There are a number of reasons why a taxpayer needs to complete a Self-Assessment return. This includes if they 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.

In certain circumstances, HMRC also asks taxpayers to complete tax returns. HMRC has an online tool that can help taxpayers ascertain whether they are required to submit a Self-Assessment return.

The list of taxpayers that are likely to be required to submit a Self-Assessment return includes:

• The self-employed;
• Taxpayers who had £2,500 or more in untaxed income;
• Those with savings or investment income of £10,000 or more before tax;
• Taxpayers who made profits from selling things like shares, a second home or other chargeable assets and need to pay Capital Gains Tax;
• Company directors - unless it was for a non-profit organisation (such as a charity) and you didn’t get any pay or benefits, like a company car;
• Taxpayers whose income (or that of their partner’s) was over £50,000 and one spouse/partner claimed Child Benefit;
• Taxpayers who had income from abroad that they needed to pay tax on;
• Taxpayers who lived abroad and had a UK income;
• Income over £100,000.