Form I-864, the Affidavit of Support, requires the sponsor to show income at 125% of the current federal poverty guideline. Active members of the U.S. military only have to show income at 100% of the federal poverty guideline. The income required is based on your household size or the number of persons who are dependent on you. To see the current federal poverty guidelines please visit the U.S. Department of Health and Human Services website.