When prompt payment is received we allow cash discount to debtors. Similarly, we receive discount from the creditors when prompt payments are made by us. So the expected gain on account of discounts receivable from creditors in the next year should also be taken into account at the time of preparing the final accounts. Such a provision is called 'Provision for Discount on Creditors':

 It is calculated as a percentage on Sundry Creditors. The creation of such a provision, however, goes against the Conservatism Concept. Hence, it is usually avoided in practice. But you must learn how it is treated in final accounts if such a provision is required.