We are paid with a payment certificate each week which has measured works and then a retention taken off , Vat added and the 20 % Labour tax taken off. I want to enter these on sage as a sales invoice going to 4000 , but do i put a credit note through for the 20% tax so when i enter the bank payments the amounts will match and i can then reconcile the bank? But which noimal code do i put the credit through to? Thanks