The IRS website has many great tax resources.

This form is used to determine federal income tax withholding.

This link is used to make a payment with the IRS.

This link is used to check your refund status with the IRS.

Direct Line: (800) 829-1040

This link is used to make a payment with the state of Missouri.

This link is used to check your refund status with the state of Missouri.

This link is used to make a payment with the state of Illinois.

This link is used to check your refund status with the state of Illinois.

Direct Line: (800) 732-8866

Social Security Administration administers retirement, medicare, disability and other benefits

U.S. Department of Commerce

A catalog of Free and low-cost federal publications that may be of interest to you. Also contains important consumer information