Child Support Forms ; 4-3a. Petition (Commissioner).5 For the tax year, have you paid an amount in child support equal to or more than the amount due for every order requiring you to make child support payments? Child support cases are usually started in Family Court in the county where the child lives. There is no filing fee in Family Court. Note: This form also applies to some tax benefits, including the child tax credit, additional child tax credit, and credit for other dependents. Step 1: Fill out these forms. The IWO is the OMBapproved form (PDF) used for income withholding in tribal, intrastate, and interstate cases as well as all child support orders. D Child custody and visitation shall be ordered as set forth in the proposed Judgment (Uniform Parentage) (form FL-250). 4. The seizure process for stimulus checks for child support arrears is like that for seizure of your tax return.