Being a landlord in the UK in 2026 comes with a tax burden that's significantly more complex than it was a decade ago. Mortgage interest relief has been phased out and replaced with a far less generous tax credit. Capital Gains Tax on residential property disposals now carries a 60-day reporting deadline. Making Tax Digital for Income Tax is pulling thousands of landlords into quarterly digital filing for the first time. And HMRC's property income compliance campaigns have become increasingly targeted.

In this environment, the landlords who pay the least tax — legally — are almost never the ones trying to manage it themselves. They're the ones working with a specialist property tax accountant who knows where the reliefs are, when to use them, and how to structure things correctly from the start.

This guide covers what every UK landlord needs to understand about their tax position in 2026 — and where getting the right advice makes the biggest practical difference.

Rental Income Tax: The Basics Every Landlord Must Know

If you receive rental income in the UK, you are legally required to declare it to HMRC — regardless of whether you make a profit, whether the property is in your name alone or jointly owned, and whether you're a UK resident or based overseas.

Rental income is taxed as part of your overall Income Tax liability. After deducting allowable expenses from your gross rental income, the remaining profit is added to any other income you receive — from employment, self-employment, pensions, or dividends — and taxed at your marginal rate. For 2025/26 and 2026/27, that means:

• Basic rate taxpayers — 20% on rental profit within the basic rate band
• Higher rate taxpayers — 40% on rental profit above £50,270
• Additional rate taxpayers — 45% on income above £125,140

If you're a higher or additional rate taxpayer with meaningful rental income, getting your tax position reviewed by landlord accountants is not optional — it's essential.

Allowable Expenses: What You Can and Cannot Deduct

This is the area where most landlords either leave money behind or, worse, claim things they shouldn't. The distinction HMRC draws is between revenue expenses (deductible) and capital expenditure (not immediately deductible but relevant to CGT calculations later).

Allowable revenue expenses include:

• Letting agent fees and property management charges
• Buildings and contents insurance premiums
• Maintenance, repairs, and replacements (like-for-like — not improvements)
• Ground rent and service charges for leasehold properties
• Accountancy and professional fees
• Advertising costs to find new tenants
• Utility bills and council tax you pay on behalf of tenants or during void periods
• Telephone and travel costs directly related to the rental business

What you cannot deduct against rental income:

• The capital element of mortgage repayments
• Property improvements (extending, converting, or upgrading beyond the original standard)
• Personal expenses

Mortgage Interest — The Rule That Catches Most Landlords

The old system, where individual landlords could deduct 100% of mortgage interest costs against rental income, was abolished between 2017 and 2020. Since April 2020, individual landlords can no longer deduct mortgage interest at all from their rental income. Instead, they receive a 20% tax credit on their finance costs — which means higher and additional rate taxpayers have taken a significant effective tax increase even when their actual rental profit hasn't changed.

This has pushed many landlords toward structures they hadn't previously considered — from incorporation into a limited company (where mortgage interest remains fully deductible as a business cost) to reviewing property ownership between spouses. Our tax advisory team regularly reviews these structures for landlords to identify whether a change would generate meaningful savings, given that incorporation itself has upfront costs and stamp duty implications that need to be factored in.

Capital Gains Tax on Property: The 60-Day Rule and How to Reduce Your Liability

When you sell a UK residential property that is not your main home — a buy-to-let, a second property, or an inherited property — you'll almost certainly have a Capital Gains Tax liability on the gain.

The rules that apply in 2026:

• CGT rate on residential property — 18% for basic rate taxpayers, 24% for higher and additional rate taxpayers (rates confirmed in the October 2024 Budget)
• Annual CGT exemption — £3,000 per individual for 2025/26 and 2026/27
• 60-day reporting deadline — from the date of completion, a UK property CGT return must be filed with HMRC and any tax due paid. Missing this deadline results in automatic penalties

This 60-day window is tighter than many landlords expect, particularly if the sale involves complex ownership structures, renovations, or periods of personal use. The calculation itself requires careful treatment of the original purchase price, acquisition costs, improvement expenditure (capital costs from above), and disposal costs — all of which reduce the taxable gain.

