A 401(k) rollover moves your retirement savings from a former employer's plan into an account you control. It is one of the most common financial moves Americans make, and one of the easiest to get wrong.
If you changed jobs, were laid off, or retired in the past year, you almost certainly have an old 401(k) sitting with a former employer. You can usually leave it there. But millions of savers move that balance into an Individual Retirement Account (IRA) instead — for lower fees, a far wider menu of investments, and the simplicity of keeping retirement money in one place rather than scattered across old employers.
The catch is the paperwork. Done one way, a rollover is a tax-free, invisible transfer. Done the other way, it triggers a 20% withholding hit and, if you miss a deadline, a tax bill plus a 10% penalty. This guide walks through the process the way the IRS lays it out — step by step, in plain English.
Direct rollover vs. 60-day rollover: the choice that decides everything
Before any forms are signed, understand the single most important distinction in this process. There are two ways to move the money, and only one of them is safe by default.
A direct rollover — also called a trustee-to-trustee transfer — sends the money straight from your old 401(k) to your new IRA. You never touch it. The check, if there is one, is made payable to your new account, not to you. As the IRS states, "no taxes will be withheld from your transfer amount." [1] This is the method you want.
A 60-day rollover happens when the plan pays the distribution directly to you, and you then have 60 days to deposit it into an IRA yourself. This is where savers get hurt. The IRS rule is blunt: a retirement plan distribution paid to you is subject to mandatory withholding of 20%, even if you intend to roll it over later.
Why that matters: say your 401(k) holds $10,000 and you take it as a check. The plan withholds $2,000 and sends you $8,000. To complete a full tax-free rollover, you must still deposit the entire $10,000 into your IRA within 60 days — which means finding that missing $2,000 from your own pocket. If you roll over only the $8,000 you actually received, the IRS treats the $2,000 as a taxable distribution, and if you are under age 59½, you also owe a 10% early-withdrawal penalty on it. Miss the 60-day window entirely and the whole balance becomes taxable income for the year.
The lesson is simple: always ask for a direct rollover. There is almost never a good reason to have the check sent to you.
Step 1: Decide between a traditional IRA and a Roth IRA
A standard 401(k) holds pre-tax money. The clean, tax-free destination for it is a traditional IRA, which also holds pre-tax money — the rollover changes nothing about your tax situation, and you keep deferring tax until you withdraw in retirement.
You can instead roll a pre-tax 401(k) into a [Roth IRA->https://en.money.it/Roth-IRA-2026-new-contribution-limits-income-caps-and-what-s-different-this], but that is a Roth conversion, and it is a taxable event. The full amount you convert is added to your income for the year and taxed at your ordinary rate. For a large balance, that can push part of your income into a higher slice of the [2026 federal tax brackets->https://en.money.it/Federal-Tax-Brackets-2026-How-Much-You-ll-Owe-at-Every-Income-Level], so a conversion is best run past a tax professional first. If your old account was already a Roth 401(k), though, rolling it into a Roth IRA is tax-free and usually the obvious choice.
One reassurance: a rollover is not a contribution. It does not count against the annual IRA contribution limit, so moving a six-figure 401(k) into an IRA in a single year is perfectly allowed.
Step 2: Open the receiving IRA first
You cannot roll money into an account that does not exist yet. Open your IRA at a brokerage before you contact your old plan. Most major providers let you do this online in about 15 minutes; you will need your Social Security number, a government ID, and basic employment information.
Once the account is open, write down the two things your old plan administrator will ask for: the name of the receiving institution and your new IRA account number. Having them ready makes the next step much faster.
This is also the moment to be clear on [how a 401(k) actually works->https://en.money.it/How-a-401-k-Works-in-2026-Contribution-Limits-Match-and-the-Roth-Option] compared with an IRA. The biggest practical difference is choice: a 401(k) typically offers a curated list of a dozen or so funds, while an IRA opens the door to nearly every stock, bond, ETF, and mutual fund on the market — often at a lower cost.
Step 3: Request the direct rollover from your old plan
Contact your former employer's plan administrator — the financial company that runs the 401(k), not the employer's HR department, although HR can point you there. Tell them clearly: you want a direct rollover to an IRA.
They will ask how you want the check handled. The best option, where available, is an electronic transfer straight to your IRA provider. If the plan only issues paper checks, insist the check be made payable to your new institution "for the benefit of" you — for example, "[Brokerage] FBO [Your Name]." A check written that way cannot be cashed by anyone but the receiving account, which keeps the transfer tax-free and free of withholding.
By law, if your distribution is $200 or more, the plan must give you a written explanation of your rollover rights and must facilitate a direct transfer if you ask for one.
Step 4: Deposit, confirm, and invest the money
If you receive a check made payable to your IRA provider, forward it to them promptly — many now accept a photo upload through their app. Electronic transfers land automatically.
Then comes the step savers most often forget: actually invest the money. Cash that arrives in a rollover IRA does not invest itself. It sits in a low-yield settlement fund until you choose what to buy. A balance left uninvested for months can quietly cost you a meaningful chunk of a year's growth. Pick your investments as soon as the funds clear.
Finally, keep your records. A rollover is not taxable, but it is reportable. You will receive a Form 1099-R from your old plan and a Form 5498 from your new IRA, and the rollover must be reported on your federal tax return even though no tax is due.
What you cannot roll over
A few items are off-limits. You cannot roll over a required minimum distribution (RMD) — if you are old enough to be taking RMDs, that portion must be paid out and taxed. You also cannot roll over a 401(k) loan treated as a distribution, a hardship withdrawal, or one of a series of substantially equal periodic payments. For nearly everyone moving a balance after leaving a job, though, the full amount is what the IRS calls an "eligible rollover distribution" and moves freely.
One more myth to retire: the one-rollover-per-year limit. It exists, but it applies only to IRA-to-IRA 60-day rollovers. Direct rollovers from a 401(k) to an IRA — and trustee-to-trustee transfers — are not subject to it. You can do as many as you need.
The bottom line
A 401(k) rollover is not complicated, but it is unforgiving of shortcuts. Choose a direct rollover, open the IRA before you call the plan, decide deliberately between traditional and Roth, and invest the cash the moment it arrives. Get those four things right and you have moved your retirement savings into an account with more choice and often lower costs — without handing a cent to the IRS.
Do you still have an old 401(k) parked with a former employer? It may be the most overlooked account you own — and the easiest to put back to work.
