TL;DR: Rental income is taxable. There is no legal way to "avoid" tax on it where it is properly chargeable, but there are several legitimate ways to reduce the bill: claiming all allowable revenue expenses, using the property allowance (1,000 pounds a year of property income tax-free), the Rent a Room scheme (up to 7,500 pounds tax-free for letting a furnished room in your only or main home), holding the property in joint names with a spouse to use both personal allowances, and structuring through a limited company in some cases. Mortgage interest on residential lets no longer comes off rental income; instead, a 20 percent tax credit applies. Furnished holiday let rules ended from April 2025. Ownership through a company changes the tax outcome and brings its own costs.
Last reviewed May 2026
"Avoid" is the word that often appears in search queries about rental income tax, but the realistic question for most landlords is how to pay no more than is actually due. The UK tax system does not allow rental income to be received without declaration; HMRC receives data from letting agents and from the Land Registry, and in recent years has been increasingly active in nudging undeclared rental income into the open through its Let Property Campaign.
What the system does allow is a series of legitimate deductions, allowances and structuring choices that reduce taxable rental income. Some are general (like using the personal allowance against rental income), some are specific to property (like the property allowance and Rent a Room), and some change the architecture of how the property is held (like joint ownership with a spouse, or a limited company structure).
This guide sets out the lawful approaches to reducing tax on rental income, the rules for each, and the trade-offs involved.
Claim all allowable revenue expenses
The starting point for any landlord is to make sure all allowable revenue expenses are claimed against rental income. Allowable expenses are those incurred wholly and exclusively for the purpose of the property letting business. The HMRC Property Income Manual lists what counts.
Common deductible expenses are letting agent fees, accountancy fees, repairs and maintenance (but not improvements), buildings and contents insurance, ground rent and service charges, council tax and utilities where these are paid by the landlord, advertising for tenants, gardening costs where the landlord is responsible, safety certificates (gas, electrical), and the cost of replacing domestic items such as carpets, curtains and white goods (the "replacement of domestic items" relief).
The distinction between repair and improvement matters: a like-for-like replacement is usually a repair (deductible), while an upgrade is an improvement (capital, not deductible against income). A new roof of better quality than the old, or replacing single-glazed windows with double-glazed, sits at the boundary; HMRC's manual gives examples.
The property allowance and Rent a Room scheme
The property allowance gives 1,000 pounds of tax-free property income each tax year. A landlord whose total rental receipts are 1,000 pounds or less in the year does not need to declare them at all. Where receipts exceed 1,000 pounds, the landlord can choose between deducting actual expenses or deducting the 1,000 pound allowance, whichever is more beneficial. The allowance cannot be used alongside actual expenses.
The Rent a Room scheme is a separate, more generous allowance for letting a furnished room in your only or main home. The first 7,500 pounds of gross rental income (before expenses) from such a let is tax-free. Where a couple share the home, the allowance is 3,750 pounds each. Above the threshold, the landlord can choose between paying tax on the excess only or on the rent less actual expenses.
The Rent a Room scheme applies to lodgers in your own home, including B&B-style hosting in some circumstances. It does not apply to letting a separate property, an annexe with separate access (in some cases), or a property you do not live in.
Joint ownership with a spouse or civil partner
Spouses and civil partners can hold property jointly and split the rental income for tax purposes. The default presumption for jointly held property between spouses or civil partners is a 50:50 split of income, regardless of the actual beneficial ownership. Where the underlying ownership is not 50:50 (for example, a 75:25 split), a Form 17 election can be filed with HMRC together with evidence of the actual beneficial ownership, allowing the income to be taxed in line with the actual split.
The advantage is that the income can be taxed in the hands of the lower-earning partner, who may have unused personal allowance or basic-rate band. A higher-rate taxpayer paying 40 percent on rental income alongside a non-taxpaying spouse can substantially reduce the household bill by reallocating ownership.
Reallocating beneficial ownership generally requires a deed of trust, and the transfer between spouses is exempt from inheritance tax and capital gains tax. There can be Stamp Duty Land Tax considerations where there is consideration (such as taking on a share of the mortgage) and conveyancing fees. Professional advice is normally appropriate before changing the structure of property ownership.
The mortgage interest restriction and how it works
Mortgage interest on residential let properties is no longer deductible from rental income. Instead, finance costs (mortgage interest, related fees) attract a basic-rate tax credit of 20 percent. The change was phased in from 2017 to 2018 and has been fully in effect since the 2020 to 2021 tax year.
The practical effect is that for a higher-rate or additional-rate taxpayer, the after-tax position on a mortgaged residential let is materially worse than under the old rules, where interest was a straightforward deduction at the marginal rate. Some landlords with high gearing have seen their effective tax rate exceed 100 percent of net rental cash flow as a result.
