UK Taxpayer XYZ

Thank you. Does that mean that every tax year, there could be interest charge for late payment on account? How do you know what amount to pay on account? There is only tax on for instance interest income that is not paid on PAYE basis. How to avoid these interest charges for late payment on account in 2023? I paid all taxes already under Self Assessment for 2021-22 tax year (only due Jan 31 2023, but I paid already the tax due in November 2022). Do I need to pay more now to avoid late payment charges on account in 2023? Does not seem logical to me? Thank you for clarifying.

For Tax Year 2021-22, I am employed by UK employer, under PAYE. I submitted Self Assessment Tax Return in November. Saw on my account there is interest charge of c. 100 pound for late payment on account (31 Jan 2022 and 31 July 2022). I understand that if you are in PAYE regime there is no need to pay on account? Why am I then charged Late payment interest? Thank you.