How to Roll Over a 401(k): The Complete 2026 Guide
A 401(k) rollover moves retirement money from a former employer’s plan into another tax-advantaged account without cashing out. You have four choices. You can leave the money in the old plan, roll it into your new employer’s 401(k), roll it into a traditional IRA tax-free, or convert it to a Roth IRA, which is allowed but taxable.
On this page
Some links on this page may earn us a commission at no cost to you. How we make money.
Always request a direct rollover, which means the check is made payable to the receiving financial institution and never to you. A distribution paid to you personally loses 20% to mandatory federal withholding and starts a 60-day clock to redeposit the full amount, including the withheld 20% you never received.
Source: IRC §401(a)(31); IRC §3405(c); IRC §402(c)(3)
What is a 401(k) rollover?
A rollover is a transfer of money between tax-advantaged retirement accounts that keeps its tax-deferred (or Roth) status intact. The IRS rollover guide covers the full set of rules. Instead of taking a distribution, which for pre-tax money means income tax plus a possible 10% penalty, you move the balance into another qualified home. No tax is due on the move itself, with one exception we cover below, which is converting pre-tax money to Roth.
Rollovers usually happen when you leave a job, but they also come up when you are consolidating old accounts you’ve tracked down, or when you take an in-service distribution after age 59½. Federal law requires a plan to let you roll money out once you have a distributable event, which is simply an event like leaving the job that entitles you to take the money. Accepting a rollover in is a different matter, because that is optional for the receiving plan. Most plans accept roll-ins, but check first rather than assuming.
What’s the difference between a direct and an indirect rollover?
A direct rollover (also called a trustee-to-trustee transfer) sends the money straight from the old plan to the new account. The check is made payable to the new custodian for your benefit, even if it gets mailed to your house for you to forward. No tax is withheld, nothing is reported as taxable, and there is no deadline pressure on you at all.
An indirect rollover means the plan pays you, and you redeposit the money yourself. Two traps come with that arrangement, and both of them are expensive.
- The 20% withholding trap. A 401(k) distribution that’s eligible for rollover but paid to you carries mandatory 20% federal withholding (IRC §3405(c)). To complete a tax-free rollover you must deposit the full original amount, replacing the withheld 20% from your own pocket, and recover the withholding when you file your return.
- The 60-day rule. You have 60 days from receipt to complete the deposit (IRC §402(c)(3)). Miss it and the whole amount becomes a taxable distribution, plus the 10% penalty if you’re under 59½ and no exception applies.
One rule gets misapplied here constantly. The once-per-12-months limit on indirect rollovers applies only to IRA-to-IRA rollovers (IRC §408(d)(3)(B)). It does not restrict 401(k)-to-IRA rollovers, 401(k)-to-401(k) rollovers, or direct transfers of any kind. You can do as many of those as you like in a year.
| 401(k) balance distributed to you | $50,000 |
| Mandatory 20% federal withholding | −$10,000 |
| Check you actually receive | $40,000 |
| Amount you must deposit within 60 days for a fully tax-free rollover | $50,000 |
Rolling over in five steps
- Choose the destination. Your options are the new employer’s 401(k), a traditional IRA, a Roth IRA, or leaving the money where it is. The framework below walks through the trade-offs.
- Open the receiving account first. You’ll need the account number and the custodian’s rollover deposit instructions before the old plan will cut a check. If you’re rolling into a new employer’s plan, confirm it accepts roll-ins and ask what paperwork it requires. Some plans want a letter or your signed certification that the money comes from a qualified plan.
- Call the old plan’s recordkeeper and request a direct rollover. The recordkeeper is the company that administers the account and mails your statements. At Fidelity, Empower, Vanguard, Principal, or Voya the flow is similar: log in or call the participant line, choose “rollover” under distributions, and give them the receiving custodian’s name and your new account number. Say the words “direct rollover,” and confirm the check will be payable to the new custodian rather than to you.
- Follow the check. Many recordkeepers still mail a paper check, often to your address, made out to the new custodian “FBO” (for benefit of) you. That is still a direct rollover, so forward or deposit it promptly per the receiving custodian’s instructions, and track it until it posts. If a rollover seems stuck past a few weeks, call both ends.