The mortgage interest restriction applies only to individual landlords letting residential property. It does not apply to companies (which deduct interest in the normal way), to commercial property, or to furnished holiday lets while the FHL regime was in force. The FHL regime ended for tax years from April 2025; properties previously qualifying as FHLs are now treated as standard residential lets.
Limited company structures
Holding rental property through a limited company changes the tax outcome. The company pays corporation tax on its profits (currently 19 percent on the small profits rate up to 50,000 pounds and 25 percent on the main rate above 250,000 pounds, with marginal relief in between). Mortgage interest is fully deductible inside the company.
The trade-off is that getting profits out of the company is a second taxable event. Dividends to the shareholder are taxed at the dividend rates (8.75 percent basic, 33.75 percent higher, 39.35 percent additional, after the dividend allowance) and salary is subject to PAYE. The total tax burden on extracted profits can be similar to or higher than holding the property personally, depending on circumstances.
Companies are typically more attractive for higher-rate taxpayers with multiple mortgaged properties, where the mortgage interest restriction in the personal regime is most punishing, and where profits can be retained in the company for reinvestment rather than extracted. Transferring an existing personally-held property into a company is itself a taxable disposal, with capital gains tax and SDLT consequences (subject to incorporation reliefs in some cases). Setting up a property company is a structural decision that benefits from specialist advice.
Reporting, the Let Property Campaign, and not paying penalties
Most landlords need to file a self assessment tax return that includes the property income pages (SA105). The deadline is 31 January following the end of the tax year for online returns, or 31 October for paper returns. Tax due is paid in two payments on account in January and July, with a balancing payment the following January.
Landlords who have not been declaring rental income can use the Let Property Campaign to bring their affairs up to date with reduced penalties. The campaign is HMRC's preferred route for voluntary disclosure of historic property income. Penalties under voluntary disclosure are typically much lower than those imposed where HMRC discovers undeclared income through its own enquiries.
Making Tax Digital for Income Tax (MTD ITSA) is being introduced for landlords and the self-employed, with affected landlords needing to keep digital records and submit quarterly updates to HMRC. The phased introduction by income level should be checked on GOV.UK; the requirements that apply depend on the landlord's gross income level and the tax year.
Disclaimer: This article is general information about lawful approaches to reducing tax on UK rental income. It is not personal tax, accounting or legal advice. The right approach in any particular case depends on the property, the ownership structure, the landlord's other income and circumstances, and current law. Anyone planning a structural change should take regulated tax or accounting advice and check current HMRC guidance.
Frequently asked questions
Is there any way not to pay tax on rental income at all?
Only where the income falls within an allowance or scheme. The 1,000 pound property allowance covers a modest amount of property income. Up to 7,500 pounds a year of rent from a lodger in your only or main home is tax-free under the Rent a Room scheme. Above those thresholds, rental income is taxable, and what can be done is to use deductions and structures to reduce the bill, not eliminate it.
Can I deduct my mortgage interest from rental income?
Not directly, for individual landlords letting residential property. Finance costs are no longer deducted from rental income; instead, a 20 percent tax credit is given. Companies that own residential lets continue to deduct interest in the normal way. Commercial properties also continue to allow interest as a normal deduction.
Should I put the property in joint names with my spouse?
Joint ownership with a spouse or civil partner can reallocate income to a lower-tax partner, reducing the overall household tax bill. The default 50:50 split for jointly held property between spouses can be adjusted to actual beneficial ownership using a Form 17 election. The structuring decision should be taken with professional advice, particularly where mortgages, capital gains tax history and SDLT are involved.
Are furnished holiday lets still treated differently?
The furnished holiday let regime was abolished for tax years from April 2025. Properties previously qualifying are now treated as standard residential lets, including for the mortgage interest restriction and the loss of capital allowances. Anyone affected should review the position with their accountant.
What happens if I have not declared rental income for previous years?
HMRC's Let Property Campaign is the preferred route for voluntary disclosure of historic rental income. Penalties under voluntary disclosure are usually substantially lower than under HMRC enquiry. Acting before HMRC opens an enquiry is generally the lower-cost route.
How we verified this
The treatment of rental income, allowable expenses, the property allowance and the Rent a Room scheme reflect the Income Tax (Trading and Other Income) Act 2005 and HMRC's Property Income Manual. The mortgage interest restriction reflects sections 272A and 274A of ITTOIA 2005 as introduced by the Finance (No. 2) Act 2015. The Form 17 procedure for joint property owned by spouses or civil partners is set out in HMRC's manual. The end of the furnished holiday let regime from April 2025 reflects the announcement made in the 2024 Spring Budget and Finance (No. 2) Act 2024. Corporation tax rates and the dividend tax rates reflect current published rates. Figures and rules should be reconfirmed on GOV.UK.
