Rhode Island Child Support Case Registration and Payment Form (CSS-1) is a form used by Rhode Island families to register and make payments for child support cases. It is used by the Department of Human Services (DHS) to record information about the family, the child support case, and payments made. The form is made up of two parts: the Registration Form and the Payment Form. The Registration Form is completed by the custodial parent and includes information about the family, the child support case, and the court order. It is used by DHS to create a case and assign a child support case number. The Payment Form is used to make payments for the child support case. It includes information such as the total payment amount, the payment method, and the court order number. It is used to record payments that have been made and ensure they are applied to the correct case. The Rhode Island Child Support Case Registration and Payment Form (CSS-1) is used by both custodial and non-custodial parents to make payments and manage their child support cases.