SBA Lenders may use this form. Fill out all applicable spaces in the information grid at the top of the front page of the Guarantee.This Secondary Participation Guaranty Agreement is a contract that details the terms and conditions of the sale of the guaranteed portion of an SBA loan. This application (SBA Form 5), completed and signed. When applying for an SBA 7(a) loan, you must complete SBA Form 1919. Please answer all questions as completely as possible. Each manager, guarantor and owner is required to fill out this form. Existing borrowers can create an account in the MySBA Loan Portal (lending. SBA 7(a) Loan Guaranty Fee Calculator. Related programs: 7(a).