UK Stamp Duty in 2025: what buyers actually pay

Stamp Duty Land Tax, usually just called stamp duty, is the tax you pay when you buy a property or land over a certain price in England and Northern Ireland. Scotland and Wales run their own separate systems. For most buyers it is one of the largest single costs of moving, and because it changed in April 2025, a lot of online guidance is now out of date.

The tax often gets described as a flat percentage, which is wrong and usually makes it sound worse than it is. Stamp duty works in bands, like income tax, so understanding the structure can save you from nasty surprises and from overestimating the bill.

How the bands work

You do not pay one rate on the whole price. Instead, each slice of the price falls into a band with its own rate, and you pay that rate only on the part of the price within the band. A portion below the starting threshold is taxed at zero, the next slice at a low rate, and higher slices at progressively higher rates.

Because of this, the headline rate for an expensive home overstates the real cost, since the lower slices are still taxed lightly or not at all. The effective rate, meaning the total tax as a share of the price, is always lower than the top band you reach.

What changed in April 2025

Temporary thresholds that had been in place reverted from 1 April 2025, which means the tax-free starting band is lower than it was, and more purchases now fall into the charge. In practice, buyers of mid-priced and higher homes are paying somewhat more stamp duty than they would have a year earlier.

First-time buyer relief also tightened. First-time buyers still pay no stamp duty up to a set threshold and a reduced rate on a band above that, but both of those limits came down in April 2025. The relief remains valuable, just less generous than during the temporary period.

The surcharges that catch people out

• An additional-property surcharge applies on top of the standard rates if you buy a second home or a buy-to-let while keeping another residence, and it can add a large amount to the bill.
• Non-UK residents pay a further surcharge on residential purchases, stacked on top of the standard and additional-property rates where they apply.
• If you buy a new home before selling your old one, you may pay the surcharge up front and reclaim it later, within a time limit, once the previous home is sold.
• First-time buyer relief is lost entirely if the price is above the upper limit, so a purchase just over the line can cost noticeably more than one just under it.

Who pays and when

Stamp duty is the buyer's responsibility, not the seller's. Your solicitor or conveyancer normally files the return and pays the tax on your behalf shortly after completion, and there is a strict deadline. Missing it brings penalties and interest, so this is not a bill to leave until later.

Crucially, stamp duty is paid in cash on top of your deposit and cannot be added to most mortgages. That makes it essential to budget for it from the start, because it directly reduces the deposit you have available.

Work out your own figure

Because the tax is banded and depends on whether you are a first-time buyer, an additional-property purchaser, or a non-resident, the only reliable way to know your bill is to run your exact price through the current bands. Small changes in price near a threshold can move the total by a surprising amount.

Rates and thresholds are set by the government and can change again, so treat any figure as an estimate and check the latest rules on GOV.UK before you commit; nothing here is tax or legal advice. But knowing roughly what stamp duty will cost, well before completion, keeps it from derailing your budget at the worst possible moment.