As a cash posting specialist, you may work in financial services firms or accounting departments in a variety of industries, including health care. Your primary responsibilities are to receive and post payments on accounts, process refunds, make adjustments to customer invoices, and manage accounts. Other duties include researching and resolving discrepancies and keeping accurate accounting records. You may also open, process, and file incoming mail, answer phone calls related to accounts, and work closely with the administration to ensure accounts are up-to-date and paid on time.