This is the only relevant item I could find in the Gray Book, and I have not checked to see if there is other (later) official guidance. Gray Book 2004-42
Treas. Reg. §1.401(a)(9)-2, A-2(a) provides that except in the case of a 5%-owner, the “required beginning date” is April 1 of the calendar year following the later of the calendar year in which the employee attains age 70-1/2 or the calendar year in which the employee retires from employment with the employer maintaining the plan.
If December 31, 2003 is the employee’s last day at work, and the last day for which he is paid or entitled to payment of wages, is that the date of “retirement”. Or is January 1, 2004, the first day he is not employed, the retirement date? When is the employee’s required beginning date?
RESPONSE
“Retirement” is the last day worked, not the definition of retirement date in the plan. What date is an employee’s last day worked is a facts and circumstances determination. The facts and circumstances are based on the employer’s practice concerning the last day an individual is considered an employee. The above Response is a summary, prepared by representatives of the Program Committee, of the oral responses to the question posed to certain staff members of the Treasury and IRS, which represent only personal views of the individuals who provided them. Accordingly, the Response does not necessarily represent the positions of the Treasury or the IRS and cannot be relied upon by any taxpayer for any purpose.
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