Updated for 2026/27

Stamp Duty Calculator for Buy-to-Let

Work out exactly how much SDLT you'll pay on an additional property or buy-to-let purchase in England or Northern Ireland, including the 5% surcharge, with a full band-by-band breakdown.

Covers England & Northern Ireland only. Scotland (LBTT) and Wales (LTT) have separate systems with their own rates - see the FAQ below for details.

Buyer type

Your results

Total SDLT due

£22,500

Across all applicable bands

Effective rate

8.18%

Total SDLT as a % of purchase price

Includes 5% additional-property surcharge

Charged on the full purchase price, on top of the standard bands

£13,750

Band-by-band breakdown

£0 - £125,000 (5%)£6,250
£125,000 - £250,000 (10%)£12,500
£250,000 - £925,000 (15%)£3,750
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Speaking to landlords mid-purchase, right when costs matter most

This slot sits below a live SDLT result, in front of buyers actively budgeting for completion. Conveyancers, mortgage brokers, bridging finance, surveyors: if it's relevant at exchange and completion, it belongs here.

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Frequently asked questions

Since April 2016, anyone buying an additional residential property in England or Northern Ireland - including almost all buy-to-let purchases - pays a 5% surcharge on top of the standard SDLT bands. This was introduced specifically to cool investor demand, and it applies whether you already own one property or twenty, as long as the new purchase will not be your only home.