How to figure out what percentages to use for sales tax in Illinois and cook county.

The combined sales tax rate for Cook County is 10.25%. This includes the Illinois state rate of 6.25%, the Chicago rate of 1.25%, the Cook County rate of 1.75%, and the RTA rate of 1%.

I live in Hoffman Estates, would the rate be slightly different?

According to the village’s Sales Tax Rates website, it’s 10.0% for general merchandise but varies for food and vehicles.

I know when I buy merchandise it is always 10% so I will go with 10%. Turbotax says that their isn't any tax except for state taxes which is 6.25%, I only wish. I'll use 10%. Thanks for your help.