A 401(k) rollover moves retirement savings out of a former employer’s plan and into an IRA or a new employer’s plan without triggering a tax bill, as long as you follow the mechanics. The safest path is a direct rollover, where the old plan sends the money straight to the new account and you never touch it. The riskier path is an indirect rollover, where the plan cuts you a check minus 20% federal withholding and starts a 60-day clock to redeposit the full pre-withholding amount. Miss the mechanics on the indirect version and what should have been a routine move becomes taxable income, potentially with a 10% early withdrawal penalty attached.
Direct Rollover vs. Indirect Rollover
The two methods look similar on paper and behave very differently in practice.
A direct rollover sends your balance from the old plan’s custodian to the new custodian without passing through your bank account. Nothing is withheld for taxes. There is no 60-day deadline.1Office of the Law Revision Counsel. 26 USC 3405 – Special Rules for Pensions, Annuities, and Certain Other Deferred Income This is the cleanest way to move the money, and it’s what most administrators will default to if you ask.
An indirect rollover puts the money in your hands first. The plan cuts a check payable to you, withholds 20% of the taxable portion for federal income tax, and leaves you 60 days from the day you receive the distribution to get it into an eligible plan or IRA.2Office of the Law Revision Counsel. 26 USC 402 – Taxability of Beneficiary of Employees Trust If you miss that window by a day, the distribution becomes taxable income for the year, and if you’re under 59½ the IRS adds a 10% early withdrawal penalty.3Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
How to Set Up a Direct Rollover
Start by opening the receiving account, whether that’s an IRA at a brokerage or a new employer’s 401(k). You’ll need the new account number, the receiving institution’s exact legal name, and its mailing address.
Then contact the old plan administrator, usually through the former employer’s benefits portal or HR, and request a distribution election form. Choose the direct rollover option and provide the receiving institution’s details. The check or wire should be made payable to the new custodian “for the benefit of” (FBO) you. That payee line is what tells the IRS this is not a personal distribution.
Some administrators mail the FBO check to your home address and expect you to forward it to the new custodian. That still counts as a direct rollover as long as the check names the new custodian on the payee line, not you. Do not endorse it or deposit it into a personal account.
The 60-Day Clock and the 20% Withholding Trap
The 60-day period starts when you receive the distribution, not when the plan mails it and not when you deposit it into the new account. Keep proof of the receipt date: a postmarked envelope, a delivery tracking record, or a notification screenshot. If the IRS questions your timing, that documentation is your only defense.
The withholding math is where indirect rollovers get expensive. Federal law requires the plan administrator to withhold 20% of the taxable portion when they pay you directly.1Office of the Law Revision Counsel. 26 USC 3405 – Special Rules for Pensions, Annuities, and Certain Other Deferred Income On a $100,000 balance you receive a check for $80,000. But the IRS still considers $100,000 to be the rollover amount. To complete a fully tax-free rollover you have to deposit $100,000 into the new account within 60 days, meaning you need to come up with the missing $20,000 from other savings.
Deposit only the $80,000 you actually received and the missing $20,000 is treated as a permanent distribution. It’s taxed as income, and the 10% penalty applies to it if you’re under 59½. You’ll get credit for the $20,000 withheld when you file your return, but the tax on the shortfall is a separate hit. This math is the single best reason to use a direct rollover instead.
State withholding may apply on top of federal withholding depending on where you live. Ask the administrator what the net check will be before you request a distribution.
Where a 401(k) Can Legally Go
Federal law defines “eligible retirement plans” for rollover purposes to include traditional IRAs, new employer 401(k) plans, 403(b) plans, governmental 457(b) plans, and SEP-IRAs.2Office of the Law Revision Counsel. 26 USC 402 – Taxability of Beneficiary of Employees Trust Pre-tax 401(k) money can go to any of them. The IRS publishes a rollover chart with every permissible combination, and it’s worth checking before you start, because not every receiving plan accepts every source of funds.4Internal Revenue Service. Rollover Chart
Designated Roth 401(k) money is more restricted. It can only go to a Roth IRA or another plan’s designated Roth account, never to a traditional IRA.5Office of the Law Revision Counsel. 26 USC 402A – Optional Treatment of Elective Deferrals as Roth Contributions If your 401(k) holds both pre-tax and Roth money, keep them separated during the transfer: pre-tax to a traditional IRA, Roth to a Roth IRA.
