A term associated with petty cash. Replenish means to return the amount of actual cash in the petty cash box back to the amount appearing in the general ledger account Petty Cash. This is done whenever the amount of actual cash in the petty cash box is low and at the end of each accounting period. A check is written on the company's main checking account for the needed amount. This will be a credit to Cash. The petty cash vouchers (receipts, documentation) determine the general ledger accounts to be debited. Any difference in the amounts of debits and credits goes to the income statement account Cash Short and Over.