- Invest the money. Rollover money arrives as cash, and receiving accounts do not auto-invest it. Leaving a rollover sitting uninvested, sometimes for years, is the single most common and most expensive rollover mistake. Log in after the deposit posts and buy your chosen investments the same week.
- ☐ Have the new account number in hand. Open the receiving IRA or confirm the new 401(k) before you call, because the old plan will ask for the number on the spot.
- ☐ Know the receiving custodian’s exact name and deposit instructions. Most custodians publish a rollover mailing address and a specific “make the check payable to” line. Read it to the recordkeeper word for word.
- ☐ Say the words “direct rollover” out loud. Don’t say “withdrawal,” “cash out,” or “distribution,” because those words can route your request into a taxable payout.
- ☐ Confirm the check is payable to the custodian, not to you. Ask the representative to read the payee line back to you before you hang up.
- ☐ Follow the check until it posts. Note the date it was issued, and call both companies if it hasn’t landed in about two weeks.
- ☐ Invest the cash once it arrives. The money sits in a settlement or money-market position until you place the trades yourself.
Choosing a destination: new 401(k) vs. IRA
There is no universally right answer here, and anyone who tells you otherwise is selling something. Each destination wins for a different person, so here is the honest comparison.
| Option | Strengths | Weaknesses |
|---|---|---|
| Leave it in the old plan | No action needed, keeps cheap institutional funds if the plan has them, and keeps both ERISA creditor protection and the rule of 55 if you separated at 55 or older | One more account to track, which is how 401(k)s get lost. No new contributions are allowed, and you can be forced out if the balance is under $7,000 |
| New employer’s 401(k) | One consolidated account, full ERISA creditor protection, a preserved future rule of 55 at the new job, and an empty IRA that keeps backdoor Roth contributions simple | The plan has to accept roll-ins, and you’re limited to the new plan’s fund menu and fees |
| Traditional IRA | The widest investment choice, your pick of provider and fees, and every old plan consolidated in one place | You lose the rule of 55 and the QDRO penalty exception. Creditor protection outside bankruptcy varies by state, and a pre-tax IRA balance triggers the pro-rata rule on future backdoor Roth conversions |
| Roth IRA (conversion) | Tax-free growth and qualified withdrawals forever, with no lifetime RMDs | The entire pre-tax amount converted is taxable income this year, and a large rollover can jump you multiple brackets |
A few rules of thumb help here. If you might retire between 55 and 59½, keeping money in a 401(k) preserves the penalty-free access under the rule of 55 that an IRA gives up. If you’re a high earner doing backdoor Roth IRA contributions, rolling into the new 401(k) instead of an IRA keeps the pro-rata math clean. And if your priority is fund choice and low fees, an IRA at a low-cost provider usually wins.
Rolling into a Roth IRA (conversion)
A pre-tax 401(k) can be rolled directly into a Roth IRA, but that move is a Roth conversion, and the entire pre-tax amount becomes taxable as ordinary income in the year of the rollover. There is no income limit and no dollar limit on conversions. The only real constraint is the tax bill, and it can be large. Converting a $100,000 pre-tax balance adds $100,000 to your taxable income, which is why many people convert in slices over several low-income years instead of all at once.
Two related moves are tax-free, and they are worth knowing about.
- Roth 401(k) → Roth IRA. Already-Roth money rolls to a Roth IRA with no tax. One nuance: the Roth IRA’s own five-year clock takes over. If the rollover creates your first Roth IRA, a fresh five-year clock starts even if your Roth 401(k) was a decade old. Details are in the Roth 401(k) guide.
- After-tax basis → Roth IRA. Under IRS Notice 2014-54, after-tax (non-Roth) contributions can be split at rollover: basis to a Roth IRA tax-free, earnings to a traditional IRA. This is the mega-backdoor-Roth mechanic.
Reverse rollover: IRA into a 401(k)
This move works if your plan accepts roll-ins from IRAs, which is an optional plan feature you’ll need to ask your administrator about. Only pre-tax IRA money can move into a 401(k). After-tax IRA basis cannot be rolled into a plan (IRC §408(d)(3)(A)(ii)), and Roth IRA money can never be rolled into a 401(k), not even into its Roth account.