Rolling pre-tax 401(k) money into a Roth IRA is legal but is a Roth conversion, not a tax-free rollover. The entire converted amount counts as taxable income for the year, though the 10% early withdrawal penalty does not apply.4Internal Revenue Service. Rollover Chart
What Can’t Be Rolled Over
A handful of distributions are ineligible for rollover no matter which method you use:
- Required minimum distributions once you’ve reached RMD age
- Hardship withdrawals
- Substantially equal periodic payments made annually over your life expectancy or for ten years or more
- Corrective distributions returning excess contributions or excess deferrals
- Defaulted plan loans (unless they qualify as a plan loan offset)
- Dividends paid through an ESOP on employer stock
If an ineligible amount slips into a receiving IRA, the IRS can treat it as an excess contribution and charge a 6% excise tax for every year it remains in the account.6Internal Revenue Service. Topic No. 413, Rollovers From Retirement Plans
If You Miss the 60-Day Deadline
There are two ways to salvage a late rollover, and neither is automatic.
Self-Certification
The IRS lets you self-certify a late rollover without asking permission first, as long as the delay was caused by one of twelve specific reasons. Those include a financial institution’s error, a misplaced check you never cashed, severe damage to your home, serious illness in your family, incarceration, a postal error, or the distributing plan’s delay in providing information the receiving plan needed.7Internal Revenue Service. Revenue Procedure 2020-46 You give a signed written certification to the receiving trustee and make the contribution as soon as practicable after the cause is resolved, generally within 30 days. There’s no fee. Keep the certification in your records; the IRS can review and reject it during an audit.
Private Letter Ruling
If none of the twelve reasons fit, you can request a private letter ruling asking the IRS to grant a waiver. The user fee is $10,000, and the IRS may still deny the request.8Internal Revenue Service. Retirement Plans FAQs Relating to Waivers of the 60-Day Rollover Requirement For most people this route only makes sense on a balance large enough to justify the fee.
Special Situations
Outstanding 401(k) Loan
Leaving a job with an unpaid 401(k) loan usually triggers a plan loan offset: the plan reduces your account balance by the loan amount and treats it as a distribution. For a qualified plan loan offset caused by separation from service or plan termination, the rollover deadline stretches from 60 days to your tax-filing due date for that year, including extensions.9Internal Revenue Service. Plan Loan Offsets To qualify, the offset must occur within 12 months of separation and the loan must have been in good standing immediately before you left. Rolling it over means coming up with cash equal to the loan balance and depositing it into an IRA or new plan.
Highly Appreciated Employer Stock
If your 401(k) holds employer stock that has appreciated significantly, rolling it into an IRA may cost you a valuable tax break. Net unrealized appreciation lets you take a lump-sum distribution of the actual shares and pay ordinary income tax only on the stock’s original cost basis. The appreciation above that basis is taxed at long-term capital gains rates when you eventually sell.10Internal Revenue Service. Notice 98-24 – Net Unrealized Appreciation in Employer Securities Roll the shares into an IRA instead and every future dollar comes out as ordinary income. NUA requires a lump-sum distribution of the entire plan account triggered by separation, reaching 59½, disability, or death.
The Once-Per-Year Rule
You may have heard you can only do one rollover per year. The rule is narrower than it sounds. It applies only to indirect IRA-to-IRA rollovers, where you withdraw from one IRA and deposit into another within 60 days. It does not apply to 401(k)-to-IRA rollovers, plan-to-plan rollovers, direct trustee-to-trustee transfers, or Roth conversions.11Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
Where it matters is later. Once your 401(k) money has landed in an IRA, any future indirect rollover from that IRA to another IRA is subject to the one-per-year limit across all of your IRAs combined.12Office of the Law Revision Counsel. 26 USC 408 – Individual Retirement Accounts Use direct trustee-to-trustee transfers for any subsequent IRA moves and the limit doesn’t apply.
Confirming the Rollover on Your Tax Forms
Two forms document the transaction. The old plan issues Form 1099-R. For a direct rollover, box 2a (taxable amount) should show zero and box 7 should contain distribution code G. For a completed indirect rollover, box 2a may show the full distribution amount, and you report the rollover on your return so the IRS doesn’t tax you on it.13Internal Revenue Service. Instructions for Forms 1099-R and 5498
The receiving institution files Form 5498, which reports the rollover contribution to your IRA and is typically issued the following May. Check that the amount matches what you expected to transfer. Keep both forms and any confirmation letters from the receiving custodian for at least three years after filing. Outbound transfer fees from the old plan and setup fees at the new custodian vary by provider, so ask both sides what to expect before you initiate the move.