Register with Minnesota Child Support Online and create your User ID to get a temporary password. More information about Minnesota's laws for employers and child support are in the Employer's Guide to Minnesota Child Support Laws DHS-3177 (PDF).Most child support forms are available in several languages. Find the form you want and choose the language you need. Us Click on Employers and then sign in under Registered Employers and enter your User ID and password. The IWO is the OMBapproved form (PDF) used for income withholding in tribal, intrastate, and interstate cases as well as all child support orders. Information a party includes in the Financial Affidavit will provide the court with information needed to calculate child support. Child Support payments can be mailed directly to the Minnesota Child Support Payment Center, P.O. Box 64326, Saint Paul, MN 55164-0326. Instructs employers and federal agencies on how to process income withholding orders including examples of calculations. Apply for services in the county where you live or which issued a court order for child support.