The balancing payment for 2019/21 due on 31 January 2021 comprises the total tax liability (income tax, class 4 NIC, class 2 NIC and CGT) less payments on account for the tax liability (income tax and class 4 NIC) of 2018/19.
What if the payments on account (being deducted) are higher than the total tax liability?
For instance, the first example given in chapter 15 has a balancing payment of £3,200 after deducting the POAs of £13,000. What would the outcome be if the POA was £17,000?