Self Assessment Guide: Registration, Tax Returns, and Payments

May 12, 2026 · WOWERI

Learn about registration, tax returns, and payments for Self Assessment. Get help and support from HMRC.

Introduction to Self Assessment

Self Assessment is a system that allows individuals and companies to report their income and pay taxes. If you are an individual or company that needs to file tax returns, you must register for Self Assessment.

Registering for Self Assessment

To register for Self Assessment, follow these steps:

1. Register on the HMRC website: go to the HMRC website and register using your name, address, and other required information.
2. Apply for a unique taxpayer reference number: after registering, you will be assigned a unique taxpayer reference number, which you must use when filing tax returns.

Tax Returns and Payments

After registering for Self Assessment, you must file tax returns and pay taxes on time. Tax return deadline: usually January 31st of each year, but may vary depending on individual circumstances.

Help and Support from HMRC

HMRC offers various resources to help you with Self Assessment, including:

• Email updates: HMRC sends email updates and reminders about important dates.
• Videos and webinars: HMRC offers videos and webinars that explain the Self Assessment process and provide helpful tips.
• Phone support: you can contact HMRC by phone to get help and answers to questions.

Source: gov.uk