of the individual's disposable earnings for that week.
In the case of earnings for a pay period other than a week, the earnings shall be computed upon a multiple of the federal minimum hourly wage equivalent to thirty (30) times the federal minimum hourly wage as prescribed in this section.
except that, with respect to the disposable earnings of any individual for any workweek, the fifty percent (50%) specified in subdivision (a) shall be deemed to be fifty-five percent (55%) and the sixty percent (60%) specified in subdivision (b) shall be deemed to be sixty-five percent (65%), if and to the extent that such earnings are subject to garnishment or support withholding to enforce a support order with respect to a period which is prior to the twelve (12) week period which ends with the beginning of such workweek.
The deductions made under this subsection for a collection fee do not increase the amount of the judgment debt for which the fee is collected for the purpose of calculating or collecting judgment interest. This fee may be collected by an employer only once for each garnishment order or series of orders arising out of the same judgment debt. The employer may collect the entire fee from one (1) or more of the initial deductions from the employee's disposable earnings. Alternatively, the employer may collect the fee ratably over the number of pay periods during which deductions from the employee's disposable earnings are required.
IC 24-4.5-5-105