Summary: Lenders must use this form to participate in the SBA Community Advantage loan program. SBA form; 750CA Addendum.This Agreement supplements the Loan Guarantee Agreement, SBA Form 750, and, if applicable, SBA Form 750B (for shortterm loans), between Lender and SBA. The guarantee is contingent upon Lender: 1. Lenders must use this form to participate in the SBA Community Advantage loan program. About this document and download. All participating Lenders must have a signed SBA Form 750, SBA Form 3506 or SBA Form 3507 (depending on type of Lender). The Borrower may submit and the SBA may, in its sole discretion, accept documents after 2 months of the date of this Loan Authorization and Agreement. Lender must report periodically on the status of all SBA-guaranteed loans in its portfolio, in accordance with Loan Program Requirements. Lender's failure to.