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Tax & Accounting

Will you have to pay the sdlt surcharge

By Ali Jaw ·

Stamp Duty Land Tax (SDLT) can feel like an unwelcome surprise when you’re buying property in the UK. But there’s another layer to consider: the SDLT surcharge. If you’re purchasing a second property or an additional residential property, you could face a higher tax bill than a first-time buyer in the same situation. Let’s break down what you need to know.

What is the SDLT surcharge?

The SDLT surcharge is an additional 5% levy on top of standard SDLT rates. It applies when you purchase a residential property and you already own another residential property in the UK (or abroad). This includes main residences, second homes, buy-to-let properties, and properties held jointly.

HMRC introduced this surcharge in April 2016 to cool demand in the property market and discourage investment in second homes. Even if you’ve only owned a property for a short time, or you’re purchasing with a spouse who already owns a property, the surcharge could apply to you.

Who triggers the surcharge?

The surcharge applies if you own, or have a beneficial interest in, a dwelling that you don’t intend to live in as your only or main residence. This includes:

  • Buy-to-let properties
  • Holiday homes
  • Properties owned abroad
  • Residential properties you own jointly with others

However, there are some exceptions. You won’t pay the surcharge if:

  • You’re replacing your main residence (provided you lived in the old property as your main home and dispose of it within three years)
  • You’re a foreign national without a UK residential property interest already

Current SDLT rates and thresholds (2024/25)

To understand whether you’ll actually pay the surcharge, you need to grasp the base SDLT rates first. Standard rates for residential properties are:

  • £0 to £250,000: 0%
  • £250,001 to £925,000: 5%
  • £925,001 to £1,500,000: 10%
  • Over £1,500,000: 12%

The surcharge adds 5% on top of these rates at each band. So if you’re buying a second property for £400,000, you’d pay 10% SDLT instead of 5%.

First-time buyers benefit from a full relief on purchases up to £425,000 (or £550,000 if the property is in a designated area). Critically, this relief does not apply if you trigger the surcharge.

Working out your SDLT liability

Let’s say you’re buying a second property for £500,000. Here’s how the surcharge affects you:

Without surcharge (first-time buyer): £0 to £425,000 at 0%, then £75,000 at 5% = £3,750

With surcharge (second property): £0 to £250,000 at 5%, then £250,000 at 10% = £12,500 to £37,500

That’s a substantial difference. The surcharge doesn’t just apply to the band where the surcharge rate applies—it increases the rate on all applicable bands.

You can submit your SDLT return using HMRC’s online portal, or your solicitor typically handles this on your behalf. They’ll calculate the exact figure based on the purchase price and your circumstances.

Planning ahead

If you’re considering purchasing a second property, it’s worth reviewing your strategy. Some options to explore include:

  • Timing the purchase strategically around property disposals
  • Understanding whether joint ownership affects your position
  • Exploring whether certain exemptions might apply to your circumstances

These considerations require careful thought, and professional advice at the point of purchase can save you thousands.

Conclusion

The SDLT surcharge is a meaningful cost that affects many property buyers beyond their first purchase. At a glance, an additional 5% might not sound dramatic, but on a £400,000 property, it could add £15,000 to your bill.

Understanding whether the surcharge applies to you is essential before you exchange contracts. Your solicitor should flag this during the conveyancing process, but it’s worth raising the question yourself—especially if you own, or will soon own, more than one property.

For tailored advice, contact Severn Accounting — we’re here to help.