A method of accounting for postage charges in respect of batches of mail items is disclosed. The method includes storing an accumulated aggregate value of postage dispensed in applying postage charges to mail items and storing an accumulated pending value of postage dispensed in applying postage charges to mail items of a batch of mail items which has not been completed. In response to completion of the batch of mail items, the accumulated pending value is decremented by a value of postage relating to the completed batch of mail items.