When an account is sent to "collections" , that generally means a civil proceeding.
However, floating a check when you know you don't have the money in the bank is a crime - in Wisconsin a bad check for $100 is a Class A Misdemeanor punishable by up to 9 months in jail and penalties of up to $10,000. If this is your first offense, you would likely not receive any jail time and face a much lower penalty.
You should pay the amount owed plus any "bounced check" fee.
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