New Stamp Duty Land Tax (SDLT) Rates (Autumn 2024 Budget)

The Autumn 2024 Budget introduced significant changes to Stamp Duty Land Tax (SDLT) in England and Northern Ireland, particularly affecting purchasers of additional residential properties and corporate buyers.

This post will give you a simple break-down of the new stamp duty rates that were enacted in October, plus the changes that are coming down the line on 1st April next year.

Let’s dive in.

Increased Surcharge on Additional Properties

Effective from 31 October 2024, the SDLT surcharge for individuals purchasing additional residential properties—such as second homes or buy-to-let investments—has risen from 3% to 5% above the standard residential rates.

This was a significant overnight increase.

The surcharge jumped by 67% in a single day.

For buy-to-let investors, this means higher upfront costs that can significantly impact your projected yields—especially if you’re leveraging mortgages.

Transitional protection: If you exchanged contracts before 31 October 2024 but completed on or after that date, you may still qualify for the old 3% surcharge rate—provided you weren’t in a position to vary or rescind the contract. Check with your conveyancer if this applies to you.

Higher Rate for Corporate Purchasers

For companies and other non-natural persons acquiring residential properties valued over £500,000, the SDLT rate has increased from 15% to 17%, applicable to transactions with an effective date on or after 31 October 2024.

This affects corporate buyers, partnerships, and certain trusts.

The 17% rate applies to the entire purchase price, not just the portion above £500,000.

Reversion of SDLT Thresholds

From 1 April 2025, SDLT thresholds will revert to their pre-September 2022 levels.

Why the change? The higher thresholds introduced in September 2022 were temporary measures to stimulate the property market during the cost-of-living crisis.

Here’s what’s changing:

The 0% rate will now apply only to properties up to £125,000 (down from the current £250,000).

The 2% SDLT rate will apply to residential properties valued between £125,000 and £250,000.

The 5% rate will apply to properties valued between £250,001 and £925,000.

What this means for buyers:

Anyone purchasing a property above £125,000 will pay more SDLT from 1 April 2025 onwards.

For example:

• A £200,000 property currently pays £0 in SDLT
• From April 2025, the same property will pay £1,500 in SDLT

This affects the majority of property transactions in England and Northern Ireland, where the median house price is significantly above £125,000.

First-Time Buyer Relief Adjustments

Also from 1 April 2025, the threshold for First-Time Buyer Relief will decrease.

Current rules (until 31 March 2025):

• First-time buyers pay no SDLT on properties up to £425,000
• Reduced SDLT on properties between £425,001 and £625,000

New rules (from 1 April 2025):

• First-time buyers pay no SDLT on properties up to £300,000
• Reduced SDLT on properties between £300,001 and £500,000
• No relief at all on properties above £500,000

Who counts as a first-time buyer?

You qualify for first-time buyer relief if:

• You’ve never owned a residential property before, anywhere in the world
• The property you’re buying will be your only or main residence
• The property costs £500,000 or less

Non-UK Resident Surcharge

Here’s something many buyers overlook.

If you’re not a UK resident, you’ll pay an additional 2% SDLT surcharge on top of all other rates.

This applies to anyone who has spent fewer than 183 days in the UK during the 12 months before completing their property purchase. Note that this SDLT residency test is separate from your general UK tax residency status.

And it stacks with the additional dwellings surcharge.

The combined effect can add tens of thousands of pounds to your purchase costs.

How SDLT Actually Works (The Tiered System)

SDLT isn’t a flat percentage—it’s calculated in bands, much like income tax.

You pay different rates on different portions of the purchase price.

Standard residential SDLT rates (England & Northern Ireland):

From 1 April 2025, the first band drops to £125,000 at 0%, with a new 2% band from £125,001 to £250,000.

If you’re buying an additional property (second home, buy-to-let), add 5% to each band.

If you’re a non-UK resident, add another 2%.

Example: What Happens If You Buy Property Through a Company

Let’s look at an example where a business buys a property for £750,000.

Purchase Price: £750,000
Buyer: A company (non-natural person)

Calculation:

SDLT Calculation for Non-Natural Persons:

Since the purchase price exceeds £500,000 and the buyer is a company (non-natural person), the 17% flat rate applies to the entire purchase price. The standard tiered rates do not apply in this case.