Capital Gains Tax services from Hayes cover the full process: calculating the exact gain, identifying every available relief, filing the 60-day return with HMRC, and — critically — advising in advance of completion where the timing or structure of the sale can be arranged to reduce the tax owed.

Reliefs Worth Knowing:

• Private Residence Relief (PRR) — if the property was your main residence for part of the ownership period, that proportion of the gain is exempt. The final nine months of ownership always qualify even if you've moved out
• Letting Relief — where PRR applies and the property was let, a further relief may be available (though now restricted to periods of shared occupancy)
• Spousal Transfers — transfers between spouses on divorce or as part of estate planning carry their own set of CGT considerations, and timing matters enormously

Making Tax Digital for Landlords: What Changes in 2026 and Beyond

Making Tax Digital for Income Tax (MTD for IT) is not just a concern for sole traders. Landlords are directly in scope — and many have already been brought into mandatory digital filing from 6 April 2026.

The income threshold that determines when you must comply:

• From April 2026 — mandatory if gross rental income (plus any self-employment income) exceeded £50,000 in 2024/25
• From April 2027 — threshold drops to £30,000
• From April 2028 — threshold drops to £20,000

Under MTD, landlords must keep digital records and submit quarterly updates to HMRC through compatible software, in addition to a Final Declaration at year-end. The annual paper Self Assessment return is replaced entirely for those in scope.

For landlords with multiple properties, the record-keeping requirements are more complex — income and expenses need to be tracked at property level in many cases. For landlords who also have self-employment income, the combined qualifying income figure is what determines MTD eligibility, which catches many who assumed rental income alone placed them under the threshold.

Hayes provides a complete Making Tax Digital service covering eligibility checks, HMRC registration, software setup, quarterly submissions, and the Final Declaration — all managed on your behalf. If you're still under the threshold, we continue to handle your Self Assessment tax return while keeping MTD preparedness in view.

Furnished Holiday Lets: A Changing Landscape

Until April 2025, Furnished Holiday Lets (FHLs) occupied a uniquely advantageous tax position — they qualified for Capital Allowances on furniture and equipment, allowed mortgage interest to be deducted in full, and profits counted as earnings for pension contribution purposes.

That all changed on 6 April 2025, when the FHL tax regime was abolished. Properties previously treated as FHLs are now taxed as standard rental properties — meaning the mortgage interest restriction now applies, Capital Allowances are no longer available on furniture, and the pension contribution treatment has changed.

If you own a short-term holiday let property, the tax position you operated under in previous years may no longer apply. Our landlord accounting team can review your position, confirm exactly what changed, and identify what planning options remain available.

Structuring Your Property Investments Tax-Efficiently

Beyond the annual compliance cycle, there are several planning strategies that landlords with growing portfolios should be aware of:

Jointly owned property — income from jointly owned property is normally split 50/50 for tax, but married couples and civil partners can elect for a different split (using HMRC Form 17) if the beneficial ownership genuinely differs. This can be effective where one partner pays a lower rate of Income Tax.

Company ownership — holding rental properties in a limited company means mortgage interest remains fully deductible, Corporation Tax rates (25% for larger companies, 19% for smaller profits) can be lower than personal Income Tax rates, and retained profits can be extracted in the most efficient way over time. However, the transfer of existing personally held properties into a company typically triggers both CGT and Stamp Duty Land Tax, so it's rarely a simple decision. Our limited company accountants and tax advisors regularly model this for clients before any restructuring takes place.

Inheritance planning — property assets within an estate can carry significant Inheritance Tax implications. Early planning, combined with appropriate trust and gifting structures, can reduce the exposure — but it requires careful, joined-up advice across Income Tax, CGT, and IHT.