How to reduce Stamp Duty Land Tax (SDLT)

Changes to Stamp Duty Land Tax (SDLT) in England and Northern Ireland

Stamp Duty Land Tax (SDLT) rules in England and Northern Ireland changed on 1 April 2025. For many buyers, this means the point at which SDLT becomes payable—and the level of relief available—has shifted.

For first-time buyers and home movers, the key impact is usually felt through:

• the threshold for when SDLT starts to apply
• the upper limit for first-time buyer relief
• the extra SDLT charged when buying an additional property

Because SDLT is calculated on the purchase price (and certain elements of what you pay), small differences in how a transaction is structured can affect the final bill.

6 ways to reduce your SDLT bill

1) Price your offer with the thresholds in mind

If you’re buying a property that sits close to an SDLT threshold, the purchase price you agree can make a noticeable difference.

This is especially relevant for first-time buyers, where relief can be lost once the property price goes above a certain limit. In practice, buyers often focus on whether the agreed price stays within the relief band rather than simply aiming for “as low as possible”.

Tip: when you’re budgeting, treat SDLT as part of the overall affordability picture—not an afterthought.

2) Negotiate the purchase price (and understand what you’re actually paying)

SDLT is based on the consideration paid for the property. That means negotiating the headline price can reduce SDLT.

Even where a seller is unlikely to move much on price, it can still be worth exploring whether there’s flexibility—particularly if you’re in a strong position to proceed quickly.

3) Use new-build incentives carefully

New-build developments sometimes include incentives such as upgrades, contribution packages, or other benefits.

Whether an incentive affects your SDLT cost depends on how the incentive is structured and what forms part of the “price” for SDLT purposes. Your solicitor or conveyancer can help you understand how the transaction terms may be treated.

4) Keep “extras” out of the purchase price where possible

A common reason SDLT bills are higher than expected is that the total amount paid can include more than just the property itself.

Where items are included in the overall deal, it may increase the figure used for SDLT. In some cases, buyers can agree a separate value for certain items (for example, specific fixtures or items that are not treated as part of the property) so that they don’t inflate the purchase price used for SDLT.

This needs to be handled properly. Any separation of elements should be done on a legally sound basis so the transaction reflects what’s being bought and sold.

5) Check whether you may be able to claim a refund or adjustment

There are situations where SDLT can be reclaimed or adjusted, but it’s highly dependent on the circumstances and timing.

For example, certain scenarios involving an additional property may allow a refund if the property is disposed of within a specified period.

Because SDLT refund rules are technical, it’s important to confirm the position with your solicitor/conveyancer before assuming you can recover costs.

6) Consider alternative property routes (only if they genuinely fit your plan)

Some buyers look at options beyond a standard residential purchase to manage SDLT exposure.

Examples include:

• buying land and building later (where SDLT treatment differs)
• buying a property that will be converted into residential use (where SDLT rates may differ)

These approaches can be complex and may introduce other costs and risks (planning, build timelines, financing, and legal considerations). They’re best considered when they align with your wider housing strategy—not solely as a way to reduce SDLT.

Avoid SDLT “loopholes”

It’s understandable to look for ways to reduce costs when moving home. However, SDLT is governed by detailed legislation and HMRC may challenge arrangements that are designed to avoid tax rather than reflect genuine commercial terms.

A sensible approach is to focus on legitimate levers—such as price negotiation, correct treatment of transaction elements, and understanding whether relief or refunds apply—while ensuring the paperwork is accurate.

How SDLT interacts with your mortgage

Many buyers consider whether they can borrow extra to cover SDLT. Some lenders may allow SDLT to be added to the mortgage amount, but that can affect:

• your loan-to-value (LTV)
• your affordability calculations
• the overall cost of borrowing (because you may pay interest on the SDLT amount over the mortgage term)

If SDLT is part of your budget, it’s usually worth planning for it from the start so you’re not forced into an expensive workaround later.

What to do next (in a practical sense)

Before exchange, it’s helpful to ensure you have a clear view of:

• the agreed purchase price and whether it sits within any relief bands
• whether any incentives or “extras” are included in the SDLT calculation
• whether your solicitor/conveyancer expects any SDLT refund possibilities based on your timeline

That way, SDLT becomes a planned cost rather than a surprise.

Note: SDLT rules vary by transaction type and location, and the correct treatment can depend on the specific facts of your purchase. Your solicitor or conveyancer is the right person to confirm how SDLT is likely to apply to your particular deal.

For official guidance on SDLT, see: https://www.gov.uk/stamp-duty-land-tax