But if you don't support it, are you liable for collecting more tax than required? How do you "not support" it? Just reject purchases from people in TN during the holiday?
UPDATE: Out of curiosity I looked it up. And it looks like sales tax holidays depend as usual on the state. The MO back to school one is optional if less than 2% of merchandise is affected. But the TN one doesn't look optional.
No.
Collection of taxes is done to enforce law, unless the state is compelling people with something else?
To _comply with_ law.