
If you let a house or flat as an individual, you pay tax on your rental profit, not your rent. This plain-English guide explains which costs you can deduct, how repairs differ from improvements, how mortgage interest is relieved and how replacement furniture is treated. It is based on HMRC's webinar "Residential property income for individuals: expenses and deductions", updated for the changes since, with links to the official guidance at the end.
A cost with a mixed business and private purpose is not allowable, unless you can separate out an identifiable part that is solely for the letting. Then you claim that part.
Restoring something to its original state is a repair and a revenue expense. Adding to or improving the property, or buying furniture and equipment, is capital and cannot be deducted from your rent.
Since April 2020, residential finance costs are not an expense in your profit. Instead you get a basic rate tax reduction. Only the interest counts, never the repayment of the loan, and any unused amount carries forward.
Revenue costs paid up to 7 years before you first let the property are treated as paid on the first day of letting, as long as they would have been allowable once the letting started.
Replacement of domestic items relief covers the cost of replacing furniture, furnishings, appliances and kitchenware for your tenant. The first purchase is not covered, and an upgrade is limited to the cost of a like-for-like replacement.
Your taxable rental profit is your gross property income less your allowable expenses. A cost is only allowable if it passes the wholly and exclusively test.
Revenue expenses are deducted from your rent. Capital expenses are not, although some capital items get relief in another way.
Day-to-day running costs, such as insurance, letting agent fees, safety certificates and repairs.
Additions and improvements to the property, and buying furnishings and equipment.
A repair restores something to its original state without improving it. Repairs are revenue expenses. Improvements are capital expenses.
Replacing something with the nearest modern equivalent, such as single glazing with double glazing, is usually still a repair. Replacing it with something that clearly upgrades it is an improvement.
If a property is not in a fit state to let when you buy it, the cost of making it lettable is likely to be a capital expense.
Work through these four questions. If you can answer yes to all of them, you can claim the cost.
Once your property business has started, costs before letting further properties in that business are treated in the normal way.
Finance costs include mortgage interest, interest on other loans (including loans to buy furnishings), and fees and other incidental costs of getting the finance. Only the interest part of a repayment counts: repaying the amount you borrowed is never allowable.
The reduction is the basic rate (20%) of the lowest of three figures: your total residential finance costs (including any brought forward), your property business profit for the year, and your adjusted total income above your personal allowance.
You can claim the cost of journeys made solely for your property business, including trips from home to the let property, whether you use your own vehicle or public transport.
Mia is staying with relatives and makes a separate, identifiable trip to her rental property. The only purpose of that trip is her rental business, so its cost is usually allowed in full.
Callum and Sue call in at their rental property on the way to visit relatives. The trip has a mixed purpose, so it is not allowable.
Keep records of running and maintenance costs and of your total and business mileage. Claim the business percentage of your motoring costs, plus capital allowances on the vehicle.
Cars and vans: 55p a mile for the first 10,000 business miles in the year (45p before 6 April 2026), then 25p a mile. Motorcycles: 24p a mile.
Residential landlords can claim the actual cost of replacing domestic items provided for the tenant. You cannot claim for the initial purchase. The relief is available whether the property is unfurnished, part furnished or fully furnished, but not for commercial properties or where you claim rent-a-room relief.
Fixtures that are part of the building, such as a boiler or a bath, are not domestic items. Replacing them is normally treated as a repair instead.
The webinar mentioned exceptions for furnished holiday lettings. Those rules ended on 6 April 2025 (1 April 2025 for companies). Former holiday lets are now part of your normal property business: the finance cost restriction applies, capital allowances are replaced by replacement of domestic items relief for new spending, the capital gains tax reliefs for business assets no longer apply, and the profits no longer count as earnings for pension relief.
Since 6 April 2026, landlords and sole traders with qualifying income over £50,000 must keep digital records and send HMRC quarterly updates using compatible software. The threshold falls to £30,000 from April 2027 and £20,000 from April 2028. Qualifying income is your gross rents and self-employed turnover, before expenses.
From 6 April 2027 property income will be taxed at separate rates of 22%, 42% and 47%, and the finance cost tax reduction will be given at 22% instead of 20%. Scottish taxpayers should check how the new rates will apply in Scotland, as income tax rates there are set by the Scottish Parliament.
Letting property and not sure what you can claim? We can review your expenses, work out your finance cost reduction, keep your records in Xero and get you ready for Making Tax Digital.
Talk to us about rental incomeThis guide is general information based on HMRC's published guidance and webinar, and is not advice for your specific circumstances. Rules change, so check the official guidance or speak to us before acting.