UK Tax on Rental Income 2025/26 — Landlord Guide

1. How rental income is classified

Rent from letting a UK property — whether a flat in Manchester, a buy-to-let house in Surrey, or a portfolio of student lets in Glasgow — is taxed as UK property income. It is not a trade and not employment income. The whole of your UK property letting activity is treated as a single property business; you pool the results of every property into one set of accounts and a single profit (or loss) figure. Overseas rentals are a separate property business, reported on SA106.

The tax year for property income is 6 April to 5 April. Accounts are normally prepared on the cash basis by default for individual landlords with gross receipts below £150,000 — you bring in rent when received and expenses when paid. You can elect into the accruals basis (matching to the period the rent relates to) if you prefer, particularly if you have material year-end debtors or creditors.

2. What counts as taxable rental income

HMRC's definition of rental income is broader than the headline rent. Include:

• Gross rent received — before the letting agent deducts their fees. The agent's fee is a separate deductible expense, not a netting-off.
• Service charges paid by tenants for items the landlord would otherwise pay (water, communal cleaning).
• Retained deposits — when you keep part of a deposit at the end of a tenancy to cover damage or unpaid rent, the retained portion is income in the year it is forfeited. Deposits held in a tenancy deposit scheme are not income while they remain returnable.
• Insurance payouts for loss of rent (under rent guarantee policies) — taxable income replacing rent.
• Premiums on short leases of 50 years or less — a portion of any premium received is taxed as income under a sliding formula. The shorter the lease, the higher the proportion taxed as income (rather than capital).
• Lease surrender payments received from a tenant to be released early.
• Income from third parties for use of land — wayleaves, mobile phone masts, hosting solar arrays (sometimes — check whether classified as trading).

Insurance payouts for damage to the building are not income — they replace capital. Money you receive for a long lease grant (over 50 years) is a capital receipt, taxed under CGT rather than income tax.

3. The £1,000 property allowance

Every individual receives an annual £1,000 property allowance. The allowance works in one of two ways depending on your gross property income:

• Gross income ≤ £1,000: full automatic exemption. You don't need to declare the income or register for Self Assessment for the property alone.
• Gross income > £1,000: you choose, on the SA105, between:
  • Allowance method: deduct a flat £1,000 from gross rents — no other expenses claimable.
  • Expense method: deduct actual allowable expenses — no £1,000 allowance.

The allowance method is simpler and best when your actual expenses are below £1,000. Most landlords with mortgages, agent fees and insurance bills will be better off claiming actual expenses. The choice is made annually and can change year to year. The allowance is per individual, not per property — if you own three properties, you get a single £1,000 against the combined gross.

Important: the property allowance is a tax-free band carved out of gross income, not an addition to your Personal Allowance. It does not extend the £12,570 Personal Allowance — it is a separate, independent relief.

4. Rent-a-Room scheme — £7,500 allowance

A completely separate and more generous relief applies when you let a furnished room in your main home. The Rent-a-Room scheme gives you up to £7,500 a year tax-free (£3,750 each if jointly let by a couple). Key rules:

• The property must be your only or main residence for at least part of the letting period.
• The accommodation must be furnished.
• The let must be of a room or rooms within the home — not a self-contained flat within the property (a basement flat with its own front door does not qualify).
• If gross receipts ≤ £7,500: automatic exemption, no need to file SA105 (unless you have other property income).
• If gross receipts > £7,500: choose between the simplified method (tax the excess over £7,500 with no expense deduction) or the actual expense method (taxed on rent minus actual allowable expenses, no £7,500 exemption).
• You can switch methods year to year by election (deadline: one year after 31 January following the tax year).

5. Allowable expenses

To be deductible, an expense must be incurred wholly and exclusively for the property business and must be a revenue (not capital) cost. The main allowable categories:

• Letting agent fees — management, tenant-find, rent collection, renewal commissions.
• Accountancy fees for preparing the property pages of your tax return (not fees for the rest of the SA return, but in practice apportioned).
• Building insurance and contents insurance for the let property (not your own home).
• Repairs and maintenance — fixing broken items, redecoration, gutter cleaning, boiler service, like-for-like roof tile replacement.
• Ground rent and service charges for leasehold properties.
• Council Tax during void periods when you are between tenants and liable as the owner.
• Utility bills paid by landlord — if the rent is inclusive of bills, the bills are deductible.
• Advertising and marketing the property to find tenants.
• Professional fees for legal services relating to lettings — drafting tenancies (not initial purchase), eviction costs, debt recovery, lease renewals under 50 years.
• Travel and motoring — actual costs (apportioned) or HMRC mileage rates (45p first 10,000 miles, 25p thereafter) for journeys to and from the let property for letting purposes.
• Mortgage arrangement fees — but not the principal repayment, and interest follows the Section 24 credit rules below.

