ÌìÃÀÓ°Ôº

If you’ve missed Self Assessment deadlines get an estimate of how much you’ll need to pay in penalties and interest

Pay your Simple Assessment bill. Check the tax calculation from HM Revenue and Customs (HMRC) and pay any tax you owe.

Tell HMRC if you've stopped being self-employed, or you're ending or leaving a business partnership - responsibilities, tax returns, letting any employees know.

Learn more about getting started with Self Assessment including registration, tax returns, tax bills and payments.

• Updated: 27 June 2025

Find information on completing the self-employment section of your Self Assessment tax return.

• Updated: 28 May 2025

Find out what the Self Assessment for Agents online service is for, what you can do in the service and how to do it.

• Updated: 5 May 2022

Directors may need to complete an annual Self Assessment tax return. 

• Updated: 9 January 2025

Learn more about your responsibilities if you're running a small business including registration, tax returns, record keeping, tax bills and payments.

• Updated: 28 July 2025

How to report your income and claim tax reliefs and any repayment due to you using the SA100 tax return.

A trust is a way of managing assets (money, investments, land or buildings) for people - types of trust, how they are taxed, where to get help.