Stamp duty for landlords: the bands, the 5% surcharge and how to plan around it

Stamp Duty Land Tax is the largest single cost of buying an investment property after the deposit, and it is paid in cash on completion. Knowing the rules in advance changes what you can afford and sometimes what you should buy.

The standard bands

SDLT is charged in slices. For residential property in England and Northern Ireland the standard rates are:

Slice of price	Rate
Up to £125,000	0%
£125,001 to £250,000	2%
£250,001 to £925,000	5%
£925,001 to £1,500,000	10%
Over £1,500,000	12%

A £400,000 purchase at standard rates costs £2,500 on the second slice plus £7,500 on the third: £10,000.

The additional-dwelling surcharge

If at the end of the day of completion you own more than one residential property anywhere in the world, or the buyer is a company, an extra 5% applies to every slice including the first. The same £400,000 purchase then costs £30,000. Purchases under £40,000 are exempt from the surcharge.

The surcharge is what makes a buy-to-let deal at £300,000 carry £20,000 of stamp duty rather than £5,000, and it is why sourcing below market value matters so much more than it did.

Replacing your main home

If you are buying a new main residence and still own the old one on completion, you pay the surcharge but can reclaim it if the old home is sold within 36 months. Investors sometimes forget the reverse: if you keep a former home and buy a new one, the surcharge applies even though you only ever intended to live in each property.

First-time buyers

First-time buyer relief gives 0% up to £300,000 and 5% on the slice from £300,000 to £500,000, with no relief at all above £500,000. It does not apply to buy-to-let or to purchases made through a company, and it is lost if any buyer has previously owned property anywhere.

Non-residents

Buyers who have not been present in the UK for at least 183 days in the twelve months before completion pay a further 2%. This stacks with the additional-dwelling surcharge, so a non-resident investor pays an extra 7% on every slice. The surcharge can be reclaimed if the buyer then spends 183 days in the UK within the two-year window around completion.

Where landlords can legitimately save

• Mixed-use property: a building with a shop below and flats above is taxed at non-residential rates, which have no surcharge and are lower at most price points. HMRC scrutinises claims that a token commercial element makes a property mixed-use, so the commercial part must be real.
• Six or more dwellings in one transaction can be treated as non-residential.
• Buying a company rather than its property attracts stamp duty on shares at 0.5% rather than SDLT, which is why some portfolios are bought as companies. Due diligence on the company's history is essential.
• Partnership incorporation: transferring a genuine property partnership into a company can qualify for relief that removes the SDLT charge. This is a structural decision, not a tactic, and needs proper advice.
• Uninhabitable property can sometimes fall outside residential rates, but the bar is high and the tribunal cases go against buyers more often than for them.

Deadlines and mechanics

The return and payment are due within 14 days of completion; your solicitor handles both and the money must be with them before the day. Late filing and payment attract penalties and interest.

Scotland (Land and Buildings Transaction Tax) and Wales (Land Transaction Tax) have different bands and their own additional-dwelling supplements, so figures here do not apply there.

Use our stamp duty calculator for an instant figure, and speak to a solicitor or tax adviser before relying on any relief. AIRPROP helps clients appraise purchases with the true all-in cost, including SDLT, before they make an offer.