The Discount Rate is calculated as 100% minus the percent discount the SAFE investors are entitled to. For example, if SAFE investors are entitled to a discount of 20% (they can buy Standard Preferred Stock 20% cheaper than subsequent investors), the Discount Rate is 80% = 100% - 20%.
A shared equity mortgage is an arrangement under which a mortgage lender and a borrower share ownership of a property. Shared equity mortgages can also occur when there are multiple buyers of a single property. The borrower must occupy the property.