When making a Corporation Tax payment you'll need to provide your Corporation Tax reference number. This is shown on the bottom line of your payslip on the left-hand side. The reference number is made up of 17 characters, for example: 1234567890A00199A.
Your reference number is specific to the accounting period for which you are paying so please quote exactly.
To check that your reference number is correct, please enter it below then click on the 'Check reference' button.