What does rolling over a 401(k) actually do with the money?

By Kaz · Published 28 September 2026 · How this site checks figures

Summary

A rollover takes money paid out of a workplace plan such as a 401(k) and puts it into another workplace plan or an IRA, so it stays retirement money instead of becoming spending money. Pretax money moved into a pretax account like a traditional IRA is not taxed on the way; the IRS says the transaction isn't taxable "unless the rollover is to a Roth IRA or a designated Roth account from another type of plan." Whether anything is withheld depends on whether the plan pays the receiving account or pays you.

Two routes, two sets of rules

	Direct rollover	Paid to you, then redeposited
Who the plan pays	The receiving plan or IRA, sometimes by a check made out to the new account	You
Tax withheld	None	20% of the taxable amount, even if you plan to roll it over
Deadline	None to track	60 days from the date you receive it
Counts toward the one-rollover-per-12-months IRA limit	No	No, for plan-to-IRA rollovers

Withholding is what makes the second route expensive. In the IRS's example, a 42-year-old receives a $10,000 distribution with $2,000 withheld. If she redeposits only the $8,000 she received, the $2,000 she did not redeposit is taxable income, and because she is under 59½ it is also subject to the 10% additional tax on early distributions. To roll over the full $10,000 she has to find the $2,000 from other savings within the 60 days. The arithmetic for any amount, and what happens if the window closes, is laid out on the page about the 60-day rule and 20% withholding.

Payments that can't be rolled over

The IRS names nine kinds of plan payments that are not eligible. The ones a person leaving a job is most likely to meet are required minimum distributions, hardship distributions, loans treated as distributions, and payments that are part of a series of substantially equal payments. The other five are refunds of excess contributions, withdrawals that opt out of an automatic contribution arrangement, distributions used for accident, health, or life insurance, dividends on employer securities, and S corporation allocations treated as deemed distributions. Anything else is an "eligible rollover distribution" and can be rolled over in whole or in part.

What the money leaves behind

The money moves to the new account, but features that belong to the plan stay behind. The clearest case is a loan. A 401(k) may lend to participants, but an IRA cannot, and the IRS warns that an IRA owner who borrows from the account loses IRA status and has the whole value included in income.

If a loan is still outstanding when you leave, the plan can require full repayment and treat whatever you can't repay as a distribution. You can still avoid the immediate tax by rolling over that amount by the due date, including extensions, of your tax return for that year. The guide to a 401(k) loan when you leave follows the loan case through to the tax-return deadline.

Sources

Written by Kaz, an independent publisher.
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