Retiring at 55 and still working is allowed, and the tax code has a specific provision built for it. The Rule of 55 lets you draw from your most recent employer’s 401(k) or 403(b) without the usual 10% early withdrawal penalty, and picking up a new job — part-time, consulting, or a full second act — does not undo that treatment. What trips people up is not the rules on working. It’s what happens when wages and retirement distributions land on the same tax return, and what happens to health coverage in the ten-year gap before Medicare.
The Rule of 55, and How to Avoid Breaking It
The tax code normally imposes a 10% penalty on retirement account withdrawals taken before age 59½. The Rule of 55 carves out an exception: if you separate from your employer during or after the calendar year you turn 55, you can take distributions from that employer’s plan penalty-free. The separation can be voluntary or involuntary. Quitting, being laid off, and being fired all count. What matters is that the employment relationship with the employer holding the plan has ended.
Two limits do most of the damage when people miss them.
First, the exception only reaches the plan at the employer you just left. Money in an IRA doesn’t qualify. Neither does a 401(k) from a job you left years ago. If you roll your current 401(k) into an IRA after separating, you lose the Rule of 55 on that money entirely. Keep it in the employer plan if you want penalty-free access.
Second, every dollar you pull is still ordinary income. The penalty goes away; the income tax does not. Plan administrators must withhold 20% for federal taxes on eligible rollover distributions before the money reaches you, and that 20% is a down payment, not a settlement.
Starting a new job after you’ve begun taking distributions does not retroactively trigger the penalty. The IRS looks at your employment status when you separated from the employer holding the plan. You can leave a long career at 55, start drawing from that 401(k), and take a job somewhere else without jeopardizing the penalty-free treatment on the withdrawals you’ve already taken.
Other Ways to Reach Retirement Money Early
The Rule of 55 is the common path, but a few others fit specific situations.
Governmental 457(b) Plans
If you worked for a state or local government and have a 457(b), distributions are not subject to the 10% early withdrawal penalty at any age once you separate from service. You don’t need to wait until 55. Distributions are still ordinary income. If assets were rolled into the 457(b) from a different type of retirement account, the penalty may still apply to those transferred amounts.
Public Safety Employees
Qualified public safety employees — state and local police officers, firefighters, emergency medical personnel, corrections officers, and certain federal law enforcement and border protection officers — can take penalty-free distributions from a governmental plan after separating at age 50, or after 25 years of service, whichever comes first.
Substantially Equal Periodic Payments
If your retirement savings are already in an IRA and the Rule of 55 is off the table, you can use substantially equal periodic payments (a SEPP or 72(t) distribution). You commit to a fixed series of payments based on your life expectancy using one of three IRS-approved methods. You don’t have to be separated from service to use SEPP with an IRA.
The commitment is strict. Once you start, you cannot modify the payment schedule until the later of five years or reaching age 59½. Change the amount, take an extra withdrawal, or add money to the account, and the IRS retroactively applies the 10% penalty to every distribution you’ve taken.
The Tax Stacking Problem
The biggest surprise for people who retire at 55 and keep working is the tax bill. The IRS adds up all your income — wages from the new job, 401(k) distributions, pension payments, investment returns — and taxes the total. That combined number can push you into a higher marginal bracket than either income stream would create on its own.
For 2026, a single filer crosses from the 12% bracket into the 22% bracket at $50,401 of taxable income, and into the 24% bracket at $105,701. Pull $40,000 from your 401(k) and earn $35,000 at a bridge job, and that $75,000 combined puts roughly $25,000 into the 22% bracket that might have stayed at 12% if either source existed alone. Married couples filing jointly have wider brackets, but the stacking works the same way.
Withholding Gaps and Estimated Payments
Your new employer withholds taxes based only on the salary they pay you. They don’t know you’re also taking distributions. Meanwhile, the 20% withheld from your plan distributions may not be enough once the two streams combine. The result is an underpayment at filing time.
You can fix this in two ways. Adjust your Form W-4 at the new job to increase withholding, or make quarterly estimated tax payments to the IRS. To avoid the underpayment penalty, you need to pay at least 90% of your current-year tax liability or 100% of last year’s tax, whichever is less. If your adjusted gross income exceeded $150,000 the prior year, the safe harbor rises to 110% of the prior year’s tax.
