Paying tax on one-off freelance income

greenchicken

Hello, hope this is the right forum.

I have always worked on PAYE jobs so have never had to file a tax return. However last year, between ending one job and starting another, I did some freelance work for which I was paid £1950. I registered as self employed on the HMRC website, but am now back working in a full-time job and pay tax via PAYE.

Is there any way I can just pay off the relevant tax on that £1950 now/soon, or do I need to wait a year for the next tax return? Will I have to do a full tax return just because of that one payment? I've never had to do it before so am bad at keeping records, so am dreading having to do it because of one payment.

Any advice much appreciated.