Cash flow notes are legally-binding contracts which document the promise of the borrower to repay the lender. Currently, there are more than sixty types of cash flow notes. Some of the more common types include real estate, structured settlements, and business notes. Real estate cash flow notes are secured by real property such as a commercial building, residential house, mobile home, automobile, boat, or airplane. When real property is used to secure real estate notes, a mortgage or trust deed is added. Structured settlements are financial instruments used to compensate individuals who have been injured due to the negligence of an individual or organization. This type of cash flow note is secured using annuity payments typically paid to the recipient over an extended period of time. Business cash flow notes are secured by assets owned by the business. There are different types of business cash flow notes including: seller carry back notes, purchase order funding, and factoring.