I overpaid for 20/21 and have never reclaimed this back. I can this payment on my account. I need to make a payment for 21/22 and want to use the unclaimed payment to do this - but can't see a way of doing this. Will you automatically see that the overpayment from 20/21 will cover the payment for 21/22 - if so, how can I see confirmation of this? Will my account just y that there is no tax to pay?