The £1,000 property allowance can wipe out tax on small amounts of rental income, or replace your actual expenses when claiming it leaves you better off.
The property allowance is a small but useful relief that can remove tax on modest property income altogether, or act as a simple alternative to itemising expenses. At £1,000 for 2025/26 it will not change the maths for a serious landlord, but for anyone earning a little from property it can mean no tax and, often, no need to report at all.
The property allowance can be used in two ways, and you pick whichever helps most:
You cannot claim the £1,000 allowance and your real expenses for the same property business; it is one or the other. For most landlords, actual expenses on a mortgaged buy-to-let easily beat £1,000, so they ignore the allowance. Our rental income calculator compares both routes.
Suppose Nadia occasionally lets out a parking space and a storage unit, earning £1,400 of property income in 2025/26 with almost no costs (just £150 of incidental expenses).
Option A, claim actual expenses: taxable profit = £1,400 minus £150 = £1,250.
Option B, claim the property allowance: taxable profit = £1,400 minus £1,000 = £400.
Option B is clearly better, cutting her taxable profit by £850. As a basic-rate taxpayer that saves her £170 in tax.
Now compare a landlord like her friend Tom, who lets a flat for £12,000 with £4,000 of genuine expenses. His actual expenses (£4,000) far exceed the £1,000 allowance, so he claims the real costs and ignores the property allowance entirely. The allowance only wins when your costs are below £1,000.
The property allowance sits alongside two related reliefs. For income from a property you let normally, see rental income for how profits are taxed once you go beyond the allowance. There is also a sister relief for self-employed and casual earnings, the trading allowance, which works identically at £1,000 but for trading rather than property income. If you have both property and trading income, you can use each £1,000 allowance separately.
If you let a furnished room in your own home, rent-a-room relief of £7,500 is usually far more valuable than the property allowance, and you should consider that instead.
The property allowance is a quiet win for people with tiny amounts of property income: a parking space, a bit of storage, the odd let. Above a thousand pounds of costs, though, claim your real expenses.
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