Online Credit Inquiry System

The online credit inquiry system is no longer available for sales, use and employer withholding. The Department implemented a new portal service called MyTax Missouri, on September 6, 2017 at https://mytax.mo.gov. The new service will allow you to register a portal account to file and track Sales, Use, and Employer Withholding Tax, and Tire and Lead-Acid Battery Fee returns and payments and has many more features. The new service will allow you to view your available overpayment information. Please check the website for information on how to access your account overpayment information through this new service.