Total SDLT Payable:

Total SDLT = 17% of £750,000 = £127,500

The total Stamp Duty Land Tax of £127,500 equates to 17% of the total purchase price of the £750,000 property.

A pretty chunky stamp duty bill by any standard.

When Do You Need to Pay SDLT?

Here’s the thing: SDLT isn’t due when you exchange contracts—it’s due 14 days after the “effective date” of the transaction.

The effective date is usually your completion date.

But there’s a catch.

If the contract is “substantially performed” before completion, that earlier date becomes the effective date instead.

What counts as substantial performance?

• The buyer takes possession of the property, OR
• The buyer pays 90% or more of the purchase price

So if you move into a property before completion (with the seller’s permission), or pay a large deposit, you may trigger the SDLT deadline earlier than expected.

Common SDLT Mistakes to Avoid

Mistake 1: Calculating SDLT on the Guide Price (Auction Buyers)

If you’re buying at auction, SDLT is calculated on the hammer price—not the guide price listed in the catalogue.

Here’s where buyers get caught out:

A property listed at a guide price of £200,000 attracts competitive bidding and sells for £350,000.

Your SDLT bill is calculated on £350,000—not the £200,000 you originally budgeted for.

Given SDLT operates on a tiered basis, that extra £150,000 can push you into a higher tax band and significantly increase your liability.

For buy-to-let investors subject to the additional dwellings surcharge, the impact is even greater—competitive bidding can transform what appeared to be a tax-efficient acquisition into an unexpectedly expensive transaction.

Always budget for SDLT based on your maximum bid, not the guide price.

Source: Pugh Auctions; HMRC

Mistake 2: Thinking “Uninhabitable” Properties Qualify for Lower Rates

There’s a widespread misconception that buying a property in poor condition—one that needs renovation—qualifies you for lower “non-residential” SDLT rates (capped at 5%).

HMRC is very clear on this: it doesn’t.

Don’t get caught out. Budget for full residential SDLT rates unless you have specialist tax advice confirming otherwise.

How Will These Rate Changes Impact the UK Property Market?

The recent and upcoming changes to Stamp Duty Land Tax are poised to influence various segments of the property market.

Let’s take a look at the key changes one by one and explore how they will affect the market.

Increased SDLT Surcharge on Additional Properties (Effective 31 October 2024)

The surcharge for purchasing additional residential properties, such as second homes and buy-to-let investments, has risen from 3% to 5%.

Potential Impacts:

Reduced Investment in Rental Properties:

Higher acquisition costs may deter investors, potentially leading to a decrease in the supply of rental properties.

This could result in higher rents due to reduced availability.

We’ve certainly seen buy-to-let investors re-evaluating their portfolios since the surcharge increase.

Increased Opportunities for First-Time Buyers:

With fewer investors competing, first-time buyers might find it easier to enter the market, potentially stabilising or reducing property prices in certain areas.

Though this may be offset by the reduction in First-Time Buyer Relief from April 2025.

Reversion of SDLT Thresholds (Effective 1 April 2025)

SDLT thresholds will revert to pre-September 2022 levels. Notably, the 0% rate will apply only to properties up to £125,000, down from the current £250,000 threshold.

Potential Impacts:

Increased Transaction Costs:

Buyers purchasing properties above £125,000 will face higher SDLT liabilities, potentially reducing affordability and dampening demand, especially in regions with higher property values.

Market Activity Surge Before April 2025:

Anticipation of higher SDLT rates may lead to a rush of transactions before the changes take effect, followed by a potential slowdown post-implementation.

If you’re planning to buy in early 2025, factor in the possibility of increased competition from other buyers trying to complete before the deadline.

Adjustment to First-Time Buyer Relief (Effective 1 April 2025)

The threshold for First-Time Buyer Relief will decrease from £425,000 to £300,000. Additionally, the maximum property value eligible for any relief will drop from £625,000 to £500,000.

Potential Impacts:

Reduced Affordability for First-Time Buyers:

First-time buyers purchasing properties between £300,000 and £425,000 will incur SDLT liabilities where previously exempt, potentially making it more challenging to get on the property ladder.

Shift in Demand:

There may be increased competition for properties priced below £300,000, potentially driving up prices in this segment.

This could create a two-tier market, with heightened demand for properties under the relief threshold.