Affidavit of Support Format​​ An Affidavit of Support should include: The affiant's full name, address, birthdate, and place. Understand the Affidavit of Support sample with this comprehensive guide and sample.Next, provide the student's name and the program they are enrolled in. This is a sample letter for F-1 and J-1 supporters, showing that they are providing monetary support to students. Formatting an Affidavit ; Step 1: Decide what the title of your affidavit will be.