The median household income in Illinois is $72,200. Saving 15% of that comes to $903 per month. Over 5 years in a high-yield savings account at 4.75%, that grows to $60,986, including interest.
A fully-funded 6-month emergency fund in Illinois requires $36,100 based on median income. At a 15% savings rate, that target takes 38 months to reach. This is the single most important financial buffer you can build.
If a home purchase is your goal, a 20% down payment on the Illinois median home of $265,000 requires $53,000. At 15% savings rate, that takes 53 months.
Illinois has a state income tax of 4.95% flat. Your actual take-home monthly is lower than the gross figures above. Adjust your savings contribution to your net income for more accurate timelines.