How do you file a Self-Assessment Tax Return?

The first step to file a Self-Assessment Tax Return service requires HMRC registration for obtaining your Unique Taxpayer Reference (UTR). You must log into your HMRC account using provided credentials to complete the online form while entering all financial information including revenue and spending details accompanied by deductions. The deadline for paper form submission exists before the earlier filing date. Your declarations should be accurate because errors will lead to penalties. The tax calculation together with your payment deadline becomes available after submission. Accounting software or external professional accounting help will simplify your tax return and ensure you meet all requirements.