A qualifying longevity annuity contract (QLAC) is technically a deferred income annuity purchased by a tax-free transfer of a portion of your tax-qualified accounts, generally made after age 55. That transfer, in addition to adding a QLAC to your plan, reduces your account to determine taxable required minimum distributions (RMDs).

So, if you used 25% of a $400,000 qualified account, your $100,000 purchase of a QLAC would reduce your RMDs by 25%. And the income from a QLAC could be deferred until as late as age 85.