There are a number of reasons why you might need to complete a Self-Assessment return. This includes if you are self-employed, a company director, have an annual income over £100,000 and / or have income from savings, investment or property.
Taxpayers that need to complete a Self-Assessment return for the first time should inform HMRC as soon as possible. The latest date that HMRC should be notified is by 5 October following the end of the tax year for which a Self-Assessment return needs to be filed.
HMRC has an online tool www.gov.uk/check-if-you-need-tax-return/ that can help you check if you are required to submit a Self-Assessment return.
The list of taxpayers that are usually required to submit a Self-Assessment return includes: