Auditors might also need to test for the correct classification of cash. Some cash balances, such as cash balances that are restricted from use due to contractual agreements or cash equivalents that have been pledged as collateral, have complicated rules related to disclosure and classification. In some cases, these balances should not be listed as cash on the balance sheet and might need to be listed as investments or restricted cash. If your business is subject to an audit and you have any contractual obligations related to cash collateral, be sure to examine these agreements to ensure proper classification.