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The SA105 form is a document you need to fill if you have to pay tax on income from property in the UK.
Use it for rental income from properties in the UK (including Airbnb) or income from letting furnished holiday accommodation in the UK or EEA.
It’s not used for the following income:
You can find the SA105 form on this HMRC page:
If you usually file a Self Assessment tax return every year, then HMRC might also send it to you.
In any case, make sure you first read the “UK property notes” pdf for that tax year – it’s on the same HMRC page. It explains what each line item from the SA105 form means.
You need to attach it to your SA100 form – you can’t file it by itself.
No. You will only need to file the SA105 form if you decide to submit your tax return in paper format.
Here’s why we don’t recommend it doing this:
If you file online, here are the dates to keep in mind.
Key dates in the current 2025/26 tax year 👇
Deadline | Date | Year |
Tax year starts | 6th April | 2025 |
Tax year ends | 5th April | 2026 |
Register for self assessment | 5th October | 2026 |
Pay tax bill by PAYE salary | 30th December | 2026 |
Self assessment deadline | 31st January | 2027 |
At TaxScouts we can file your tax return online for you instead – and for a flat fee of just £169, regardless of how many types of income you have.
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