The Internal Revenue Service (IRS) recently issued two significant notices for employers that sponsor defined benefit pension plans, particularly those considering lump-sum windows as a “de-risking” option for their plans. In Notice 2015-49, the IRS notified plan sponsors that they are no longer permitted to offer retirees in pay status the option to take a lump-sum payment in lieu of ongoing annuity payments. Plan sponsors may, however, continue to offer a lump-sum payment option to deferred vested participants not in pay status. In Notice 2015-53, the IRS released updated mortality tables for 2016 and delayed the issuance of new regulations, which could incorporate new mortality assumptions recommended by the Society of Actuaries that many believe would increase pension funding liabilities and minimum lump-sum payments.