MYT

1. Per 2020-2021 self assessment, I paid payment on account for tax year 2021-2022. Per the 2021-2022 self assessment tax calculation, the amount of payment on account paid was not deducted. How can I confirm the amount of tax I need to pay? 2. I forgot to pay the 2021-2022 tax and there was interest and penalty. From the calculation, the full amount of tax for the year 2021-2022 (without setting off the paid payment on account) was shown, will interest and penalty be overcharged?