How Do I File My Self-Assessment Tax Return?

A Step-by-Step Guide to Filing Your Self-Assessment Tax Return

Filing a Self-Assessment tax return might seem daunting, but it’s straightforward when broken into steps.

1. Register with HMRC

Before filing, register for Self-Assessment to receive your Unique Taxpayer Reference (UTR). This can take up to 10 days.

2. Gather Necessary Documents

Collect:

• Income records (payslips, P60, P45)

• Expense receipts

• Tax relief documentation (e.g., pensions)

3. File Online or by Paper

• Online Deadline: 31 January

• Paper Deadline: 31 October

Use HMRC’s online service or approved software for submission. Late filing results in penalties starting at £100.

4. Pay Your Tax Bill

Payments are due by 31 January. Set up direct debit to avoid late payments.

For detailed instructions, visit HMRC’s Self-Assessment guide.