Stamp Duty Bands Explained for UK Flat Buyers

Stamp Duty Land Tax, almost always shortened to SDLT, is a tax you pay to HMRC when you buy a property in England or Northern Ireland above a certain price. Scotland and Wales have their own versions with different names and slightly different rates, so if you're buying north of the border or in Cardiff, the principles here are the same but the exact figures won't be.

As a buyer, the bill lands with you, not the seller. Your solicitor or conveyancer handles the paperwork and pays it on your behalf, usually from the funds you transfer to them before completion. It's due within fourteen days of completion, so it's not something you can defer or spread out.

For flat buyers specifically, SDLT works exactly the same way as it does for houses. The type of property doesn't change the rate. What changes the rate is the purchase price, whether you're a first time buyer, and whether you already own another property anywhere in the world.

Here's the thing most people get wrong. SDLT is a marginal tax, which means you only pay each rate on the slice of the price that falls within that band. It works exactly like income tax in that sense. You do not pay the higher rate on the entire purchase price just because you've crossed a threshold.

Think of the price as a cake. Each layer of the cake is taxed at its own rate. Only the top layer, the bit above the highest threshold you've crossed, gets taxed at the top rate.

This matters because people sometimes panic when they see a flat priced at, say, two hundred and fifty one thousand pounds and assume they've suddenly jumped into a much more expensive tax bracket. The reality is far gentler. You only pay the higher rate on that one extra thousand pounds above the threshold, not on the whole amount.

From the first of October 2025, the temporary thresholds that were in place since September 2022 reverted to their previous levels. These are the standard rates that now apply for most buyers purchasing a main residence.

On the first two hundred and fifty thousand pounds of the purchase price, you pay nothing. On the portion from two hundred and fifty thousand pounds up to nine hundred and twenty five thousand pounds, you pay five percent. On the portion from nine hundred and twenty five thousand pounds up to one and a half million pounds, you pay ten percent. On anything above one and a half million pounds, you pay twelve percent.

For the vast majority of flat buyers in most parts of the country, only the first two bands will ever be relevant. Flats above nine hundred and twenty five thousand pounds exist, obviously, but they're a small corner of the market.

Let's make this concrete, because abstract percentages only go so far.

If you buy a flat for two hundred thousand pounds, you pay zero. The entire price sits within the nil rate band.

If you buy at two hundred and fifty thousand pounds exactly, you still pay zero. You're right on the threshold but haven't crossed it.

At two hundred and sixty thousand pounds, you pay five percent on the ten thousand pounds above the threshold, which comes to five hundred pounds total.

At three hundred thousand pounds, you pay five percent on the fifty thousand pounds above two hundred and fifty thousand pounds. That's two thousand five hundred pounds.

At four hundred thousand pounds, the taxable slice is one hundred and fifty thousand pounds at five percent, giving you a bill of seven thousand five hundred pounds.

At five hundred thousand pounds, you're paying five percent on two hundred and fifty thousand pounds, which is twelve thousand five hundred pounds.

These figures assume you're buying as a main residence and you don't own any other property. Both of those conditions matter a great deal.

If you've never owned a residential property anywhere in the world, you qualify for first time buyer relief. This is genuinely worth knowing about before you offer, because it can save you a meaningful amount of money.

Under first time buyer relief, the nil rate band is extended. You pay nothing on the first three hundred and twenty five thousand pounds of the purchase price. From three hundred and twenty five thousand pounds up to five hundred thousand pounds, you pay five percent. Above five hundred thousand pounds, first time buyer relief disappears entirely and you pay standard rates on the whole purchase price, not just the bit above five hundred thousand.

So at a purchase price of four hundred thousand pounds, a first time buyer pays five percent on seventy five thousand pounds, which is three thousand seven hundred and fifty pounds. Compare that to the seven thousand five hundred pounds a non-first-time buyer would pay at the same price. That's a saving of three thousand seven hundred and fifty pounds, which is real money.

At five hundred thousand pounds, a first time buyer pays five percent on one hundred and seventy five thousand pounds, giving a bill of eight thousand seven hundred and fifty pounds versus twelve thousand five hundred pounds for someone who already owns. Again, a significant difference.

If you're buying jointly with someone who already owns a property, you lose first time buyer relief for the whole transaction. Both buyers need to be first timers for the relief to apply.

If you already own a residential property anywhere in the world and you're buying a flat that won't be your main residence, you'll pay an extra three percentage points on top of every standard band. This is called the higher rates for additional dwellings surcharge.

So instead of zero percent on the first two hundred and fifty thousand pounds, you'd pay three percent. Instead of five percent on the next band, you'd pay eight percent. It adds up fast.

At three hundred thousand pounds with the surcharge, you'd pay three percent on two hundred and fifty thousand pounds (seven thousand five hundred pounds) plus eight percent on fifty thousand pounds (four thousand pounds), giving a total of eleven thousand five hundred pounds. Without the surcharge, the same flat costs two thousand five hundred pounds in SDLT.

Even if you're a first time buyer of a flat but you're keeping a property abroad, the surcharge applies. HMRC's definition of owning a property is global, not just UK-based. Worth checking with your solicitor if there's any ambiguity in your situation.

A few numbers are genuinely worth having in your head when you're viewing flats and thinking about what to offer.

Two hundred and fifty thousand pounds is the main nil rate threshold for standard buyers. Buying at or below this means no SDLT at all. It's a meaningful boundary.

Three hundred and twenty five thousand pounds is the equivalent threshold for first time buyers. Below this, you pay nothing.

Five hundred thousand pounds is the ceiling for first time buyer relief. Cross it and you lose the relief on the entire purchase, so the jump in tax liability at that point is sharp. If you're close to this level, it's worth doing the maths carefully.

Nine hundred and twenty five thousand pounds is where the ten percent band kicks in for standard buyers. Most flat buyers won't get near this, but in central London it's relevant.

Knowing where these lines sit helps you think about offers strategically. If a flat is listed at five hundred and ten thousand pounds and you're a first time buyer, offering five hundred thousand pounds or below saves you considerably more than just the ten thousand pounds difference in purchase price. Your solicitor can run the exact figures for your situation, and you should ask them to before you exchange.