Section 24 — mortgage interest credit

From 6 April 2020, individual landlords cannot deduct mortgage interest from rental income at all. Instead, you compute the tax on the gross profit (before interest) and then receive a 20% basic-rate tax credit equal to 20% of the interest paid. The mechanics:

• Net property profit (before interest) feeds into total taxable income at full marginal rates.
• A separate calculation produces a tax reduction equal to 20% × (the lower of: finance costs paid, property income after other expenses, or total taxable income minus Personal Allowance).
• The credit reduces your overall tax bill but never below zero — unused credit can be carried forward to later years.

For a basic-rate taxpayer the change is broadly neutral. For higher-rate taxpayers (40%) the effective tax on the interest portion of rent has roughly doubled. For additional-rate taxpayers (45%) the impact is worse still. Section 24 does not apply to limited companies, which is one of the main drivers behind landlord incorporation since 2017.

6. Improvements vs repairs vs replacements

One of the most disputed areas at HMRC enquiry. The distinction:

• Repair: restores the property to its original condition or addresses wear and tear. Deductible immediately. Examples: redecoration, replacing a damaged window with one of equivalent quality, fixing the boiler.
• Improvement / capital expenditure: enhances the property beyond its original state. Not deductible against rent. Added to the base cost for CGT when you sell. Examples: extension, conservatory, installing central heating where there was none, replacing a basic kitchen with a high-spec one.
• Like-for-like replacement of domestic items (RDIR): furnishings — sofas, fridges, freezers, washing machines, carpets, curtains, crockery — are deductible to the extent they replace an existing item of similar standard. Upgrades only get the cost of an equivalent replacement; the upgrade portion is disallowed. The initial fit-out of a newly purchased property is not deductible — only subsequent replacements.

HMRC accepts that modern equivalents count as like-for-like even when technology has improved (a modern A-rated fridge replacing an old C-rated one). Replacing a single-glazed wooden window with a modern double-glazed one is now accepted as a repair (it's the modern equivalent of the original) — but installing double glazing where there was previously none is an improvement.

7. Worked example — two-property landlord, 2025/26

8. Trade vs investment — and the end of FHLs

HMRC treats most residential letting as passive investment, not a trade. The practical consequences: rental losses can only be carried forward against future profits of the same property business (not set against general income), no National Insurance is due, the income does not count as relevant earnings for pension tax relief, and Business Asset Disposal Relief on sale is not available.

The big exception was the Furnished Holiday Let (FHL) regime: a short-stay let that met strict tests (available for letting 210+ days, actually let 105+ days, average let under 31 days) was treated like a trade. FHLs enjoyed full mortgage interest deduction (no Section 24), capital allowances on furniture and fittings, pension-relevant earnings for the owner, and CGT reliefs including BADR and holdover relief.

FHL status was abolished from 6 April 2025. From 2025/26 all previously qualifying FHLs are taxed as ordinary residential rental income — subject to Section 24, no longer relevant earnings for pensions, no BADR on sale. Transitional rules let existing capital allowance pools continue to claim writing-down allowances on assets already owned; new furniture costs after 6 April 2025 must be claimed under the standard Replacement of Domestic Items Relief rules. Losses brought forward at the transition date can still be used against the same continuing property business.

9. Joint ownership and Form 17

If two or more people own a let property jointly, the rental profit is split between them. The default split depends on the relationship:

• Married couples / civil partners: default 50/50, regardless of how the property is actually owned. To declare a different split you must hold the property as tenants in common in unequal shares, then submit a signed Form 17 to HMRC within 60 days, evidencing the beneficial ownership. The split must match actual ownership (you can't pick numbers); a Declaration of Trust is the usual supporting document.
• Unmarried co-owners: taxed on actual beneficial ownership shares by default — no Form 17 needed.

