Hi @BanksyBoy
With an overpayment, there’s two options you can do first of all with the allocation.
If it’s to an invoice, you can select the ‘pay multiple’ option when tagging it, pay off the invoice and allocate the rest to the client account:
And then:
If it’s unassigned and you’re on the cash accounting VAT scheme, then this will default to recording the overpayment at 20%.
If there’s no invoice, then obviously you just allocate it to their account rather than an invoice.
Then, regarding the refund, you go into the payments (Sales >> View payments), find the payment you’ve just tagged, and view it:
You will then see a ‘refund payment’ option:
Hope that helps!