Here’s something most people don’t find out until it’s too late: inheriting a 401(k) isn’t like inheriting a car or a piece of furniture. You don’t just get to keep it and use it however you want. There are rules. And if you’re not the person’s spouse, those rules are pretty strict.
If the account owner died after January 1, 2020, most non-spouse beneficiaries have to completely empty the account within 10 years of the account holder’s death. That means a grandparent, parent, sibling, friend — basically anyone who isn’t your husband or wife — leaves you their 401(k), and a countdown begins immediately.
There are some exceptions to that 10-year rule worth knowing about. The IRS recognizes a category called “eligible designated beneficiaries” — which includes people who are disabled, chronically ill, or less than 10 years younger than the person who died. Minor children of the original account owner are also in this category (until they reach the age of majority). If you fall into one of these groups, different rules may apply to you, and you should talk to a tax professional right away to understand your options.
For everyone else, here’s the part that catches people off guard: every dollar you pull out gets taxed as regular income. A 401(k) is funded with pre-tax money, meaning taxes were never paid on it while the original owner was alive. When you inherit it and withdraw it, the IRS treats it like a paycheck. You owe income tax on all of it.
Spouses get treated differently. They have more flexibility — more options for what they can do with the inherited account. Non-spouses don’t get those same breaks.
You also can’t just roll the inherited money into your own existing retirement account to avoid the taxes or stretch the timeline. That option isn’t available to non-spouse beneficiaries.
One thing worth knowing: some plans may allow non-spouse beneficiaries to leave the balance in the plan and take required minimum distributions rather than pulling everything at once — but this varies by the specific plan, and the rules around it have been shifting because of recent legislation. Don’t assume your plan offers this without checking.
You do have some control over *when* within that 10-year window you take the money. If you pull it all out in one year, that’s a huge chunk of taxable income hitting at once, which could push you into a higher tax bracket. Spreading withdrawals across several years might lower your tax hit overall. That’s something worth thinking through carefully.
The IRS also confirms that beneficiaries generally have the option of taking a lump-sum distribution of an inherited account at any time — so you’re not forced to wait, but you’re also not forced to rush it all out in year one.
Bottom line: if you think you might inherit someone’s 401(k) someday — or if it’s already happened — don’t sit on this. The rules are real, the clock is real, and the taxes are real.