Health Insurance From 55 to 65
Medicare doesn’t start until 65. Retiring at 55 leaves up to a decade without employer-sponsored coverage, and health insurance is often the single largest expense in early retirement.
COBRA
After leaving your job, COBRA lets you continue your employer’s group health plan for up to 18 months, or 36 months in some circumstances such as disability. You pay both the employee and employer portions of the premium plus a 2% administrative fee, for up to 102% of the plan’s cost. That often means $600 to $800 a month for individual coverage or well over $1,500 for a family. COBRA works as a short bridge and rarely as a long-term answer.
ACA Marketplace Plans
The Affordable Care Act marketplace covers most early retirees for the years before Medicare. Premium tax credit eligibility depends on your household income relative to the federal poverty level. Early retirees have some leverage here: by managing how much they withdraw from retirement accounts each year, they can keep income in the range where meaningful subsidies apply. Traditional 401(k) withdrawals count as income for subsidy purposes, so a large lump-sum distribution can wipe out premium assistance for the year.
Health Savings Accounts
If your bridge job or marketplace plan is a high-deductible health plan, you may be able to contribute to a Health Savings Account. For 2026, the contribution limit is $4,400 for self-only coverage or $8,750 for family coverage. At 55 or older, you can add a $1,000 catch-up contribution. HSA money goes in tax-free, grows tax-free, and comes out tax-free for qualified medical expenses. If you lose HDHP eligibility partway through the year, the contribution limit is prorated by the months you were eligible.
Pensions Are Different From 401(k)s
Defined benefit pension plans follow different rules than 401(k) plans, and they are more restrictive when it comes to working while collecting benefits. The IRS requires a bona fide separation from service before pension distributions can begin, with no prearranged agreement to come back. If you retire on Friday and start a consulting contract with the same employer on Monday, the IRS can treat the retirement as a sham and disqualify the distributions.
Working for a different, unrelated employer generally doesn’t affect your pension payments. The complications start when you return to the same employer or an affiliated one. Under federal rules, a plan may be required to stop payments entirely if you haven’t yet reached age 62 or the plan’s normal retirement age and you resume employment with that employer.
The 40-Hour Suspension Rule
Many pension plans suspend benefits when a retiree works 40 or more hours in a month in the same industry or for the same employer. The threshold comes from federal regulations, and individual plans spell out the specifics in their governing documents. Working 38 hours a month at a part-time job in your former industry might be fine; 40 triggers a suspension that lasts as long as the employment continues.
Before suspending payments, the plan must notify you in writing during the first month it withholds a check. That notice has to explain why benefits are being suspended, cite the relevant plan provisions, and tell you how to request a review. If you’re considering part-time work in your old field, ask the plan administrator in advance. Regulations require them to tell you whether specific contemplated employment would trigger a suspension.
Once you stop the employment that triggered the suspension, benefits should resume. Some plans require you to file a formal benefit resumption notice before payments restart. If the plan overpaid you during a period when benefits should have been suspended, it can offset future payments to recover the excess.
Social Security Comes Later, but It’s Worth Knowing
Social Security is not on the table yet. The earliest you can claim retirement benefits is 62, and full retirement age is 67 for anyone born in 1960 or later. If you plan to keep working into your 60s and claim benefits early, the earnings test will matter then.
For 2026, if you collect Social Security before full retirement age and earn more than $24,480 from wages or self-employment, the Social Security Administration reduces your benefit by $1 for every $2 earned above that limit. In the calendar year you reach full retirement age, the threshold rises to $65,160 and the reduction drops to $1 for every $3 in excess earnings, counting only the months before you hit FRA. The withheld amount is not gone permanently; Social Security recalculates your monthly benefit upward at full retirement age to account for the months that were withheld.
One detail matters for planning. The earnings test counts only wages and net self-employment income. It does not count 401(k) distributions, pension payments, investment income, or annuities. Once you’re claiming Social Security, you can withdraw as much as you want from your retirement plan without affecting your benefit.