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About the Landlord Tax Return Checker

Landlords report rental income on the UK property pages (SA105) of a Self Assessment return. Common mistakes include claiming mortgage interest as an expense, or putting improvements in as repairs.

This checker goes through the property pages step by step, works out the Section 24 tax credit and highlights common errors before you file.

Common checks

Mortgage interestGoes in the residential finance costs box, not with expenses
Repairs or improvementsImprovements aren’t revenue expenses
Property allowance£1,000 allowance can be used instead of actual expenses
Joint ownershipOnly your share of rent and costs

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Landlord Tax Return Checker

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Landlord tax return questions

What is the SA105?

The UK property pages of the Self Assessment tax return, where landlords report rent, expenses and residential finance costs.

When is the Self Assessment deadline?

31 January after the end of the tax year for online returns, which is also when any tax owed is due. The tax year runs from 6 April to 5 April.

What is the property allowance?

A £1,000 tax-free allowance for property income. If your rent is £1,000 or less you may not need to report it, and above that you can choose the allowance instead of claiming actual expenses.

Education, not advice. Rules change and depend on your circumstances. Check GOV.UK and speak to a qualified adviser before you act.