The State Spotlight Series
Illinois state sales tax rate is 6.25%. However, always remember that is the state rate. It does not include any local jurisdictions and can be as high as 11% in some places in Illinois.
Illinois does make it a bit easier with the rate look up tool you can find directly on their website.
Illinois State Sales Tax Due Dates
The 20th of the every month is when the taxes are due for Illinois for monthly remittance. When you apply for a tax ID number in IL, they notify you about your frequency of filing requirements. Also, as you begin selling in the state, they’ll also notify you depending on your average sales if your filing requirements change.