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. Form I-864 is required for most family-based immigrants and some employment-based immigrants to show that they have adequate means of financial support.The Affidavit of Support is a form that establishes a sponsor's ability and willingness to financially support an immigrant in the United States. If you are applying for a family preference visa, you will need to file Form I-130, Petition for Alien Relative, and Form I-864, Affidavit of Support. A: The Affidavit of Support is a legal document in which a sponsoring family member commits to financially supporting the immigrant relative. Below is a list of forms that you may download for free from our website. What do I need to complete and submit forms online? Some sponsors temporarily reside abroad and intend to move to the US once a family member's immigrant visa is issued. Call for a new form. If you are intending for this to be a Home-Based business, you will need to submit a Home Occupation Affidavit with your application.