I am trying to figure out dp's wages for our tax credit renewal. His 'payslips' are just a computer printout and every now and then there is a headed paper stapled to the front saying 'NIL COMMISSION' - THE TAX SHOWN ON THIS INVOICE IS YOUR OUTPUT TAX DUE TO hm CUSTOMS AND EXCISE.
There is no tax shown on the payslip though, just nett value vat value and amount due.
What does all that mean??!