Prepare bills and send them out to clients.
Compiles data from vendor invoices and supporting documents to verify accuracy of billing data and to ensure receipt of items ordered, using calculator and computer: Compares invoices against purchase orders and shipping and receiving documents to verify receipt of items ordered. Reads computer files or computes figures to determine prices and discounts, following invoices and credit memorandums, and using calculator. Records data in control records. Contacts vendors or buyers regarding errors in partial or duplicate shipments, prices, and substitutions. Maintains file of returnable items received from or returned to vendors. Writes check or prepares voucher authorizing payment to vendors.