For UK landlords, 2026 is not a year for complacency. A cluster of significant tax and regulatory changes, some taking immediate effect, others bedding in over the next two years, is reshaping the financial landscape for property investment. Whether you own a single buy-to-let or a substantial portfolio, the combination of new digital reporting obligations, higher income tax rates on rental profits, tighter Capital Gains Tax, an increased Stamp Duty surcharge, persistent mortgage interest restrictions, and the abolition of Section 21 evictions demands careful attention and, in most cases, early professional advice.
This article sets out the key changes you need to understand now.
Making Tax Digital for Income Tax: Mandatory From April 2026
The most immediate change for many landlords is the introduction of Making Tax Digital for Income Tax Self-Assessment (MTD for ITSA), which becomes mandatory from 6 April 2026.
Under MTD, landlords with total gross income from property and self-employment combined exceeding £50,000 in the 2024/25 tax year must replace the traditional annual Self Assessment return with a new digital reporting regime. This involves keeping digital records using HMRC-recognised software and submitting quarterly updates to HMRC due by 7 August, 7 November, 7 February, and 7 May. After the four quarterly updates, landlords must submit an End of Period Statement finalising the year’s figures, followed by a Final Declaration by 31 January. The payment deadline does not change; MTD changes how you report, not when you pay.
HMRC has confirmed that landlords joining MTD in April 2026 will not receive penalty points for late quarterly updates during the first 12 months, providing a transitional period to get used to the new system. From the second year onwards, a points-based penalty regime applies: each missed quarterly or annual submission attracts a penalty point, and a £200 financial penalty is triggered once four points have accumulated.
If your property is jointly owned, your qualifying income is assessed based only on your individual share. If that share alone does not breach the £50,000 threshold, you will not be caught in 2026/27, though you may be in future years as the threshold reduces.
The threshold will step down further to £30,000 from April 2027 and to £20,000 from April 2028, meaning the majority of landlords will eventually be brought within the system. Landlords operating through a limited company are not affected by MTD for Income Tax at this stage.
The Section 24 Mortgage Interest Restriction: Still in Force and Here to Stay
For any landlord who has not yet fully adjusted their financial model to account for Section 24, now is the time to do so. The restriction, which replaced full mortgage interest deductibility with a 20% basic-rate tax credit for individual landlords, has been fully phased in since 2020, and there is no indication from the government that it will be reversed. The scheduled rise in property income tax rates from April 2027 reinforces the direction of travel. Landlords operating highly geared portfolios in their personal names should carefully model the impact, both under current rules and post-April 2027.
Higher Income Tax Rates on Rental Profits: April 2027
This change will have the most significant long-term financial impact on individual landlords, and while it does not take effect until April 2027, planning must begin now.
As announced at Budget 2025 and set out in the Finance Bill currently before Parliament, which is expected to receive Royal Assent imminently, the government is introducing separate rates of income tax specifically for property income from 6 April 2027. The new rates will be two percentage points higher than the standard income tax rates applied to employment, trading, or pension income. From April 2027, the property basic rate will be 22%, the property higher rate will be 42%, and the property additional rate will be 47%.
For context, a higher-rate taxpayer with £20,000 of annual rental profit will pay £400 more in income tax per year as a direct result of this change. A basic-rate taxpayer on the same rental profit will pay an additional £200.
The change also affects the mortgage interest relief position. Finance cost relief for unincorporated landlords — which under Section 24 has since 2020 been restricted to a basic-rate tax credit — will be recalculated at the new property basic rate of 22% from April 2027, rather than the current 20%. This means the relief will increase very slightly for heavily geared landlords, partially offsetting the rate rise for those with significant mortgage costs.
The government has also confirmed that income tax thresholds will remain frozen until 2031/32. As rents and incomes rise, this fiscal drag effect will pull more landlords into higher tax bands without any change in the headline rate. The combined impact of frozen thresholds and higher property income rates will be felt across portfolios of all sizes.
Stamp Duty Land Tax: Higher Surcharge Now in Force
A change already in effect that directly affects any landlord acquiring property is the increase in the Stamp Duty Land Tax additional dwellings surcharge. From 31 October 2024, the surcharge on purchases of additional residential properties, buy-to-lets, second homes, and any property purchased where the buyer already owns another residential property increased from 3 percentage points to 5 percentage points above the standard residential SDLT rates. This is a confirmed enacted law and applies to all completions from that date.
From 1 April 2025, the standard SDLT residential thresholds also reverted to pre-2022 levels. The nil-rate band, the portion of a purchase price on which no SDLT is payable, has been reduced from £250,000 back to £125,000 for most buyers. These two changes compound each other. A landlord purchasing a buy-to-let at £300,000 now pays SDLT on a larger portion of the purchase price at a higher surcharge rate than would have applied two years ago.
To illustrate the combined effect: on a £300,000 buy-to-let purchase in 2025/26, the SDLT calculation applies the standard residential rates plus the 5% surcharge across the relevant bands resulting in a materially higher acquisition cost than under the previous regime. For landlords with active acquisition plans, accurate SDLT modelling at the outset of any transaction is essential.
Capital Gains Tax: Lower Allowance, Higher Rates, Tighter Reporting
Capital Gains Tax on residential property has become significantly more complex in recent years and remains a major consideration for any landlord planning a disposal.
The annual CGT-exempt amount stands at £3,000 for 2025/26, down sharply from £12,300 in 2022/23. For landlords selling property after years of significant value growth, this reduction means a much larger portion of any gain is now subject to tax than it would have been just a few years ago.
