Self-Assessment Questionnaire
Tax Year 2024-25
A Self-Assessment tax return declares all your income for the tax year, including income that has already been taxed at source. If you have paid too much tax during the year you’re likely to receive a rebate.
The tax year for every individual in the UK runs from 6th of April to the 5th of April the following year. For example, the 2024/2025 tax year runs from the 6th April 2024 to 5th April 2024.
If you owe tax on your Self-Assessment tax return you will have until the 31st January to pay it. If the amount you owe is more than £1,000, HMRC will estimate the following year's tax bill (based on the previous year) and you will be required to make Payments on Account (POA) for the following year on top of the outstanding tax. Payments on Account are made in 2 instalments, 50% payable by the 31st January and the other 50% payable by the 31st of July.
A Self-Assessment tax return is separate to a company tax return.
A Unique Tax Reference (UTR) is your personal reference that identifies you in your personal capacity at HMRC. It is used to file your return and pays a tax that is due. Like a National Insurance number once you have a UTR number it’s yours for life. It will be on any documentation from HMRC dealing with your Self-Assessment. It has 10 digits and is usually shown with a space in the middle (sometimes followed by a K). For example, “15555 95233 K” (It is sometimes referred to as ‘Our Ref’ and shown as the payment reference on cheques relating to Self-Assessment).
If you do not have a UTR number you will need to register for one at HMRC. With your permission, we can complete the registration for you. For help on how to do this or other UTR questions please contact us.