View up to date information on how Illinois is handling the Coronavirus Disease 2019 (COVID-19) from the
State of Illinois Coronavirus Response Site
You can view the amounts of estimated payments you have made by visiting our
1040-ES Payment Inquiry application. You will be required to enter your primary Social Security number and the first four letters of your last name.
If you have additional inquiries, you may submit them to the Questions, Comments, or Request form.