Tax Penalty on 401(k) Withdrawal: The 10%, Taxes, and Exceptions

Taking money out of a 401(k) before age 59½ triggers a 10% federal penalty on top of ordinary income tax on the full amount you withdraw. For someone in the 22% federal bracket, that means roughly a third of the withdrawal disappears before the money reaches your checking account. Add state income tax, and the tax penalty on a 401(k) withdrawal — combined with the income tax that comes with it — commonly runs 30% to 40% of the distribution.

How the 10% Penalty Works

Under Internal Revenue Code Section 72(t), any distribution from a 401(k) taken before you turn 59½ is hit with a 10% additional tax on the taxable portion of the withdrawal.¹ The IRS calls it an “additional tax” rather than a penalty, but the effect is a flat 10% surcharge on the gross taxable amount. Pull $50,000 early and $5,000 goes straight to this surcharge, separate from whatever income tax you owe.

You report and pay the 10% on IRS Form 5329, filed with your regular return. If you qualify for one of the exceptions covered below, you also use Form 5329 to claim it by entering the correct exception code.² Skipping the form doesn’t make the tax go away. The IRS will match the distribution to the 1099-R your plan filed and send you a bill plus interest.

The Income Tax on Top

The 10% surcharge is only part of the cost. Every dollar you withdraw from a traditional 401(k) counts as ordinary income in the year you receive it, taxed at the same rates as your paycheck. Federal rates for 2026 run from 10% to 37% across seven brackets. 401(k) distributions never qualify for the lower long-term capital gains rates.

The bracket math catches people off guard. Someone earning $70,000 in wages who pulls $40,000 from a 401(k) is taxed as if they earned $110,000 that year. The withdrawal doesn’t just get taxed at whatever bracket you were already in. It stacks on top, pushing the upper portion of the distribution into a higher bracket. That $40,000 could easily span the 22% and 24% brackets, costing several thousand more in federal tax than expected.

A large distribution can also reduce or eliminate income-based tax credits. The Child Tax Credit begins phasing out once modified adjusted gross income exceeds $200,000 for single filers or $400,000 for joint filers, dropping $50 per child for every $1,000 above those thresholds. A withdrawal that pushes you past one of these cliffs costs you twice: once through tax on the distribution, again through the credit you lose.

State Income Tax

Federal is only the first layer. Most states treat 401(k) distributions as taxable income, and state rates range from roughly 2% to over 13%. About eight states have no personal income tax at all, and a handful of others specifically exempt retirement income. Everyone else owes state tax on top of federal tax and the 10% penalty, which is how total losses on an early withdrawal can climb above 40% in high-tax states.

What a $30,000 Withdrawal Actually Costs

Seeing the penalty and taxes as separate line items understates the damage. Here’s how a $30,000 early withdrawal plays out for a single filer earning $65,000 in wages:

Federal income tax: the withdrawal stacks on top of $65,000 in wages, putting most of it in the 22% bracket. Roughly $6,600.
10% early withdrawal penalty: $3,000.
State income tax at 5%: another $1,500.
Total: around $11,100. More than a third of the distribution.

That $30,000 delivers about $18,900 in usable cash. And the real cost is higher still because the money can no longer compound inside the tax-sheltered account. Over 20 years at a 7% average annual return, that same $30,000 would have grown to roughly $116,000.

The 20% Withholding Surprise

When a plan administrator sends a 401(k) distribution directly to you rather than rolling it to another retirement account, federal law requires 20% to be withheld for income taxes before you get the check.³ Request $10,000 and you receive $8,000. The other $2,000 goes straight to the IRS as a prepayment.

This 20% is an estimate, not the final bill. If the withdrawal pushes you into the 24% or 32% bracket, you’ll owe more when you file. And the 20% withholding does not cover the 10% early withdrawal penalty at all. People who take a distribution in January are often shocked the following April when they owe thousands more on top of what was already withheld. The plan reports the distribution on Form 1099-R, which your tax preparer uses to calculate the actual liability.⁴

The Indirect Rollover Trap

The 20% withholding creates a specific problem if you’re trying to move money between retirement accounts using an indirect rollover, where the check goes to you first. You have 60 days to deposit the full original amount into the new account. But because the plan already sent 20% to the IRS, you only received 80% of it. To complete a full rollover and avoid any tax, you have to come up with the missing 20% out of pocket and deposit it along with the check.

