The household member, other than the immigrant(s) you are sponsoring, must complete and sign Form I-864A, Contract Between Sponsor and Household Member. 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.If you have a joint sponsor, they must also complete Form I864. You, the sponsor (petitioner), and the joint sponsor must complete Form I-864. See tips for completing Form I-864. The process of establishing someone as your financial sponsor begins with completing and filing the form i-864 after debit of support. A joint sponsor files a separate form I-864 Affidavit of Support, alongside the primary sponsor when the latter's finances are insufficient. In this video we're going to show you how to complete an i 864 and affidavit of support that is needed as part of the package for an adjustment of status. Any nondependent siblings, parents, or adult children who reside in the sponsor's household who are not dependents, if they complete a Form I-864A. You'll submit a copy of this Affidavit of Support form for each supporter and sponsor.