Form 17 is a powerful planning tool for couples where one earns substantially more than the other — by transferring beneficial ownership to weight the lower earner (e.g. 90/10 to a non-working spouse), more of the income falls into the Personal Allowance and basic-rate band. Note the form takes effect from the date submitted, not retrospectively, and remains in force until the underlying ownership changes.

10. Non-resident landlords

If your usual place of abode is outside the UK for six months or more, you fall under the Non-Resident Landlord Scheme (NRLS). Two routes:

• Default — deduction at source: the letting agent (or tenant where rent exceeds £100/week and there is no UK agent) must deduct basic-rate tax (20%) from the rent net of certain expenses and pay it quarterly to HMRC on form NRLQ. The landlord then files a UK Self Assessment return and claims the deducted tax against their actual liability.
• Approval to receive gross rent: the landlord applies on form NRL1 (or NRL2/3 for companies/trustees). Once approved, the agent or tenant stops withholding and the landlord settles tax via SA. Approval typically requires a good UK tax compliance history.

Non-resident landlords are still entitled to a UK Personal Allowance if they are EEA nationals or qualify under a double-taxation treaty. They are also potentially in scope for UK CGT on disposal of UK property — a separate rule introduced in April 2015 (and extended to indirect disposals in April 2019).

11. Making Tax Digital for landlords

MTD for Income Tax Self Assessment (MTD ITSA) replaces the annual SA return with quarterly digital submissions plus a final declaration. The phased schedule:

• From 6 April 2026: mandatory for landlords / sole traders with gross combined income above £50,000.
• From 6 April 2027: threshold drops to £30,000.
• From 6 April 2028: threshold drops to £20,000.

Affected landlords must keep digital records of rental income and expenses, submit quarterly updates via MTD-compatible software (Xero, FreeAgent, Hammock, Landlord Studio, etc.), and file a Final Declaration after year end to bring in non-MTD income sources (employment, pensions, savings). The threshold test looks at your share of jointly-owned property income, not the total — so a 50/50 owner of a £80,000-rent property has property income of £40,000 for the threshold test.

12. Common mistakes that trigger HMRC enquiries

• Claiming an improvement as a repair. Replacing a basic kitchen with a £20k luxury fitted kitchen is not a repair. HMRC checks invoices and inspects properties in serious cases.
• Forgetting Section 24. Still deducting mortgage interest in full from rental income, instead of computing the 20% credit. Some older tax software requires manual conversion.
• Missing the property allowance election. Continuing to claim small actual expenses (e.g. £400) when the £1,000 allowance would give a better result.
• Treating a Furnished Holiday Let as if FHL still exists in 2025/26 — claiming capital allowances on new furniture, full interest deduction, or BADR on sale.
• Splitting joint income arbitrarily without a Form 17 or matching beneficial ownership — HMRC will revert to the 50/50 default and raise an assessment for the under-declaring spouse.
• Not registering for Self Assessment by 5 October after the first year of qualifying property income — late notification penalty.
• Ignoring the Let Property Campaign when undeclared rents come to light. Voluntary disclosure penalties are dramatically lower than HMRC-prompted ones.
• Treating finder's / arrangement fees on the mortgage as repair costs — they are revenue but follow the Section 24 finance-cost rules, not normal expense deduction.

13. Where to find the rules — gov.uk references

• HMRC Property Income Manual (PIM) — the authoritative internal manual: PIM1000 onwards.
• SA105 Notes — published annually alongside the SA105 form for each tax year.
• Section 24, Income Tax (Trading and Other Income) Act 2005 — the statutory basis for the finance-cost restriction.
• Replacement of Domestic Items Relief — ITTOIA 2005 s 311A.
• Property Allowance — Finance (No. 2) Act 2017, Sch 1, introducing ITTOIA 2005 Part 6A.
• Rent-a-Room Scheme — ITTOIA 2005 Part 7 Ch 1.
• Non-Resident Landlord Scheme — Taxation of Income from Land (Non-Residents) Regulations 1995.
• MTD ITSA — Income Tax (Digital Requirements) Regulations 2021 and updates.