Deposit only what you received and the withheld portion is treated as a taxable distribution. On a $50,000 rollover where $10,000 was withheld, depositing only $40,000 means the IRS considers that missing $10,000 a withdrawal, subject to income tax and, if you’re under 59½, the 10% penalty. A direct rollover (trustee-to-trustee transfer) avoids the whole issue because the money never passes through your hands and no withholding applies.

Ways to Avoid the 10% Penalty

Federal law carves out more than a dozen situations where you can take money from a 401(k) before 59½ without the 10% surcharge. The income tax still applies in every case. These exceptions only remove the additional 10%.⁵ You claim the exception on Form 5329 using the code that matches your situation.²

Separation From Service After Age 55

If you leave your job during or after the calendar year you turn 55, distributions from that employer’s 401(k) are penalty-free. This is often called the “Rule of 55.” It applies only to the plan at the employer you just left, not to 401(k) accounts from previous jobs or to IRAs.⁶ Public safety employees, including state and local police, firefighters, emergency medical workers, federal law enforcement, and air traffic controllers, qualify at age 50 instead.⁵

Disability and Terminal Illness

Total and permanent disability qualifies if a physician has determined that your condition prevents you from performing any substantial gainful activity and is expected to result in death or last indefinitely.²

Terminal illness is a separate exception added by the SECURE 2.0 Act. If a physician certifies that you’re expected to die within 84 months, distributions taken on or after the certification date are exempt from the penalty.⁷ You must already be eligible for a distribution under the plan’s terms. The diagnosis doesn’t override the plan’s distribution rules, only the penalty. Amounts taken under this exception can be repaid to an IRA within three years if your health improves.

Qualified Domestic Relations Orders

When a divorce settlement divides 401(k) assets through a Qualified Domestic Relations Order, the distribution to the ex-spouse or dependent is exempt from the 10% penalty.⁸ The recipient still owes ordinary income tax on what they receive.

Medical Expenses Over 7.5% of AGI

If you have unreimbursed medical expenses exceeding 7.5% of your adjusted gross income for the year, you can withdraw up to the amount of those excess expenses penalty-free.⁵ Only the portion above the 7.5% threshold qualifies. If your AGI is $80,000, the first $6,000 in medical expenses doesn’t count.

Birth or Adoption

You can withdraw up to $5,000 per child within one year of a birth or finalized legal adoption without the 10% penalty.⁷ Both parents can each take $5,000 from their own accounts for the same child. An adopted child must be under 18 or physically or mentally unable to support themselves.

Substantially Equal Periodic Payments

This exception lets you tap a 401(k) at any age by committing to a fixed schedule of withdrawals based on your life expectancy. The IRS approves three calculation methods: a required minimum distribution method, a fixed amortization method, and a fixed annuitization method.¹ Once you start, you cannot change the payment amount or take additional withdrawals from that account until the later of five years or reaching age 59½. Modify the schedule early and the IRS retroactively applies the 10% penalty to every distribution you took, plus interest. For 401(k) plans, you must have already separated from the employer maintaining the plan before payments can begin.

SECURE 2.0 Additions

Recent legislation added several new penalty exceptions for distributions taken after December 31, 2023:

Emergency personal expenses: one distribution per year, up to $1,000, for unforeseeable personal or family emergencies, repayable within three years.⁵
Domestic abuse victims: up to the lesser of $10,000 (indexed for inflation) or 50% of the account balance, taken within one year of the abuse, repayable within three years.
Federally declared disasters: up to $22,000 per disaster for individuals who suffered an economic loss in the disaster area, with a three-year repayment window.⁹

Your plan must actually adopt these optional provisions for them to be available. Not every 401(k) plan has updated its terms, so check with your plan administrator before assuming you qualify.

Other Exceptions

The penalty also doesn’t apply to distributions made after the account holder’s death (paid to beneficiaries), distributions resulting from an IRS levy against the account, or certain distributions to qualified military reservists called to active duty for at least 180 days.⁵

A Hardship Withdrawal Does Not Waive the Penalty

This is where people get tripped up. A hardship withdrawal and a penalty exception are two different things. Your plan may allow you to take money out for a qualifying hardship, but that doesn’t mean the IRS waives the 10% penalty.

