IRS Notice 2014-54, issued September 18, 2014, provides that all disbursements from a retirement plan scheduled to be made at the same time are treated as a single distribution even if they are sent to multiple destinations.
As a result of this notice, taxpayers with pretax and after-tax amounts in their plan, for example, can transfer through direct rollovers the pretax portion of the distribution (including earnings on after-tax amounts) to a traditional IRA and the after-tax portion of the distribution to a Roth IRA. (Previous interpretations allowed accomplishing this result through 60-day rollovers but not direct rollovers.) The guidance provided in Notice 2014-54 applies only to distributions from qualified plans described in section 401(a) of the Code (such as profit-sharing and 401(k) plans), section 403(b) plans and section 457(b) governmental plans. The guidance in Notice 2014-54 is generally effective January 1, 2015; however, transitional rules included in the guidance permit taxpayers to utilize the new rules provided in the guidance prior to the effective date.
The guidance in Notice 2014-54 does not apply to distributions from IRAs.
Learn more here on the IRS website.