If you have relatively straightforward tax affairs and already pay tax from a job or pension income through PAYE (Pay As You Earn) you probably won't need to complete a tax return. But if you're self-employed, a company director or have more complicated tax affairs you may need to complete one.
If you have straightforward tax affairs you may qualify for the simpler Short Tax Return (if you do, this will be sent to you). At four pages long, the Short Tax Return is quick and easy to complete. The accompanying Short Tax Return guide is easy to follow.
The paperwork you'll need in order to complete the Short Tax Return is similar to that for the core pages and for the employment, self-employment and property supplementary pages of the full Tax Return. To find out more read the section 'Step two - complete any relevant supplementry pages' and 'Step three - complete the core and additional information pages' below.
The main Tax Return has six 'core' pages, an additional information page for less common types of income, deductions and reliefs, plus extra supplementary pages for specific types of income and capital gains. If you get the full Tax Return you'll need to:
You can complete the full Tax Return online (allow up to seven days to register) or on paper. If you file online your tax is calculated automatically on-screen, so you know what you owe or are owed right away. It'll also be dealt with more quickly.
In this case simply select the pages you need. But bear in mind that the HM Revenue & Customs (HMRC) Self Assessment software doesn't yet supply all supplementary pages online. To check which pages different filing software offers read our related article.
Check if you need any supplementary pages by answering questions one to nine on page TR 2 of the Tax Return. You can download any missing, notes and help sheets from the HMRC website, order them online or you can ring the Orderline on 0845 900 0404 and ask for the relevant pages, notes and helpsheets to be posted to you.
For the relevant tax year (6 April to the following 5 April) you'll need:
If you need to complete any of the supplementary pages below, the related guidance notes tell you what records you'll need and how to complete the forms:
You'll need paperwork for the relevant tax year as follows:
If you want to claim reliefs for retirement annuity and pension contributions and for costs like some maintenance payments or gifts to charity, you'll need records showing details of these payments.
If you are repaying a student loan and your income is over the threshold of £15,000, you can make payments through either Self Assesment or PAYE along with any tax and National Insurance Contributions (NICs).
You'll also be asked for:
In this case give an estimate instead. Explain why you don't have a final figure and say when you think you'll have it. Don't leave a box blank, or say 'details to follow', because your return will be returned to you for completion.
Remember to sign and date the last page of your paper return once everything's filled in.
Send it back to your Tax Office by 31 October (30 December if you file online and want us, if possible, to collect any tax owed of less than £2000 through your tax code).
If you still have questions on either return, call the Self Assessment helpline on 0845 9000 444 (open 8.00 am to 8.00 pm, seven days a week).