First, you need to be sure your state return was successfully filed. If you efiled, be sure your efiled state return was accepted for processing by the state. If you used Online TurboTax, you can check by looking at the Tax Home in your Online account. Does it show the state return was accepted, rejected, printed, started, ready to mail, or something else?
Or did you choose to file by mail instead? TurboTax does not mail it for you. If you chose that method, you have to print, sign, date, and mail it.
The FAQ below tells how to check on an Illinois state refund. Some state revenue department websites have a FAQ section or info on their refund lookup page that tells about how long it takes in that particular state.
FAQ: How do I track my Illinois state refund?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-refund/track-illinois-tax-refund/L0Y...
After checking all of the above, if your processing is taking longer than the usual time frame for your state, you can phone your state department of revenue's customer service to see if they can tell you the reason for the delay.
FAQ: How do I contact my state department of revenue?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/state-taxes/contact-state-department-rev...
