Stamp Duty Calculator

Second Home Stamp Duty

The complete guide to the 5% additional property surcharge.

5%

Surcharge rate

£40k

Minimum threshold

36

Months to claim refund

Apr 2025

Increased from 3%

What is the Second Home Surcharge?

The additional property surcharge (commonly called the "second home surcharge") is an extra 5% stamp duty charged on the purchase of additional residential properties.

The surcharge was introduced in April 2016 at 3% and increased to 5% in April 2025. It applies to the entire purchase price, not just portions above certain thresholds.

Second Home SDLT Rates

BandStandard RateWith 5% Surcharge
£0 - £125,0000%5%
£125,001 - £250,0002%7%
£250,001 - £925,0005%10%
£925,001 - £1,500,00010%15%
Over £1,500,00012%17%

Example Calculations

Property PriceStandard SDLTSecond Home SDLTExtra Cost
£200,000£1,500£11,500+£10,000
£300,000£5,000£20,000+£15,000
£500,000£15,000£40,000+£25,000
£750,000£27,500£65,000+£37,500

When Does the Surcharge Apply?

The surcharge applies if, at the end of the day of purchase, you will own two or more residential properties and you're not replacing your main residence.

The Surcharge DOES Apply To:

  • ✓ Second homes and holiday homes
  • ✓ Buy-to-let investment properties
  • ✓ Properties bought by companies
  • ✓ Buying a new home before selling your old one
  • ✓ Properties where you have a beneficial interest over 50%

The £40,000 Threshold

The surcharge only applies to properties costing more than £40,000. Properties below this threshold don't attract the surcharge (though they still count as "additional properties" when assessing other purchases).

Replacement Main Residence

You can avoid the surcharge if you're replacing your main residence and selling your previous main home. The key conditions are:

  • The new property will be your main residence
  • You're selling (or have sold) your previous main residence
  • The previous property was your main residence at some point in the 3 years before buying

The 36-Month Refund Rule

Claim Back the Surcharge

If you paid the surcharge because you bought a new home before selling your old one, you can claim a refund if you sell your previous main residence within 36 months.

Time limit: You must claim within 12 months of selling your old property, or within 12 months of filing your SDLT return (whichever is later).

Inherited Property

Inheriting a property can trigger the surcharge on future purchases, but there are important rules:

  • Less than 50% share: If you inherit less than 50% of a property, it's ignored for surcharge purposes
  • 50% or more: If you inherit 50% or more, it counts as an additional property
  • 3-year rule: Inherited property is ignored if you inherited it within 3 years of buying and have a share of less than 50%

Married Couples

Important: Spousal Ownership

Married couples and civil partners are treated as a single unit. If either spouse owns another property, both are considered to own it for surcharge purposes. This applies even if only one person is buying the new property.

Property Abroad

The surcharge considers property ownership worldwide. If you own residential property in another country, it counts as an additional property for UK stamp duty purposes.

Scotland and Wales

RegionSurcharge RateName
England & NI5%Higher Rates for Additional Dwellings
Scotland6%Additional Dwelling Supplement (ADS)
Wales4%Higher Rates

Emma Richardson, MRICS

Verified Expert

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.

MRICSBSc (Hons) Estate Management
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