For the year 2021-2022, I had less than £5,000 salary income which has already reported via PAYE. Recently when I checked my old bank statement, I found a foreign stock dividend which is around £200 and I didn't report it via Self Assessment. As my total income is less than the personal allowance, am I still required to submit a self assessment? if yes, via paper form or online portal? any penalty (even there is no tax due)? Looking forward for your reply. Thank you.