Rental Loss Carry Forward: How Landlords Use Property Losses (2026/27)
Last updated 24 June 2026 · 8 min read · By the LandlordTaxAi Editorial Team
The short answer
If your rental business makes a loss, it’s automatically carried forward and set against the next year’s rental profits of the same property business. You don’t lose it — but property losses generally can’t be set against your other income, and they vanish if the business stops. The calculator above tracks your running loss.
A loss-making year — heavy repairs, long voids, a big one-off cost — feels painful, but it isn’t wasted. The tax system lets you carry that loss forward to shelter future rental profits. The rules are specific, though, and a few traps can cost you the relief.
The calculator above shows how a loss carries forward and reduces future tax. This guide explains exactly how property losses work for 2026/27, including under Making Tax Digital. For loss-making quarters, see filing a quarter with no rental income.
Free calculator · no sign-up
Rental Loss Carry-Forward Calculator
See how a brought-forward loss reduces your taxable rental profit in 2026/27.
Result
- Taxable profit (rent − expenses)
- £11,200
- Income Tax at 20%
- £2,240
- Less mortgage interest credit (20%)
- − £1,000
- Tax due on this property
- £1,240
- Income after tax
- £9,960
Property losses carry forward against the same property business only. Estimate only.
How property losses carry forward
The rule is simple and automatic: a loss from your UK property business is carried forward and set against the first available rental profits of the same business in later years. You don’t claim it specially — it just rolls forward until it’s used up.
Because all your UK residential lettings are treated as one property business, a loss on one property can be set against profits on another within the same business.
There’s no time limit — a loss can be carried forward indefinitely until future profits absorb it, as long as the property business continues.
What you can’t do with property losses
Property losses are more restricted than trading losses, and these limits catch people out.
| Can you... | Property loss rule |
|---|---|
| Set the loss against your salary/other income? | Generally no (limited exceptions only) |
| Carry the loss back to an earlier year? | No — property losses only go forward |
| Use it after the business ceases? | No — losses are lost when the business ends |
| Carry losses into a brand-new property business? | No — old-business losses can’t transfer |
If you sell up and stop letting entirely, any unused losses are lost. Plan disposals carefully if you’re sitting on carried-forward losses.
Losses under Making Tax Digital
From April 2026, over-£50,000 landlords report quarterly. A loss-making quarter simply shows higher expenses than income — that’s normal, especially in a void or repair-heavy period.
Your overall position for the year is settled at the final declaration, where the annual loss is calculated and carried forward. Good digital records make this automatic rather than a year-end scramble.
Never waste a carried-forward loss
LandlordTaxAi tracks your property losses year to year and offsets them against future profits automatically — so every loss reduces a future tax bill.
See how it worksA worked example
Maya’s rental makes a £4,000 loss in 2025/26 (major roof repair), then a £7,000 profit in 2026/27.
| 2025/26 loss | £4,000 carried forward |
| 2026/27 profit before loss | £7,000 |
| Less brought-forward loss | −£4,000 |
| Taxable profit 2026/27 | £3,000 |
| Tax saved (e.g. at 40%) | £1,600 |
Maya’s £4,000 loss shelters £4,000 of next year’s profit, cutting her taxable profit to £3,000 — the loss works for her, just a year later.
Frequently asked questions
What happens to a rental loss?
It’s automatically carried forward and set against the next year’s profits of the same property business. There’s no time limit while the business continues.
Can I offset a rental loss against my salary?
Generally no. Property losses can usually only be carried forward against future rental profits, not your general income (with limited exceptions).
Can I carry a property loss back to a previous year?
No. Property losses can only be carried forward, never back.
Do losses survive if I sell all my properties?
No. If your property business ceases, any unused carried-forward losses are lost — plan disposals with this in mind.
Can I use a loss from a sold property against a new one?
Only if it’s the same continuing property business. Losses from a business that has ended can’t transfer into a brand-new one.
How are losses handled under MTD?
Loss-making quarters are normal; the annual loss is worked out at your final declaration and carried forward automatically.
Written and reviewed by the LandlordTaxAi Editorial Team. Our guides are reviewed against current HMRC guidance and updated when the rules change. Operated by LandlordTaxAi, United Kingdom. Follow us on LinkedIn.
Last reviewed: 24 June 2026 · Researched against primary UK sources for the 2026/27 tax year: https://www.gov.uk/hmrc-internal-manuals/property-income-manual/pim4205; https://www.gov.uk/hmrc-internal-manuals/property-income-manual/pim4210. This article is informational only and does not constitute tax advice. Check the latest details on GOV.UK or with a qualified accountant.