If you no longer need to file Self Assessment tax returns, you should tell HMRC.

A key part of Self Assessment is calculating your tax (and, if appropriate, self-employed National Insurance contributions and student loan repayments) due for the tax year. In most cases, HMRC perform this calculation for you based on the information you include on your tax return. 

If you were required to submit a Self Assessment tax return for a particular tax year to HMRC but you did not do so, HMRC may eventually send you a letter which sets out a ‘determination’ of the tax they think you owe for that tax year. If you failed to file more than one tax return you may get ...

Registering for Self Assessment refers to the process by which you tell HMRC that you need to send a Self Assessment tax return, if you do not already do so. Once you have registered, HMRC issue you with a unique taxpayer reference (UTR), and send you a formal notice to file a tax return for a ...

To avoid being charged a late filing penalty, make sure you understand when your Self Assessment tax return should be filed.

You must keep records to support the information you report to HMRC on your Self Assessment tax return or through Making Tax Digital for income tax. Here we look at what you need to keep, and for how long.