Indiana Arbitrage Calculation Worksheet 51799/CSS 0008[fillable] is a worksheet used to calculate the amount of arbitrage owed in a child support case. It is a form issued by the Indiana Department of Child Services. The worksheet can be filled out electronically using Adobe Acrobat Reader. The worksheet consists of two parts: the Arbitrage Calculation Summary and the Arbitrage Calculation Worksheet. The Arbitrage Calculation Summary is used to calculate the total amount of arbitrage owed by the obliged. It includes fields for entering the amount of current support, the amount of prior unpaid support, and the amount of interest owed. The Arbitrage Calculation Worksheet is used to calculate the amount of arbitrage due for each month. It includes fields for entering the amount of current support, unpaid support, and interest owed for each month, as well as the total amount due for each month. There are two types of Indiana Arbitrage Calculation Worksheet 51799/CSS 0008[fillable]: one for paternity cases and one for divorce cases.