The rules are designed to enable participants to receive a portion of the plan benefit as a stream of monthly payments while taking the remainder in a single, lump-sum cash payment. The regulations encourage these split options by changing the minimum present value requirements for defined benefit plan distributions to permit plans to simplify the treatment of certain optional forms of benefits that are paid partly in the form of an annuity and partly in a more accelerated form. Defined benefit plans are allowed to apply actuarial assumptions on interest rates and mortality benefits only to the portion of the distribution being paid as a lump sum. The partial annuity portion of the benefit is determined using the plan’s regular conversion factors.