The CGT rates on residential property gains are 18% for basic-rate taxpayers and 24% for higher-rate taxpayers, confirmed for 2025/26. It is worth noting that the higher rate was reduced from 28% to 24% on 30 October 2024, which was a modest improvement for landlords selling from that date. Still, the drastically reduced annual exempt amount has more than offset any benefit from the rate reduction for most sellers.
The 60-day reporting and payment rule means landlords cannot wait until their annual Self Assessment return to settle CGT on the sale of a property. When completion occurs on a residential property disposal that generates a CGT liability, the gain must be reported and the estimated tax paid within 60 days of the completion date, using HMRC’s online Capital Gains Tax on UK Property service. Missing this deadline results in an automatic £100 penalty, with daily penalties and interest accruing for longer delays.
For landlords planning disposals, careful timing around tax years, use of both spouses’ CGT allowances where the property is jointly owned, and thorough documentation of capital improvements and allowable costs are all practical steps that can meaningfully reduce liability. Professional advice well in advance of any sale is strongly recommended.
Incorporation: A Frequently Considered Option — With Important Caveats
With individual landlords facing Section 24 restrictions, higher income tax rates from 2027, a lower CGT exempt amount, and a higher SDLT surcharge on new acquisitions, many landlords are considering transferring their portfolios to a limited company structure. Companies continue to receive full relief on finance costs, pay corporation tax at 19% on profits up to £50,000 or 25% on profits above £250,000, and their shareholders can choose how profits are extracted.
However, incorporation is not a straightforward decision. Transferring property into a company can trigger a CGT event on the accrued gains in the portfolio unless specific incorporation relief applies. The 5% SDLT surcharge may also be payable on the transfer, depending on the structure and whether any mortgage debt is involved. Lender consent will typically be required, often necessitating refinancing. From 6 April 2026, incorporation relief must be actively claimed in the Self Assessment return for the year of transfer, rather than applying automatically as it has previously. This change, confirmed in the Finance Bill, introduces new procedural requirements and makes correct documentation and timing essential. HMRC may also challenge the availability of incorporation relief if the activity is considered a passive investment rather than a trading business, making professional advice and thorough documentation essential.
There is no single answer to whether incorporation makes sense for any given landlord. The right approach depends on portfolio size, existing mortgage arrangements, personal income position, and long-term intentions. We would always recommend a full modelling exercise before taking any action.
The Renters' Rights Act 2025: Tax and Cashflow Implications
The Renters’ Rights Act received Royal Assent on 27 October 2025, and its principal provisions take effect from 1 May 2026. This legislation is primarily a regulatory rather than a tax measure, but its financial implications for landlords are real.
The most significant change is the abolition of Section 21 no-fault evictions. From 1 May 2026, all evictions must proceed under the updated Section 8 grounds, including the sale of the property, the landlord moving in, or serious rent arrears. All existing fixed-term Assured Shorthold Tenancies will simultaneously convert to periodic tenancies.
For landlords, this affects financial planning in several ways. The ability to bring a tenancy to a swift end when planning a sale, and therefore to time a disposal for tax-planning purposes, is materially constrained. Landlords planning to sell should factor in longer lead times and the possibility that the property will need to be sold with a sitting tenant. For estate planning purposes, longer tenancy obligations can delay portfolio rationalisation and complicate gifting or succession planning.
From a compliance perspective, landlords must also provide all tenants with a government-produced information sheet by 31 May 2026. The Private Rented Sector Database and Landlord Ombudsman scheme will be phased in from late 2026 onwards, with registration on the Database mandatory for all private landlords.
Income Tax Threshold Freeze: The Quiet Tax Increase
While not a new announcement, landlords must understand the extended threshold freeze in the context of the other changes described above. Income tax thresholds have been frozen since 2022, and the government has confirmed they will remain frozen until 2031/32. For landlords whose rental income rises in line with inflation or whose rents increase as market demand rises, this freeze will steadily shift more rental profits into higher-rate bands. The effect is gradual but cumulative and, over a multi-year period, can meaningfully add to a landlord’s total tax liability without any single year feeling like a dramatic change.
What Landlords Should Do Now
The changes described in this article are not theoretical or distant. Several are already in force. For those coming in over the next two years, preparation time is limited, and the cost of late action missed MTD deadlines, poorly timed disposals, or incorporation without proper professional structuring can be significant.
The most important immediate steps are to confirm whether you are within the scope of MTD for Income Tax from April 2026, select compatible software and establish your quarterly reporting workflow, review your tax structure in light of the April 2027 property income rate changes, and assess any planned disposals against the CGT reporting requirements and current allowances, for landlords with complex portfolios or those considering incorporation, early engagement with a specialist accountant is the most valuable investment you can make.
Conclusion
The scale and pace of change facing UK landlords is unlike anything seen in recent decades. Within the space of a few years, the tax treatment of rental income has been fundamentally restructured: mortgage interest relief has been curtailed, CGT allowances have been slashed, SDLT costs have increased, and income tax rates on property profits are set to rise further still. At the same time, the regulatory burden has grown substantially, with MTD bringing new compliance obligations and the Renters’ Rights Act reshaping the practical realities of managing a tenancy. None of these changes is a reversal of temporary measures. They represent the settled direction of government policy, and landlords who approach their portfolios based on the tax environment that existed five years ago are exposed to significant risk. The landlords best placed to navigate what lies ahead are those who understand the rules in detail, plan their affairs accordingly, and take professional advice before making decisions rather than after.
