Use this form to show they have adequate means of financial support and are not likely to rely on the US government for financial support. In today's video we're going to fill out form i-864 the affidavit of support form together.It is one of the most confusing forms. Enter anticipated income, not what the sponsor paid in taxes last year. In this guide, we will explain who needs to complete Form I864, when to file it, and how to fill out Form I864 stepbystep. Child Support Forms ; 4-9a. General Information and Instructions about Ending Your Marriage. If you believe it is an emergency application, you must also file an affidavit of emergency. Find a Courthouse Facilitator for help completing family law or guardianship forms in some counties. Commercial Accounts must call first to see if the commercial entity is able to send in a check for fees of paper documents.