Hich of the following are characteristics of a perpetuity? Check all that apply. A perpetuity is a series of regularly timed, equal cash flows that is assumed to continue indefinitely into the future. The principal amount of a perpetuity is repaid as a lump-sum amount. A perpetuity continues for a fixed time period. The present value of a perpetuity is calculated by dividing the amount of the payment by the investor’s opportunity interest rate.