Generate invoices. Create and maintain open communications with clients to answer billing related questions. Perform customer account reconciliations / rectify problems necessary for final billing. Communicate effective with internal departments regarding billing issues. Posting of RMA batches. In-depth knowledge of client billing requirements (billing frequency, bill format, special cost rates, tax codes). Maintain all current exempt and resale certificates. Billing for customs/duties. Entering any credits as needed. A/P experience *a plus. Filing.