
For 2024, single filers under 65 must file if their AGI exceeds $12,950, while married couples filing jointly must do Accounts Payable Management so if their combined AGI surpasses $25,900. These thresholds increase for those 65 and older due to additional exemptions. These plans are designed to encourage long-term savings by providing tax advantages. Contributions made to these plans are typically pre-tax, meaning they are deducted from the employee’s gross income before taxes are calculated. This reduces the taxable income for the year, potentially leading to lower tax liabilities. Additionally, the funds in these retirement accounts grow tax-deferred, meaning that taxes on investment gains are not paid until the money is withdrawn during retirement, ideally at a lower tax rate.
Illinois Tax Tables 2024 – Tax Rates and Thresholds in Illinois

The exemption for tax year 2024 is a maximum of $5,550 for married couples filing jointly ($2,775 for single filers). The Illinois Constitution currently requires income taxes to be imposed at a single, flat rate. A new bill filed in the Illinois General Assembly would allow for income to be taxed at varying rates, making how is sales tax calculated it easier for lawmakers to raise rates.

Illinois Tax Brackets for Tax Year 2023
These taxes comprise a combination of sales tax, excise taxes paid at the pump and wholesaler/retailer taxes. Income from Illinois sources if your adjusted gross income is higher than your Illinois exemption allowance. Katelyn has more than 6 years of experience working in tax and finance. She believes knowledge is the key to success and enjoys providing content that educates and informs. Residents of Illinois must pay sales tax on items that are tax-exempt in some other states. Localities can add as much as 4.75%, and the average combined rate is 8.890%, according to the Tax Foundation.
Illinois Income Taxes
- Additionally, contributions to Illinois’ 529 college savings plans, like Bright Start, are deductible, encouraging educational savings.
- When you retire, Illinois is one of the states that don’t tax retirement income.
- Likewise, you can take an additional dependent exemption for each qualifying dependent (like a child or family member), who you financially support.
- Additionally, Illinois is an extreme outlier in its decision to impose a temporary cap on the amount of net operating loss (NOL) carryforwards a business can claim in a given year.
- Interest on unpaid taxes accrues from the original due date, with a current rate of 3% per annum.
- We can also help you to determine whether the Illinois corporate tax rate is right for you.
Various deductions will be taken out before you see your final take-home pay. Let’s dive into these deductions and determine where your hard-earned money goes. If you have questions about the Illinois corporate tax rate or need additional help finding the right package, feel free to contact us. Even if you hold board meetings in Illinois, it will not trigger the requirement to pay the Illinois corporate tax rate as long as it is not the company’s office or founder’s residency. State Sen. Robert Martwick, D-Chicago, on Feb. 5 introduced a bill to eliminate Illinois’ flat tax and allow a graduated, or progressive, income tax structure.
So while making those contributions will decrease your take-home pay, stashing cash in one of these tax-advantaged accounts means the money will grow tax-free. In the case of the FSA and HSA, your money is illinois income tax rate there for you to spend on medical expenses. On the state level, you can claim allowances for Illinois state income taxes on Form IL-W-4. Your employer will withhold money from each of your paychecks to go toward your Illinois state income taxes.


The most commonly used business structure that is subject to corporate taxes is a C-Corporation. Illinois has a flat corporate income tax rate of 9.500% of gross income. Taxpayers needing more time to file can request an extension, but this does not extend the deadline for tax payments. Any balance owed must be paid by the original due date to avoid penalties and interest.
IL-1040-X Instructions: How to Amend Your Illinois Tax Return
If you determine that you will owe tax, we encourage you to use an electronic payment option to pay any tax you owe to avoid penalty and interest on tax not paid by the due date. You must complete Form IL-505-I, Automatic Extension Payment for Individuals, if you choose to pay by check or money order, and mail it with your extension payment. A reduced rate of 1 percent applies to qualifying food, drug and medical appliances. The Tax tables below include the tax rates, thresholds and allowances included in the Illinois Tax Calculator 2024. The general merchandise sales tax applies to almost all other products purchased for use in Illinois.
