Can my paychecks be garnished 30% for backing into a car?
Depending upon the laws of your state, yes your wages can be garnished for a debt you have incurred.  The person attempting to collect the debt would have to first obtain a judgment in a court before your wages could be garnished.  The amount that can be garnished from your payroll is dependent upon your wages and other deductions you may have from your payroll.  The short answer is, if you are found to be liable to someone for a debt, they can garnish your wages as a method of seeking payment for that debt.