Illinois state tax refunds typically arrive within 30 days of the Illinois Department of Revenue receiving your return, though some take longer depending on how you file and whether your return needs review.
The timeline depends on three things: how you file, whether the department flags your return for verification, and which payment method you choose. Paper returns take longer than e-filed returns. Direct deposit is faster than a check in the mail. If the department needs to verify information on your return — which happens randomly and also when certain red flags appear — you can add two to four weeks to the timeline.
The Illinois Department of Revenue publishes a Where's My Refund tool on its website where you can check the status of your specific return using your Social Security number and the amount of your refund. This tool updates every few days and will tell you whether your return is still being processed, has been approved, or has been sent out for payment.
Key Takeaways
- E-filed returns with direct deposit typically arrive within 21 days; paper returns take 30 to 60 days or longer.
- The Illinois Department of Revenue's Where's My Refund tool shows your return status and expected payment date.
- Returns flagged for verification add two to four weeks to processing time, and the department will contact you by mail if this happens.
- If your refund does not arrive within the stated timeframe, contact the department by phone or through its website to investigate.
Timeline by filing method
E-filed returns move through the system faster than paper returns. If you e-file and request direct deposit, the Illinois Department of Revenue typically processes your return and sends payment within 21 days. This is the fastest route. If you e-file but request a check instead, add five to seven business days for the check to arrive in the mail after the department approves your return, bringing the total to around 26 to 28 days.
Paper returns take longer because the department has to scan and enter the information manually. A paper return typically takes 30 to 60 days to process, depending on how busy the department is and whether the return requires verification. During tax season (January through May), paper returns often sit in a queue for several weeks before processing begins. If you mailed your return in April, expect to wait closer to 60 days. If you mailed it in June or later, processing may be faster because the initial rush has passed.
The Illinois Department of Revenue does not accept returns through the mail after a certain point in the year for that tax year, so check the department's website for the current deadline if you are considering filing by paper.
What happens if your return is flagged for verification
The Illinois Department of Revenue randomly selects returns for verification, and also flags returns that contain certain patterns — such as unusually large deductions, claims for credits that do not match your income, or missing information. When this happens, the department mails you a letter asking for documentation. You have 30 days to respond.
If your return is flagged, add two to four weeks to your timeline. The department will not process your refund until it receives your response and reviews it. If you respond quickly and the documentation is clear, the department may approve your return within a week or two of receiving your response. If the documentation is incomplete or raises more questions, the review can take longer.
You will receive a letter in the mail if your return is selected for verification. Do not ignore it. Respond with the documents the letter asks for, and keep a copy for your records. If you do not respond within 30 days, the department may deny your refund claim.
Tracking your refund status
The Illinois Department of Revenue's Where's My Refund tool is the most reliable way to check on your return. Go to the department's website, select "Where's My Refund," and enter your Social Security number and the amount of your refund. The tool will show you one of several statuses: your return is being processed, your return has been approved and a refund has been issued, or your return requires additional information.
The tool updates every few days, so check it once a week rather than daily. If the tool says your return has been issued, it will also tell you the expected delivery date. For direct deposit, this is usually within five to seven business days. For a check, allow an additional five to seven business days for mail delivery.
If the tool shows that your return requires additional information, you will also receive a letter from the department. Follow the instructions in the letter and respond within the deadline given.
What to do if your refund is late
If your refund does not arrive by the date shown in the Where's My Refund tool, or if more than 21 days have passed since you e-filed and you have not seen a status update, contact the Illinois Department of Revenue. You can call the department's individual income tax line at 217-782-3336 (Monday through Friday, 8 a.m. to 5 p.m. Central Time) or submit a question through the department's website.
When you call, have your Social Security number, the tax year, and the amount of your refund ready. The department can tell you whether your return is still in the queue, has been approved, or has been sent out for payment. If it has been sent out, the department can tell you the expected delivery date and may be able to investigate if the payment has been lost in the mail.
If a check has been lost or not received within 10 business days of the date shown in the Where's My Refund tool, the department can issue a replacement check or, in some cases, process a direct deposit instead. This usually takes another two to three weeks.
Direct deposit versus check delivery
| Payment Method | Processing Time | Delivery Time | Total Time |
|---|---|---|---|
| Direct deposit (e-filed return) | 14 to 21 days | 5 to 7 business days | 21 days average |
| Check (e-filed return) | 14 to 21 days | 5 to 7 business days | 26 to 28 days average |
| Check (paper return) | 30 to 60 days | 5 to 7 business days | 35 to 67 days average |
Direct deposit is the fastest option. The money goes directly into your bank account, and there is no risk of a check being lost in the mail. If you are filing electronically, choose direct deposit when prompted. You will need your bank account number and routing number.
Check delivery is slower because the department has to print the check, mail it, and then you have to deposit it. A check typically takes five to seven business days to arrive after the department approves your return. If the check is lost or delayed in the mail, getting a replacement adds another two to three weeks.
Frequently Asked Questions
Can I speed up my Illinois tax refund?
E-filing with direct deposit is the fastest method available. If you have already filed by paper or requested a check, there is no way to speed up processing once the department has received your return. The only exception is if your return is flagged for verification — responding quickly with complete documentation can help the department process your refund faster.
What if I filed my return but the Where's My Refund tool does not show it?
E-filed returns usually appear in the tool within 24 to 48 hours. Paper returns can take one to two weeks to appear because the department has to scan them first. If your return does not appear after two weeks, contact the department to confirm it was received.
Do I need to do anything if my return is approved?
No. Once your return is approved, the department automatically sends your refund by the method you chose (direct deposit or check). You do not need to take any action. The Where's My Refund tool will show you the expected delivery date.
What happens if I owe Illinois taxes instead of getting a refund?
If you owe taxes, the department will send you a bill by mail. You can pay online through the department's website, by phone, or by mail. If you cannot pay the full amount, the department offers payment plans.
Can I get my refund as a debit card instead of direct deposit or check?
Illinois does not currently offer a refund debit card option. Your choices are direct deposit to a bank account or a check mailed to your address.