Do landlords need to file a Self Assessment tax return?

Short answer: if your rental profit is over £2,500, or your rent is over £10,000 before expenses, yes. Between £1,000 and £2,500 you usually just tell HMRC, and if you live abroad and let out a UK property, different rules apply. Here's where the lines actually sit.

The £1,000 question

Every individual gets a £1,000 property allowance per tax year. If your total rental income (income, not profit) is £1,000 or less, it's tax-free and you generally don't need to tell HMRC at all. Over £1,000, you'll either deduct the £1,000 allowance or your actual expenses, whichever leaves you better off, and you need to tell HMRC. Whether that means a full return depends on the amounts below.

When a landlord must file

• UK rental profit over £2,500 after allowable expenses, or rental income over £10,000 before expenses, in the tax year (6 April to 5 April). Rent over £10,000 means a return even if expenses cut your profit right down. If your rental income is over £1,000 but up to £2,500, contact HMRC instead; you don't usually need a return for that alone.
• You're a non-resident landlord, living abroad with UK rental property. You file under the Non-resident Landlord Scheme rules, and letting agents (or tenants) may have to withhold tax unless HMRC approves gross payment.
• You sold a UK residential rental property and there's Capital Gains Tax to pay. You must report and pay it within 60 days of completion, and if you're registered for Self Assessment the sale goes on your return too. If you're not UK resident, you must report every sale of UK property within 60 days, even with no tax to pay.
• Rent-a-room: lodger income over £7,500 a year (£3,750 each for joint owners) needs a return; under it, the relief usually covers you automatically.

What you can deduct

Letting agent fees, repairs and maintenance (not improvements), landlord insurance, ground rent and service charges, accountancy fees, and replacement of domestic items. Mortgage interest no longer comes off rental profit directly. It gives a 20% tax credit instead, which catches out higher-rate taxpayers who remember the old rules.

Making Tax Digital has already started for larger landlords

Since 6 April 2026, landlords and sole traders whose qualifying income (property and self-employment income, before expenses) was over £50,000 in 2024/25 have had to use MTD for Income Tax. The threshold drops to £30,000 from April 2027 (based on 2025/26 income) and £20,000 from April 2028 (based on 2026/27 income). If that is you it has already begun: the first quarterly deadline was 7 August 2026, and the annual-return habit is now four quarterly updates for each property or trading business, plus the tax return. If you missed 7 August, send it now: HMRC won't apply penalty points for late quarterly updates in 2026/27, but all four have to be sent before you can file the return. The next deadline is 7 November 2026. Our MTD guide explains the timeline.

Deadlines and penalties

Register for Self Assessment by 5 October after the end of the tax year you first need to file for (or reactivate by then, if you're registered but didn't need to file for the previous year). The online return and payment are due 31 January. Miss it and there's an automatic £100 penalty even if you owe nothing, with daily penalties stacking after three months.

This guide is general information, not tax advice, and reflects our understanding of the rules as at September 2026. Your circumstances may differ, so please get specific advice before acting.