A family loan agreement is made between a borrower and lender that are related by blood or marriage. It is set up to be a simple agreement between the parties that outlines the money borrowed and the repayment terms. Generally speaking, interest is not commonly charged between family members. If it is, the lender cannot charge more than the Usury Rate allowed in the state where the parties reside.
A loan agreement is a written agreement between a lender that lends money to a borrower in exchange for repayment plus interest. The borrower will be required to pay back the loan in accordance with a payment schedule unless a balloon payment is required.