: 5%

 Above £500,000: first-time buyer relief is not available, and the standard residential rates apply.

3. Second homes and buy-to-let

A surcharge of 5% is normally added to the standard residential rates, known as the higher rates for additional dwellings.

 £0 – £125,000: 5%

 £125,001 – £250,000: 7%

 £250,001 – £925,000: 10%

 £925,001 – £1,500,000: 15%

 Above £1,500,000: 17%

4. Non-UK resident buyers

A buyer who is non-UK resident for these purposes normally pays a further 2% on top of the applicable rates when purchasing UK residential property, known as the non-resident SDLT surcharge.

Can you calculate Stamp Duty yourself?

You can. The UK government provides an official Stamp Duty calculator: enter the price and the relevant details and it will produce the amount payable. We do, however, remind clients that a calculator can only produce a figure. It cannot tell you whether you have chosen the ownership structure that best suits you.

In business since 2015: many clients get the tax right and the investment wrong

Since 2015 we have watched clients spend a great deal of time working out how much Stamp Duty they owe. There are other questions that deserve at least as much thought. For example:

 Will you buy further UK property in future?

 Will the property be let over the long term?

 Will it be held personally or through a company?

 Is a complete tax framework in place?

We therefore encourage clients to look beyond what is payable today and consider whether today’s decision will affect the next decade of their investment planning.

SJW Practical Tip

Based on our experience at SJW UK Properties since 2015, we recommend confirming the Stamp Duty position with your property adviser, solicitor and tax adviser before you pay a reservation fee or exchange contracts.

SJW Insight

Stamp Duty is only one part of the cost of investing in UK property. Experienced investors consider the purchase cost, the cost of ownership, rental income, tax arrangements, mortgage planning and an eventual sale within a single framework. Saving on one tax bill should not come at the expense of the wider plan.

Official References

The residential Stamp Duty rates in this article are compiled from UK government sources as at July 2026:

 GOV.UK — Stamp Duty Land Tax: Residential Property Rates

 GOV.UK — Higher Rates for Additional Residential Properties

 HM Revenue & Customs (HMRC)

Last updated: July 2026

Disclaimer: This article is provided for general information only and does not constitute legal, tax, accounting or investment advice. UK Stamp Duty policy and rates may change as legislation changes. Your own position should be confirmed against the policy in force at the time of the transaction and the advice of a professional tax adviser and solicitor.