Why do it? The main reason is the backdoor Roth. Moving your pre-tax IRA balance into a 401(k) empties the IRA, so future backdoor Roth IRA conversions aren’t taxed pro-rata against pre-tax money. There are two secondary reasons as well, which are stronger ERISA creditor protection and putting the money where a future rule of 55 could reach it.
Amounts that cannot be rolled over
Several categories of plan money are ineligible for rollover, and finding out after the fact is unpleasant.
- Required minimum distributions. Once you’re subject to RMDs, each year’s RMD must come out first and can never be rolled over. A plan rolling your full balance will carve the RMD out and pay it to you.
- Hardship withdrawals. These are not eligible rollover distributions. Once taken, a hardship withdrawal cannot be redeposited into a plan or IRA.
- Certain other payments, including corrective distributions of excess contributions and substantially-equal periodic (72(t)) payments.
One special case runs the other way. If you leave a job with an unpaid 401(k) loan, the offset amount can be rolled over. You have until your tax-filing deadline, including extensions, for the year of the offset to come up with the money and deposit it. See loan offsets for how that works.
Tax reporting for rollovers
A rollover is reportable but, when done directly to a like-kind account, not taxable. Here is the paper trail. The old plan issues Form 1099-R, and a direct rollover shows distribution code G with a $0 taxable amount. The receiving IRA custodian then reports the deposit on Form 5498.
You report the rollover on your Form 1040, and for a direct pre-tax-to-traditional rollover the taxable amount is zero. A conversion to a Roth IRA is the exception, because it shows up as taxable income. Keep both forms with your tax records. A 1099-R without a matching rollover on your return is a common source of IRS mismatch notices, and those letters are much easier to answer when you still have the paperwork.
Rollovers and contribution limits
Rollovers are not contributions, so they do not count against any contribution limit. That includes the 2026 401(k) elective deferral limit of $24,500 and the $7,500 IRA contribution limit. You can roll over $400,000 and still contribute the full annual maximum to the receiving account in the same year.
The flip side is that rollovers are not tax-deductible either, for the same reason. The money was never taxed on the way in, or it keeps whatever basis it already had.
Frequently asked questions
How long does a 401(k) rollover take?
Two to four weeks end to end is typical. That covers a few days to a couple of weeks for the old plan to process the request and issue the check, plus mail and deposit time. Fully electronic transfers between large custodians can finish in under a week. If nothing has moved after 30 days, call both custodians.
Can I roll over my 401(k) while I still work for the employer?
Generally only if your plan offers in-service distributions, which are most commonly available at age 59½, when the money becomes rollover-eligible. Before then, most plans let you roll out only rollover money you previously rolled in, or after-tax sources, if the plan allows it at all. Your plan document controls.
What happens if I miss the 60-day deadline?
The distribution becomes taxable, plus the 10% penalty if you’re under 59½ with no exception. The IRS permits self-certification for a late rollover in limited hardship circumstances, such as a lost check, serious illness, or custodian error under Rev. Proc. 2020-46, but don’t plan on it. Direct rollovers have no deadline to miss.
How many rollovers can I do in a year?
You get unlimited direct rollovers and unlimited 401(k)-involved rollovers. The once-per-12-months rule (IRC §408(d)(3)(B)) restricts only indirect IRA-to-IRA rollovers, and it allows one per rolling 12-month period across all your IRAs combined.
Is there a deadline to roll over an old 401(k)?
No. A vested balance over $7,000 can stay in a former employer’s plan indefinitely. Balances of $1,000–$7,000 can be force-transferred to a safe-harbor IRA, and balances under $1,000 can be cashed out to you, so small accounts are the ones to move promptly. See what happens to your 401(k) when you leave a job.
Should I cash out instead of rolling over?
Almost never at younger ages. A pre-tax cash-out is fully taxable, loses 20% to withholding immediately, and adds a 10% penalty under 59½ unless an exception applies. A rollover keeps every dollar working, and you can still withdraw from the new account later if you truly need the money.
Related reading
- What happens to your 401(k) when you leave a job: all four options
- How to find an old 401(k) from a previous employer
- Roth 401(k) guide: the five-year rule and Roth rollovers
Sources: IRS: rollovers of retirement plan and IRA distributions · IRS rollover chart · IRC §402(c) · IRS Notice 2014-54 · IRS Notice 2025-67 (2026 limits)