UK Property Tax Guide for Landlords 2026: Everything Changed

Property Taxes in 2026: The Landscape

UK property taxes have undergone significant evolution over the past five years. Understanding the current rules is essential for any investor serious about maximising returns. The key taxes affecting property investors are Stamp Duty Land Tax (SDLT), Capital Gains Tax (CGT), Income Tax on rental profits, and Corporation Tax for incorporated investors. Each has seen changes that directly affect deal viability.

Stamp Duty Land Tax (SDLT) 2026

The SDLT surcharge on additional properties remains at 5%. For a £300,000 property, this means total SDLT of £12,500 (3% on first £250k + 8% on the remaining £50k, plus the 5% surcharge on everything). First-time buyers purchasing their main residence are exempt on the first £425,000. For company purchases, the 15% flat rate on properties over £500k applies unless the company runs a genuine property rental business — in which case standard rates plus surcharge apply. Mixed-use properties (commercial + residential) continue to attract lower rates and are worth considering for portfolio acquisitions.

Income Tax and Section 24

Section 24 remains in full force. Landlords holding properties personally cannot deduct mortgage interest from rental income before calculating tax. Instead, they receive a 20% tax credit on interest paid. This means higher-rate taxpayers (40%) and additional-rate taxpayers (45%) pay significantly more tax on rental income than they would through a limited company structure. The effective tax rate on rental income for a higher-rate taxpayer with a highly leveraged portfolio can exceed 60%.

Capital Gains Tax 2026

CGT on residential property disposals is charged at 18% for basic rate taxpayers and 24% for higher rate taxpayers. The annual exempt amount remains £3,000. Key reliefs to be aware of: Private Residence Relief (if you've lived in the property), Letting Relief (up to £40,000), and Business Asset Disposal Relief (10% rate, up to £1m lifetime limit — available for furnished holiday lettings and some trading businesses).

Corporation Tax for Property Companies 2026

For properties held in SPVs, the main rate of corporation tax is 25% (for profits over £250,000). Small profits rate is 19% (profits under £50,000). Between £50k-£250k, marginal relief applies. Unlike personal holding, companies can fully deduct mortgage interest. The trade-off is the double taxation when extracting profits (corporation tax + dividend tax). Despite this, most analysis shows holding 3+ properties in a company structure saves tax overall.

Planning for 2026/27

With the current government signalling no major property tax changes in the near term, the environment is relatively stable. Key planning steps for the year ahead: review your holding structure (is incorporation right for you?), maximise capital allowances on refurbishment works, use your spouse's tax-free allowances, and consider trust structures for inheritance tax planning. A good property accountant is worth their weight in gold — the cost of getting tax planning wrong far exceeds the fee.