Those with a sweet tooth might decide to be a little more selective when it comes to buying sugary treats in Illinois, where certain types of candy can incur a 6.25% sales tax.
It all comes down to flour. Candy bars made with flour, such as KitKats, are considered a grocery item in Illinois, and subject to only 1% sales tax.
Those that don't include flour in their ingredients, however, such as classic M&Ms, are regarded as candy rather than food, and so are taxed at the higher rate.