401(k) to IRA Rollover: Direct vs Indirect, and the 20% Withholding Trap

A direct rollover moves money from an employer plan to an IRA without the money ever being payable to you. The plan either wires the funds or mails a check made out to the receiving custodian, for example "XYZ Custodian FBO Your Name," sometimes sent to your home for you to forward. Because the check is not payable to you, there is no mandatory withholding and nothing to replace. The plan issues a Form 1099-R with distribution code G, which reports the move as a nontaxable rollover. This is the default you should ask for by name on the distribution form, and it is also how you move money into a new employer's 401(k) if that plan accepts roll-ins.

An indirect rollover is where people get hurt. If the plan pays the distribution to you, it must withhold 20% for federal income tax, and you cannot waive it. Suppose a 58-year-old leaves a job with a $500,000 401(k) and asks for a check. The plan sends $400,000 and remits $100,000 to the IRS. To complete a fully tax-free rollover, $500,000 must land in an IRA within 60 days, which means finding $100,000 from savings. If only the $400,000 is deposited, the $100,000 is a taxable distribution. At a 24% federal rate plus Arizona's 2.5%, that is roughly $26,500 of tax, plus a $10,000 penalty if under 59 1/2 and no exception applies. The withheld $100,000 is credited on the return, but only months later.

The one-rollover-per-12-months rule applies to IRA-to-IRA 60-day rollovers, and it applies across all of your IRAs combined, not per account. A second indirect IRA rollover within 12 months is treated as a taxable distribution and, if deposited, possibly an excess contribution. Trustee-to-trustee transfers between IRAs, direct rollovers from employer plans to IRAs, and Roth conversions are not subject to the limit. The simple rule: move money institution to institution, and never let an IRA distribution check be made payable to you unless there is no alternative.

If you miss the 60-day window for reasons outside your control, such as an error by the financial institution, a lost check, a serious illness, a death in the family, or a postal error, Revenue Procedure 2020-46 lets you self-certify to the receiving custodian that you qualify for a waiver, as long as you deposit the money as soon as practicable after the reason ends (generally within 30 days). Self-certification is not a guarantee: the IRS can still review it on audit. Without a qualifying reason, the only other route is a private letter ruling, which is expensive and slow.

Some money should not go into a traditional IRA at all, and some should not move. After-tax contributions in a 401(k) can be split under IRS Notice 2014-54: pre-tax dollars and earnings to a traditional IRA, and after-tax basis directly to a Roth IRA, converting that basis to Roth with no tax. Roth 401(k) money can roll to a Roth IRA, but the Roth IRA has its own five-year clock for tax-free earnings, and years in the Roth 401(k) do not count toward it, so opening a Roth IRA early starts the clock. In a year you owe an RMD, the RMD must be taken first and cannot be rolled over. Employer stock with a large gain deserves a separate net unrealized appreciation analysis before anything is rolled, because rolling it into an IRA permanently forfeits the NUA treatment.

There are real reasons to leave money in the plan. The Rule of 55 lets you take penalty-free withdrawals from the 401(k) of the employer you leave in or after the year you turn 55, but that exception disappears once the money is in an IRA. Governmental 457(b) plans have no 10% penalty at any age. Large plans often offer institutional share classes and stable value funds that cost less than retail equivalents. ERISA plans have strong federal protection from creditors, while IRA protection outside bankruptcy depends on state law. And if you plan to do backdoor Roth contributions while still working, pre-tax money left in a 401(k) does not count against you under the pro-rata rule, while the same money in a rollover IRA does.

Decide whether to roll before deciding how. Leaving a job at 56 and needing income before 59 1/2 is a strong reason to keep at least part of the money in the 401(k) and use the Rule of 55. Holding appreciated employer stock is a strong reason to run the NUA numbers first. Wanting consolidation, better investment choices, and easier Roth conversions and withdrawal planning are strong reasons to roll. Many people end up doing both: a partial rollover while leaving a bridge amount in the plan.

If you do roll, request a direct rollover in writing and confirm the exact payee line the receiving custodian wants. If the plan will only mail the check to you, make sure it is payable to the custodian FBO you, then deposit it immediately. Keep the plan's distribution statement showing any after-tax basis, because the split between a traditional IRA and a Roth IRA depends on that number and the plan is the only reliable source for it.

If you already took an indirect distribution, act now. Count the days, find the cash to replace the withheld 20%, and deposit the full gross amount into an IRA before day 60. If you cannot replace all of it, deposit what you can: the unreplaced portion is taxable, but the rest stays sheltered. Plan for the tax on the shortfall in your estimated payments or withholding so you are not hit with an underpayment penalty on top of it.

For those at or past RMD age, sequence matters: take the full year's RMD from the plan first, then roll the rest. Rolling an RMD creates an excess IRA contribution that has to be corrected. And if you are still working past 73 and do not own 5% or more of the company, your current employer's plan may let you delay RMDs from that plan, which is a reason to consider rolling old IRAs into it rather than the other way around.

• Asking the plan to send the check to you, triggering the mandatory 20% withholding and a 60-day scramble to replace the withheld amount from other savings.
• Depositing only the net check after an indirect rollover and not realizing the withheld 20% becomes taxable income, plus a 10% penalty for those under 59 1/2 without an exception.
• Doing a second IRA-to-IRA 60-day rollover within 12 months, which is treated as a taxable distribution.
• Rolling a 401(k) into an IRA at 55 or 56 and losing Rule of 55 access to penalty-free withdrawals before 59 1/2.
• Rolling appreciated employer stock into an IRA without evaluating net unrealized appreciation, permanently converting future capital gains into ordinary income.
• Sending after-tax 401(k) basis into a traditional IRA instead of splitting it to a Roth IRA, creating basis that has to be tracked on Form 8606 for years.
• Trying to roll over the current year's RMD, which is not eligible for rollover and becomes an excess contribution.