Stamp Duty Land Tax (SDLT)
Tax on property purchases in England and Northern Ireland. Buy-to-let purchases above £40,000 incur a 5% surcharge on top of the standard rates (rising to higher in 2026). Check HMRC for current bands.
At a glance
- BTL surcharge
- 5% above standard rates (2026)
- Threshold
- £40,000+ purchase price
- Regulator
- HMRC
Full guide
Read the complete landlord guide on Stamp Duty Land Tax (SDLT)
Deadlines, fines and step-by-step compliance in our in-depth resource.
Open full guideWhy Stamp Duty Land Tax (SDLT) matters for landlords
SDLT is one of the largest one-off landlord costs and the 2026 surcharge bands shifted the math again. Buyers who do not budget the surcharge end up under-capitalised and over-leveraged — this is a major driver of forced HMO conversions by new landlords trying to rescue the yield post-purchase. Budget SDLT before, not during, solicitor instructions.
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Official sources
LetCompliance editorial reviews this entry every quarter against the sources above. Always confirm specific duties with a qualified solicitor or your local council.
Related terms
Stamp Duty Surcharge (Additional Property)
The additional 5% Stamp Duty Land Tax surcharge (England and Northern Ireland, raised from 3% on 31 October 2024) on the purchase of an additional residential property over £40,000, including most buy-to-let purchases and second homes. Applies on top of the standard SDLT residential bands. A separate 2% non-resident surcharge applies to non-UK-resident buyers. Refundable within 36 months if the previous main residence is sold; rules differ in Scotland (Land and Buildings Transaction Tax + 8% Additional Dwelling Supplement) and Wales (Land Transaction Tax + 4% Higher Residential Rate).
BTL (Buy-to-Let)
A mortgage product and business model where a property is purchased specifically to rent out. Buy-to-let landlords are subject to Section 24 of the Finance Act 2015, which replaced mortgage interest relief with a 20% tax credit. Stamp duty is higher on a second property.
Check-in / Check-out Report
The dated, photographed inventory record taken at the start (check-in) and end (check-out) of a tenancy, signed by tenant and landlord/agent. It is the primary evidence base for any deposit deduction claim through the DPS, TDS or mydeposits adjudication process — without it, the scheme will almost always award the deposit back to the tenant. Best practice: third-party inventory clerk, time-stamped photographs of every room and meter reading, and tenant sign-off within 7 days.
Capital Gains Tax (CGT)
Tax on the profit from selling a rental property. From April 2024 the CGT annual exempt amount was reduced to £3,000 and residential property gains are taxed at 18% (basic rate) or 24% (higher rate). A CGT return must be filed and tax paid within 60 days of completion.
Furnished Holiday Let (FHL)
A short-let property meeting the FHL availability and letting tests (210 days available, 105 days actually let, etc.). Treated as a trade for tax purposes until 5 April 2025, with full mortgage interest deduction, capital allowances on furniture and fittings, and Business Asset Disposal Relief on sale. From 6 April 2025 the FHL regime was abolished by the Finance Act 2024: existing FHLs fall under standard property income rules and Section 24 mortgage interest restriction applies in full.
Mortgage Interest Tax Credit (Section 24)
The 20% basic-rate tax credit that replaced full mortgage interest deduction for individual UK landlords under section 24 of the Finance (No.2) Act 2015. From 6 April 2020, finance costs (mortgage interest, loan interest, mortgage broker fees) are no longer deductible from rental profits; instead HMRC gives a tax reducer at the basic rate, capped at the lower of finance costs, property profits or adjusted total income after personal allowance. Higher- and additional-rate taxpayers are materially worse off than pre-2017; Limited Company landlords are unaffected because Ltd interest remains a fully deductible business expense.