Agreement between the Borrower and the Administration dated the same date as this Agreement. (as it may be amended, the "Loan Agreement"). 3.A guarantor agreement is an agreement of a third party to provide assurance of payment in the event the party involved in the transaction defaults. A contract consists of a legally binding agreement or promise between parties. One guarantor owns a 60 per- cent interest in the borrower, one owns 30 percent and one owns 10 percent. Edit, sign, and share Guaranty Attachment to Lease for Guarantor or Cosigner - Maryland online. This is a Legally Binding Contract; If Not Understood, Seek Competent Legal Advice.