Michelle Greatorex

Hi, I have tried to make sense of the self help topics but can’t find the answer I am looking for for. I don’t have a state pension yet but do have a private one of 38,471 per annum gross, I pay tax on it deducted each month plus in the last financial year I have earnt £3738 in interest on some fixed rate savings accounts. When I go on line to see if I need to complete a self assessment it says I don’t ? I haven’t done self assessment for last 2 years as I only have this pension now and no longer a high earner. So my question is do I have to pay tax on the 3738 I have earnt in 23/24 and do I need to complete a self assessment form, or does it get deducted in the next financial year many thanks