Article I of the United States Constitution created and empowered our legislative branch of government. The United States Congress leads the legislative branch. Congress includes both the House of Representatives and the Senate. Generally speaking, Congress makes our laws.
Illinois income tax is levied at a flat 3% rate regardless of income level. A deduction of $2,000 is allowed for each exemption claimed on your federal return. You can also receive an additional $1,000 exemption if you or your spouse is 65 or older, legally blind, or both.
20 14 - 20 15. Illinois has two marginal tax brackets, ranging from 5.00% (the lowest Illinois tax bracket) to 5.00% (the highest Illinois tax bracket). Each marginal rate only applies to earnings within the applicable marginal tax bracket, which are the same in Illinois for single filers and couples filing jointly.