Some customers are exempt from paying sales tax under Illinois law. Examples include government agencies, some nonprofit organizations, and merchants purchasing goods for resale. Sellers are required to collect a valid exemption or resale certificate from buyers to validate each exempt transaction.
Illinois state income tax Illinois has a flat income tax rate of 4.95%. However, the state doesn't tax retirement income, meaning Social Security benefits, pensions, IRA, and 401(k) distributions are state tax-exempt. However, Illinois does tax: Investment income.
Many states exempt most services, including construction labor. Thus, sales tax generally doesn't apply to construction services in Illinois, Minnesota, and Pennsylvania.