If you are a landlord with a buy-to-let property, 2026 is bringing some of the most significant tax changes in years. Between Making Tax Digital, stricter Capital Gains Tax rules and a fresh income tax rise on the horizon, staying on top of HMRC rental income tax obligations has never been more important.
Here is what every landlord needs to know and how it might shape your next mortgage decision.
What Are the Biggest Landlord Tax Changes for 2026?
From 6th April 2026, Making Tax Digital for Income Tax became mandatory for landlords whose gross property income is more than £50,000. Rather than completing one annual Self Assessment return, the affected landlords must now send HMRC quarterly updates as well as a final declaration, through approved software.
The threshold for this is due to fall to £30,000 in April 2027 and £20,000 in April 2028, so these landlord tax changes will affect even smaller portfolios gradually.
How Does Making Tax Digital Affect HMRC Rental Income Tax Reporting?
Under MTD, landlords must now keep digital records and file four updates a year rather than a single return. The payment deadline remains January 31st, but the reporting process has completely changed. If adjusting to these requirements coincides with your remortgage, we recommend speaking to a broker, such as Stuart Brown Mortgage Services, who understands how lenders read your rental figures.
What’s Changed with Capital Gains Tax and Stamp Duty?
Landlords who sell a buy-to-let will pay Capital Gains Tax at a rate of 18% or 24%, the rate depends on their income tax band. There is a £3,000 annual exemption and a strict 60-day reporting window from completion. The 5% stamp duty surcharge on additional properties remains in place. Anyone looking to purchase a rental property should factor this into affordability from day one. Our buy-to-let mortgage page explains this in more detail.
Why Should Landlords Plan for the 2027 Income Tax Rise Now?
From April 2027, income tax on rental profits is set to rise by two percentage points. This takes the basic rate to 22%, the higher rate to 42% and the additional rate to 47%. This change was confirmed at the Autumn Budget 2025. This means landlords will see margins squeezed even further. Reviewing your mortgage structure before that date, rather than after, can make a real difference to the income that you keep.
What Should Landlords Do Next?
These landlord tax changes for 2026 and beyond make it more important than ever to look at your full financial picture, not just the mortgage. We’re not tax advisors, so confirm your position with an accountant, but we can help you plan the mortgage side with confidence.
Ready to talk it through? Get in touch with the team at Stuart Brown Mortgage Services today.
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