No UTR number before tax return deadline

Since it is my first time doing self-assessment , I missed the deadline and just registered to get UTR number. It is very likely that I won’t be able to submit tax return online by 31 Jan 2024, what should I do? What will be the penalty? It is totally my mistake. I am really sorry for making it last minute.

Hi,

When the notice to file your Self Assessment is issued you have 3 months to submit the tax return before late filing penalties are charged. You can find guidance on penalties here:

Self Assessment tax returns

Any payment due would be due by 31 January. 

Thank you.

Yes, but you won't let us pay before 31st January if we haven't got a UTR number