When an individual receives a rebate, refund, or other return of money the individual
            has already paid, the money returned is not income.
         
         CAUTION: The key idea in applying this policy is a return of
               an individual's
               own money. Some “rebates” do not fit that category. For example, if a cooperative operating as a jointly-owned
            business pays a “rebate” as a return on
               a member's investment, this money is unearned income similar to a dividend. Developmental
            guidelines for interest and dividends are in SI 00830.500.