Unemployment insurance in Illinois works like this: if you lost your job through no fault of your own, the Illinois Department of Employment Security (IDES) pays you a weekly benefit — up to $628 in 2026, or more if you have dependents — for as long as 26 weeks while you look for new work. The program is funded by employer contributions, not payroll deductions from your paycheck. To collect, you file an initial claim, serve one unpaid waiting week, and then certify every two weeks that you’re still unemployed, able and available to work, and actively job searching.
Who Qualifies
Two things have to be true at once: you earned enough recent wages, and you lost your job for a reason IDES accepts.
The Wage Test
IDES looks at your “base period,” which is the first four of the last five completed calendar quarters before you file. You need at least $1,600 in total wages during that window, with at least $440 of it earned outside your single highest-paid quarter.1Illinois General Assembly. Unemployment Insurance Act The second threshold keeps a single short burst of work from qualifying someone on its own.
If you don’t clear the standard test, Illinois offers an alternative base period using the four most recently completed quarters, which can help workers whose earnings are concentrated in the most recent months.2Illinois Department of Employment Security. Unemployment Insurance Benefits Handbook
Why You Left the Job
A layoff for lack of work is the clean case. If you were fired for misconduct connected to your work, you’re disqualified until you find a new job and earn at least your weekly benefit amount in each of four separate calendar weeks.1Illinois General Assembly. Unemployment Insurance Act That’s a real re-employment hurdle, not a brief pause.
If you quit, the same disqualification applies unless the resignation was for “good cause attributable to the employing unit.”1Illinois General Assembly. Unemployment Insurance Act In practice that means something the employer did or failed to do forced you out: unsafe conditions, a drastic pay cut, harassment the employer refused to address. Personal reasons, however sympathetic, don’t meet the standard.
How Much You’ll Get Each Week
Your weekly benefit amount (WBA) is calculated from the two highest-paid quarters of your base period and capped at 47% of the statewide average weekly wage. For 2026 that sets the individual maximum at $628 per week.3Illinois Department of Employment Security. Weekly Benefit Amount Tables – CLI110L Most claimants come in below that ceiling — your actual number tracks your earnings history.
Dependents raise the maximum. With a non-working spouse the cap becomes $748 per week; with one or more dependent children it’s $859.3Illinois Department of Employment Security. Weekly Benefit Amount Tables – CLI110L The dependent allowance is added to the base WBA. IDES adjusts these figures each year.
How Long Payments Last
In 2026, eligible claimants can receive up to 26 weeks of benefits within a one-year benefit period, but total payments can’t exceed your base-period wages, whichever runs out first.4Illinois Department of Employment Security. Unemployment Insurance Information If you earned relatively little during the base period, your benefits may end before week 26.
Watch the calendar. For benefit years that begin on or after January 1, 2027, the maximum drops to 23 weeks.5Illinois General Assembly. Illinois Compiled Statutes 820 ILCS 405/403 If you file late in 2026 and your benefit year opens in early 2027, you’d be subject to the shorter duration. Filing promptly matters.
Your first week of eligibility is an unpaid “waiting week” required by law.2Illinois Department of Employment Security. Unemployment Insurance Benefits Handbook You still have to file and certify for it, but no payment comes.
Filing the Initial Claim
Have your paperwork ready before you start. IDES asks for your Social Security number and, for every employer you’ve worked for in the last 18 months, their name, mailing address, phone number, your employment dates, gross wages, and the reason you separated.6Illinois Department of Employment Security. Information Needed to File Online Your W-2s and final pay stubs are the most reliable sources for the corporate address and the wage totals.
Discrepancies between what you enter and what your employer reports are the single biggest cause of delays. When in doubt about dates, pull them from your offer letter or termination notice rather than guessing. Being off by even one pay period can send your claim into a manual review that adds weeks before your first payment.
Claims are filed online through the IDES website, available any day of the week except between 8 p.m. and 10 p.m. After you submit, IDES mails a UI Finding letter confirming whether you’re monetarily eligible, your weekly benefit amount, and your certification schedule.7Illinois Department of Employment Security. FAQs for Claimants You’ll also pick a payment method: a state debit card or direct deposit.
Certifying Every Two Weeks
Filing the initial claim gets you into the system. Staying paid means certifying every two weeks that you’re still unemployed, still able and available to work, and still looking for a job.7Illinois Department of Employment Security. FAQs for Claimants IDES assigns you a certification day (Monday, Tuesday, or Wednesday), and you can certify online between 3:00 a.m. and 7:30 p.m. or by phone at Tele-Serve, (312) 338-4337, during the same hours. Thursday and Friday are makeup days if you miss your assigned one.8Illinois Department of Employment Security. Certify for Benefits
Missing a certification window entirely is one of the fastest ways to lose benefits. IDES doesn’t send reminders, and if you slip past the makeup days you may have to reopen your claim, which creates a gap in payments.
The work search requirement is enforced. Keep a running log with the date, employer name, and method of contact for every application or inquiry. IDES can ask for proof, and your activity on IllinoisJobLink.com can serve as supporting evidence.7Illinois Department of Employment Security. FAQs for Claimants
Working Part-Time While Collecting
Part-time work doesn’t automatically end your claim. If your weekly earnings stay below 50% of your WBA, you receive your full benefit payment. Once earnings exceed that half-WBA threshold, IDES deducts only the amount above it.9Illinois Department of Employment Security. Partial Benefits (Working Part Time) The design rewards taking work rather than penalizing it.
You must report all earnings during your bi-weekly certification, even amounts that seem too small to matter. Unreported income is the most common trigger for an overpayment investigation.
Taxes on Your Benefits
Unemployment benefits are taxable at both the federal and Illinois level, and by default nothing is withheld. You can file IRS Form W-4V to have federal income tax withheld from each payment, or you can make quarterly estimated payments instead.10Internal Revenue Service. Unemployment Compensation
By January 31 of the following year IDES issues Form 1099-G showing the total benefits paid, which you’ll need for both returns.11Illinois Department of Employment Security. 1099-G Tax Form A full 26 weeks at $628 with no withholding is over $16,000 of taxable income and no taxes taken out. Plan for it.
If Your Claim Is Denied
A denial doesn’t have to be final. You have 30 days from the mailing date on your denial notice to submit a Request for Reconsideration, by letter or on the official form.12Illinois Department of Employment Security. Appeals Miss that deadline and you waive the appeal.
If reconsideration is denied, your case moves to a telephone hearing before an Administrative Law Judge (called a Referee), where both you and the employer can testify. Send any documents you want considered to the Referee before the hearing. In misconduct and voluntary-quit cases the employer carries the burden of proof, so come with your own records: emails, written policies, performance reviews, anything that supports your account. Further appeals go to the Board of Review and then to Circuit Court, each with its own filing deadline.12Illinois Department of Employment Security. Appeals
If You Were Overpaid
If IDES later determines you received benefits you weren’t entitled to — from your own error, an employer’s revised report, or a reversed appeal — you have to repay. IDES can recover the money by offsetting future benefits or through other collection methods.13Illinois Department of Employment Security. Overpayments Waivers are available in limited hardship situations. Overpayments tied to fraud carry additional penalties and can disqualify you from future benefits, so report earnings and job changes accurately during every certification, even when you’re unsure whether something counts.