Form 1099-G information is available online at DOR.MO.gov with a secure connection. Click the 1099-G Inquiry link under the Personal Tax heading near the bottom-left of the home page. Form 1099-G information is also accessible by telephone 24 hours a day at 573-526-8299.
The Missouri Department of Revenue does not mail Form 1099-G. Instead, a postcard is mailed to the taxpayer explaining how to access 1099-G information online. Both the online and telephone methods require the first four digits of the taxpayer's Social Security number, as well as the five-digit ZIP code and filing status on the most recent tax return