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If you have relatively straightforward tax affairs and already pay tax through PAYE (Pay As You Earn) you probably won't need to complete a tax return. But if you have income from self-employment or above a certain level, you may need to complete one.
The most common reasons for needing to fill in a tax return are listed below.
If you're self-employed (including being a member of a partnership) you always have to complete a return.
You must complete a return if you’re any of the following:
If you don't already complete a tax return, you'll need to do so if you receive any of the following:
If you receive a reduced age-related allowance because you are 65 but your income is over a certain level (£24,000 for the 2011-12 tax year, and £25,400 for the 2012-13 tax year), you'll need to complete a tax return. But there are exceptions, for example if your tax affairs are very straightforward. Contact the Self Assessment Helpline if you think that this applies.
You must complete a tax return if you have any foreign income that's liable to UK tax.
If you receive total income of £100,000 or more you'll need to complete a tax return. You may have higher or additional rate tax to pay that hasn't been collected through your tax code.
If you are employed and want to claim for expenses or professional subscriptions of £2,500 or more, you'll need to complete a tax return. You can just write to HM Revenue & Customs (HMRC), with full details, if you want to claim expenses below this amount.
Some less common reliefs, such as Enterprise Investment Scheme relief or relief on Venture Capital Trusts, can only be claimed by completing a tax return.
HMRC will usually write to you and explain how you can pay if you:
For example, if the amount can't be collected through your tax code or by a voluntary payment, HMRC may ask you to complete a tax return.
If you have Capital Gains Tax to pay, for example you've sold, given away or otherwise disposed of an asset such as a holiday home or shares, you'll need to complete a tax return and the Capital Gains Tax pages.
You may need to complete a tax return if you are:
Residency is a complex issue. Follow the link below to find out more about your residency status, the remittance basis and what to do next.
You'll need a tax return if you are a:
If HMRC has asked you to complete a tax return, but you've checked the sections above and think you don't need one, call the Self Assessment Helpline.
They will tell you whether you still need to complete a tax return.
If you don't complete a tax return but your circumstances change, you still need to tell HMRC. You must tell HMRC, even if you don’t think you need to complete a tax return. HMRC will decide if you need a tax return or if you can pay the tax due in some other way instead.
For example, you may owe tax as:
You need to register for Self Assessment before you can get a tax return. HMRC will use the information you provide to set up the right records for you and will send you a Unique Taxpayer Reference. You will then receive a letter each year, usually in April, telling you to complete your tax return. You can send your tax return online or on paper but there are lots of benefits to sending it online.
If you have registered for Self Assessment, received your Unique Taxpayer Reference but have not received a letter telling you to complete a tax return by the end of April, you should get in touch with HMRC.
There are different types of tax returns depending on the type of income you have. Find out more using the links below.
You can save time and paperwork by filing your return online. You'll receive an automatic acknowledgment and also find out what you owe or are due back right away, because the figures are calculated for you instantly.
Provided by HM Revenue and Customs