Property income allowance calculator, 2026/27

What the property income allowance is for

The property income allowance lets someone with modest rental income, perhaps letting a single room, a driveway, or a small holiday let occasionally, avoid the administrative burden of tracking every expense receipt. Instead of deducting actual costs from rental income, you can deduct a flat £1,000 and pay tax only on the balance, or pay no tax and often have no reporting obligation at all if gross income is £1,000 or less.

It cannot be used alongside actual expenses on the same source of income; you choose one method or the other for the tax year, and it usually makes sense to work out both and pick whichever produces the lower tax bill, which is exactly what this calculator does.

How this is calculated

The calculator works out taxable profit two ways: gross rental income less actual expenses you enter, and gross rental income less the flat £1,000 allowance (with profit floored at zero rather than allowed to create a loss). Each profit figure is then taxed at the marginal rate you select, and the calculator recommends whichever method produces the lower tax bill.

If your actual allowable expenses are below £1,000, the allowance will almost always beat deducting actual costs, because you get to shelter more income from tax than your real costs justify. If your expenses are already above £1,000, deducting them properly, and keeping the receipts to prove it, is usually the better route.

Practical points and limits

The £1,000 allowance cannot be used to create a loss to carry forward against future rental profit, unlike deducting actual expenses, which can generate a loss where costs genuinely exceed income in a given year. If you have more than one UK property, the £1,000 allowance is a single limit across your whole property business, not a separate £1,000 for each individual property.

The allowance interacts with, but is separate from, the rent-a-room scheme, which has its own, larger £7,500 allowance for letting a room in your own home; you cannot claim both allowances on the same income, so check which scheme actually applies to your situation before choosing.

Can I claim the property income allowance and deduct expenses too?

No, not on the same source of income. You must choose either the flat £1,000 property income allowance or your actual allowable expenses for a given tax year; you cannot deduct both from the same rental income.

Do I need to tell HMRC if my rental income is under £1,000?

In most cases, no. If your gross property income for the year is £1,000 or less and you have no other reason to complete a tax return, you generally do not need to report it to HMRC, though keeping basic records is still sensible.

Does the £1,000 allowance apply per property or in total?

It applies in total across all of your UK property income, not per property. If you own several rental properties, you still only get one £1,000 allowance to set against your combined property income.

Is the property income allowance the same as the rent-a-room scheme?

No, they are separate reliefs. The property income allowance is £1,000 and covers general property letting, while rent-a-room relief is £7,500 and specifically covers letting a furnished room in your own main home; you cannot use both on the same income.