Amount owed to HMRC: £10,374.97. Payment on account for 2020/21: £5,187.49.
Total Self Assessment due by 31st January 2021: £15,562.46.
A further payment on account due by 31st July 2021: £5,187.49.
This does not include any payments on account you may already have made for the 2019/20 tax year.