POSITION SUMMARY. The basic function of the Billing Clerk is accountable for creating Invoices and Credit Memo's and issuing them to Customers by all necessary means and updating Customer files. The Billing Clerk reports to the Billing Manager. ESSENTIAL JOB FUNCTIONS. ∙ Prepare spreadsheets showing P&L on each Invoice that comes from Billing software. ∙ Review all Vendor Invoices to ensure proper coding. ∙ Review all Vendor Invoices to ensure pr...