I Inherited a 401(k) From My Late Wife. When Am I Required to Take RMDs?


Financial advisor and columnist Matt Becker
Financial advisor and columnist Matt Becker

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I am 74 years old (I was born Feb 2, 1948). My wife and I both worked for Aetna, but have retired and have 401(k)s from work that are with Vanguard. I received her 401(k) as a spousal inheritance and maintain it in a separate account. I plan to take RMDs on her account but I’m not sure if I have the option to take the RMDs based upon her age or my age. She had not begun taking RMDs on her account because she was not 72. Can you confirm which age (hers or mine) I should use for the first RMD withdrawal, and by what date does that RMD need to be taken? I believe there is a provision in the law that indicates that with spousal inheritance you don’t have to begin taking RMDs from an inherited account for a year after the year of death.

– Gary

The date and amount of that first required minimum distribution (RMD) depend on what you decide to do with the inherited 401(k). The answer will vary based on whether you roll the funds into your own 401(k) or IRA; transfer the account to an inherited IRA and take RMDs from it; transfer the money into an inherited IRA and follow what’s called the 10-year rule; or do a Roth conversion. Here’s a closer look at those options and what they mean for RMDs. (And if you need more help planning for RMDs or taxes in retirement, speak with a financial advisor.)

As a surviving spouse, you have the option of rolling the inherited 401(k) into your own 401(k) or IRA. You could roll it into an existing account open open a new IRA to receive the rollover.

If you go this route, the money will be treated as yours and become subject to the same RMD requirements as if you had held it in your account all along. Since you are 74 and no longer working, you would need to take an RMD by Dec. 31 and the amount would be calculated using your age and the Uniform Lifetime Table. (But if you need more help calculating your RMDs, consider matching with a financial advisor.)

Transferring money to an inherited IRA is one way to manage an inherited 401(k).
Transferring money to an inherited IRA is one way to manage an inherited 401(k).

Instead of rolling it into your own IRA, you could instead transfer it into an inherited IRA. This has the benefit of allowing you to delay RMDs until the later of two deadlines:

In your case, it sounds like this would allow you to wait a couple of years before taking RMDs. As long as you take your first RMD by Dec. 31 of the year your wife would have turned 73, you should avoid penalties.


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