Rule of 55: 401(k) Withdrawals Without the 10% Tax and Rollover Pitfalls

A worked example for anyone in their 50s thinking about leaving a job before 59½.

What is the rule of 55?

The rule of 55 lets you take money from a 401(k) or similar plan without the usual 10% additional tax if you leave that employer in or after the year you turn 55. You still owe regular income tax. It applies only to that employer's plan, and rolling the money to an IRA ends it.

Normally, money taken from a retirement plan before age 59½ gets hit with an additional tax equal to 10% of the taxable amount. "Rule of 55" is a nickname, not a term in the tax code. On the IRS list of exceptions, it appears as the separation-from-service exception, and the table marks it "yes" for qualified plans such as a 401(k) and "no" for IRAs.

This guide is for one specific reader: someone in their 50s who is thinking about quitting, retiring or taking a buyout, and who has most of their savings in a workplace plan. Our broader guide on accessing retirement money early compares all the options. This one goes deep on a single rule, because the details decide whether it works.

Do you qualify? The timing test

The test is about the calendar year, not your birthday. The IRS says the exception applies when you separate from service "during or after the year" you reach age 55. So someone who turns 55 in November and leaves in March of that same year qualifies. Someone who leaves in December and turns 55 the following January doesn't, even though they were only weeks away.

That second case is the expensive one. If you leave at 54, waiting until 55 doesn't fix it for that plan, since the separation happened too early. If your departure date is flexible and your birthday falls near a year-end, the calendar is worth checking before you give notice.

Some workers qualify earlier. The IRS uses age 50 for qualified public safety employees, and its Form 5329 instructions describe the exception as age 50 for those workers and private-sector firefighters, or 25 years of service under the plan, whichever is earlier. The IRS also lists specified federal law enforcement officers, corrections officers, customs and border protection officers, federal firefighters and air traffic controllers in this group. If you might fit, confirm which category applies to you.

Which accounts count, and which don't

The exception follows one account: the plan of the employer you just left. Fidelity puts it simply, saying it "only applies to a former employer's retirement plan" you separate from in the year you turn 55 or later.

That leaves out three common pots of money. An IRA doesn't qualify at all. A rollover IRA doesn't either, even if every dollar came from a 401(k). And a 401(k) from a job you left at 48 stays outside the rule, because you weren't 55 when you left that employer.

There's one planning move for that old 401(k). SoFi notes that old balances can be covered if you roll them into your current workplace plan before you leave that job. The timing has to come first, and your plan has to agree, since the IRS says a retirement plan isn't required to accept rollovers. Ask early, because these transfers can take a while.

The catch: your plan makes the rules

The tax law allows the exception, but your employer's plan decides how you can actually get the money. The IRS says that to receive a distribution, you have to meet the plan's conditions, and that your summary plan description should clearly say when a distribution can be made.

This is where many plans get tricky. Fidelity warns that "many plans do not offer partial withdrawals once you've left your job," and SoFi says some people may have to withdraw the whole balance. Taking a full $500,000 in one tax year could push much of it into higher brackets, so a plan with that limit changes the math.

Before you resign, it's worth asking your plan administrator a few direct questions and getting the answers in writing:

• Does the plan allow withdrawals after separation for people under 59½?
• Can I take partial withdrawals, and how often?
• Are there fees or minimums for each withdrawal?
• Can I take some money and directly roll over the rest?
• How does the plan handle Roth 401(k) money separately?

A worked example: Marcus, 56, leaves his job

Marcus leaves his job in the year he turns 56. He has $500,000 in that employer's 401(k), and $120,000 in a rollover IRA from an older job. He wants to bridge to age 59½, about three and a half years away, and to spend $48,000 a year from his savings before taxes. His plan allows partial withdrawals. The numbers below are for illustration, and his actual tax depends on his other income, deductions and state.

Path one: withdraw from the 401(k). He takes $48,000 from the plan. The 10% additional tax is $0, because he qualifies. But the IRS says a retirement plan distribution paid to you has mandatory 20% withholding. So the plan sends $9,600 to the IRS and $38,400 to Marcus. Withholding isn't his final bill. If his income tax on this money ends up at $5,760, or 12%, he gets $3,840 back at tax time. If it ends up higher, he owes the difference.

Path two: withdraw from the IRA instead. The same $48,000 from the rollover IRA gets no help from this rule. If no other exception applies, he owes an extra $4,800 on top of regular income tax.

Path three: the rollover mistake. Marcus's bank suggests moving the whole 401(k) into an IRA the week he leaves. It's a tidy idea and it isn't taxed, but the separation exception doesn't apply to IRAs. Over three and a half years, withdrawals of $168,000 from that IRA could mean $16,800 in additional tax that path one avoids.

There is a middle route. If his plan allows it, Marcus could leave $200,000 in the 401(k), enough for $168,000 of withdrawals plus a cushion, and do a direct rollover of the other $300,000. A direct rollover has no tax withheld, and the money he kept in the plan still qualifies. He gives up the exception only on the part he moved, which he doesn't expect to need before 59½.

One more number helps with budgeting. To end up with $40,000 in hand after 20% withholding, Marcus has to request $50,000, since $40,000 divided by 0.8 is $50,000.

How the taxes get reported

The rule removes the 10% additional tax, but it doesn't remove regular income tax. Pre-tax withdrawals count as income in the year you take them. That extra income can also affect other parts of your finances, such as premium tax credits if you buy coverage through the marketplace. Our guide to health insurance before Medicare covers that side of early retirement.

At tax time, watch your Form 1099-R. If box 7 doesn't show an exception, the IRS says you file Form 5329 to claim it, using exception number 01 on line 2. The IRS warns that "in general, you must file Form 5329 to report an exception" to the 10% tax from a qualified plan. If the form doesn't show it correctly and you ignore it, you could be billed for a tax you don't owe.

What happens if you take another job?

Starting a new job doesn't automatically end the exception for the old plan. Fidelity says you could keep taking withdrawals until 59½ "as long as the account you're withdrawing from stays with the former employer," and that the money can't be rolled into an IRA or another workplace plan. That can make a bridge job workable, and it fits into a broader plan for which accounts to draw from first.

Once you pass 59½, the 10% additional tax generally stops applying. At that point, many of the reasons to keep the money in the old plan go away, and a rollover may be easier to weigh on fees and investment choices alone.

Your before-you-leave checklist

The order of these steps matters, because several can't be undone after your last day. Work through them with your plan's documents in front of you, and consider a tax professional if the amounts are large.

1. Confirm the calendar year you turn 55 and your planned separation date.
2. Read your summary plan description, and ask about partial withdrawals.
3. If you have an old 401(k), ask whether your current plan accepts rollovers, and move it before you leave.
4. Estimate how much you'll need from this plan until age 59½.
5. Keep at least that much in the plan, and leave it there.
6. If you roll over the rest, use a direct rollover.
7. Request enough to cover the 20% withholding.
8. At tax time, check box 7 on Form 1099-R and file Form 5329 if needed.