The IRS recognizes six categories of “safe harbor” expenses that qualify as an immediate and heavy financial need for hardship distribution purposes: medical care for you or your family; costs to buy a principal residence (not mortgage payments); tuition, fees, and room and board for the next 12 months of postsecondary education; payments needed to prevent eviction or foreclosure on your principal residence; funeral expenses; and certain expenses to repair casualty damage to your principal residence.¹⁰

Qualifying for one of these categories gets the money out of the plan. But unless the distribution also fits one of the penalty exceptions listed above, you still owe the 10% on top of ordinary income tax. Someone who takes a hardship withdrawal for tuition, for example, owes the full penalty because the higher-education exception applies only to IRAs, not to 401(k) plans.

Roth 401(k) Withdrawals Work Differently

Roth 401(k) contributions are made with after-tax dollars, so the rules on the way out differ from a traditional 401(k). Both contributions and earnings come out completely tax-free and penalty-free in a qualified distribution.¹¹ A distribution qualifies only when the account has been open for at least five years from your first Roth contribution and you’re either at least 59½, disabled, or the distribution goes to a beneficiary after your death.¹²

Non-qualified distributions are where the Roth 401(k) works differently than most people expect. Unlike a Roth IRA, where you can withdraw contributions first and leave earnings untouched, a Roth 401(k) uses a pro-rata rule. Every distribution is treated as a proportional mix of contributions and earnings. If your account is 85% contributions and 15% earnings, then 15% of any withdrawal is considered earnings, subject to income tax and potentially the 10% penalty. You can’t cherry-pick the tax-free portion first.

One workaround: roll the Roth 401(k) into a Roth IRA before taking money out. Once inside a Roth IRA, contributions come out first, then conversions, then earnings last. That ordering matters if you need the money before 59½.

A 401(k) Loan Instead of a Withdrawal

If your plan allows it, borrowing from your 401(k) avoids the tax hit entirely, as long as you repay on schedule. You can borrow up to the lesser of 50% of your vested balance or $50,000.¹³ If 50% of your vested balance is less than $10,000, some plans let you borrow up to $10,000. The standard repayment period is five years with at least quarterly payments, though loans used to buy a primary residence can stretch longer.

Because you’re repaying yourself with interest, a 401(k) loan doesn’t trigger income tax or the 10% penalty. No withholding is taken, and no 1099-R is issued as long as you stay on the repayment schedule. For someone who genuinely needs short-term cash and can commit to paying it back, a loan is dramatically cheaper than an early withdrawal.

The risk shows up if you leave your job with a loan balance outstanding. The remaining balance typically must be repaid within a short window after separation, often 90 days or by the end of the quarter following departure, depending on plan terms. If you can’t repay, the outstanding balance is treated as a taxable distribution, and if you’re under 59½, the 10% penalty applies to the unpaid amount. There’s one safety valve: if the loan was in good standing when you left, the resulting offset qualifies as a “qualified plan loan offset,” and you have until your tax filing deadline (including extensions) to roll that amount into an IRA and avoid the tax consequences.¹⁴

1
Internal Revenue Service. Substantially Equal Periodic Payments
2
Internal Revenue Service. Instructions for Form 5329
3
Internal Revenue Service. Instructions for Forms 1099-R and 5498 – Section: Box 4 Federal Income Tax Withheld
4
Internal Revenue Service. About Form 1099-R, Distributions From Pensions, Annuities, Retirement or Profit-Sharing Plans, IRAs, Insurance Contracts, etc.
5
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
6
Internal Revenue Service. Retirement Topics – Significant Ages for Retirement Plan Participants
7
Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts
8
Internal Revenue Service. Topic No. 558, Additional Tax on Early Distributions From Retirement Plans Other Than IRAs
9
Internal Revenue Service. Retirement Plans and IRAs Under the SECURE 2.0 Act of 2022
10
Internal Revenue Service. Retirement Topics – Hardship Distributions
11
Internal Revenue Service. Roth Account in Your Retirement Plan
12
Internal Revenue Service. Roth Comparison Chart
13
Internal Revenue Service. Retirement Topics – Loans
14
Internal Revenue Service. Plan Loan Offsets