A sponsored immigrant household member only needs to submit an INS Form I-864A, Affidavit of Support Contract between Sponsor and Household Member, if his or her income will be used to support his or her accompanying spouse and/or children. If there are no accompanying family members, the sponsored immigrant does not complete the I-864A. The sponsored immigrant does not need to complete an I-864A for his or her assets to be included on the Affidavit of Support.
The legal definition of a tax return includes the tax return as well as all supporting supplements, schedules, attachments, or lists which were filed with the return. Sponsors are required to submit all of these materials as they were submitted to IRS for themselves and any other persons whose income is used to qualify.