The tax you owe on a 401(k) withdrawal depends on your age, how long the money has been in the account, and whether you contributed pre-tax or after-tax dollars
A 401(k) withdrawal is taxed as ordinary income in the year you take it out. The exact amount you owe depends on three things: whether your contributions were made before or after taxes, your current tax bracket, and whether you took the money out before age 59½. If you withdraw before 59½ and don't meet a narrow set of exceptions, you also owe a 10 percent early withdrawal penalty on top of the income tax.
The IRS does not tax all 401(k) money the same way. Money you contributed with pre-tax dollars (the most common type) gets taxed as income when you withdraw it. Money you contributed after taxes (called Roth contributions, if your plan offers them) comes out tax-free, though the earnings on that money are taxed. Your employer will withhold taxes from the check, but that withholding is an estimate — you may owe more or less when you file your return.
Key Takeaways
- Pre-tax 401(k) withdrawals are taxed as ordinary income at your current tax rate, and your employer withholds a percentage upfront.
- Withdrawals before age 59½ trigger a 10 percent early withdrawal penalty unless you meet an exception like disability, medical hardship, or a SEPP arrangement.
- After-tax or Roth 401(k) contributions come out tax-free, but the earnings on that money are taxed as ordinary income.
- Your withholding is not your final tax bill — you settle the actual amount owed when you file your tax return.
How withholding works when you take money out
When you request a 401(k) withdrawal, your plan administrator withholds a percentage of the amount for federal income tax. The withholding rate depends on whether you are taking a lump sum or rolling the money into another account. For a direct withdrawal (money paid to you), the plan must withhold at least 20 percent of the taxable portion if you do not roll it over to an IRA or another 401(k) within 60 days.
Withholding is not the same as your actual tax bill. If you withhold $10,000 from a $50,000 withdrawal, you have paid $10,000 toward your taxes, but you may owe more or less depending on your total income for the year and your tax bracket. When you file your return, the IRS compares what you withheld to what you actually owe. If you withheld too much, you get a refund. If you withheld too little, you owe the difference.
The 10 percent early withdrawal penalty and when you avoid it
If you withdraw from your 401(k) before you turn 59½, the IRS charges a 10 percent penalty on the amount withdrawn, in addition to income tax. A $20,000 withdrawal before 59½ costs you $2,000 in penalty alone, plus whatever income tax you owe on the full $20,000.
The penalty does not explore if you meet one of these narrow exceptions: you are disabled, you are withdrawing to pay unreimbursed medical expenses that exceed 7.5 percent of your adjusted gross income, you are a may have access to military reservist called to active duty, or you set up a Substantially Equal Periodic Payment (SEPP) plan. A SEPP lets you withdraw a fixed amount each year without penalty, calculated using IRS formulas. You must follow the SEPP schedule for at least five years or until you turn 59½, whichever is longer. Breaking the schedule triggers penalties on all prior withdrawals.
Some plans also allow hardship withdrawals for when ready and heavy financial need — such as preventing eviction or paying for medical care — but these still trigger the 10 percent penalty unless you meet an exception. Hardship withdrawals are not a penalty-free route; they are straightforward a way to access the money before 59½ if your plan permits it.
Pre-tax versus after-tax contributions and how each is taxed
Most 401(k) contributions are made with pre-tax dollars, meaning you deduct them from your income before calculating your federal income tax. When you withdraw pre-tax money, the entire amount is taxed as ordinary income at your current tax rate. If you are in the 22 percent tax bracket and withdraw $10,000 in pre-tax contributions, you owe roughly $2,200 in federal income tax (plus state tax if your state has income tax, plus the 10 percent penalty if you are under 59½).
Some employers offer a Roth 401(k) option, where you contribute after-tax dollars. The contributions themselves come out tax-free when you withdraw them. However, the earnings on those contributions are taxed as ordinary income when withdrawn. If you contributed $10,000 after-tax and it grew to $15,000, you withdraw the $10,000 contribution tax-free but owe income tax on the $5,000 in earnings. The 10 percent early withdrawal penalty applies only to the earnings portion if you withdraw before 59½.
If your plan allows both pre-tax and after-tax contributions and you withdraw a lump sum, the IRS treats the withdrawal as coming proportionally from both buckets. You cannot choose to withdraw only the after-tax portion to avoid taxes. Your plan statement will show how much of your balance is pre-tax and how much is after-tax.
State and local income tax on 401(k) withdrawals
Federal income tax is not the only tax on a 401(k) withdrawal. Most states with income tax also tax 401(k) withdrawals as ordinary income. Your employer's withholding typically covers only federal tax, so you may owe state tax on top of what was withheld. Some states, such as Illinois and Pennsylvania, do not tax retirement income, including 401(k) withdrawals. Others, such as California and New York, tax the full amount.
When you request a withdrawal, ask your plan administrator whether they will withhold state tax. Many plans do not withhold state tax automatically, which means you may owe it when you file your state return. If you are moving to a different state after a withdrawal, check that state's rules — some states tax withdrawals differently depending on when you took the money out or whether you were a resident when you contributed.
Rolling over a 401(k) to avoid when ready taxes
If you leave your job or retire, you can move your 401(k) balance to an Individual Retirement Account (IRA) or to a new employer's 401(k) plan without paying taxes or penalties. This is called a rollover. A direct rollover, where the money moves straight from your old plan to the new account, avoids withholding entirely. An indirect rollover, where you receive a check and deposit it yourself within 60 days, triggers 20 percent withholding even though you are not actually withdrawing the money.
A rollover does not reduce the taxes you will eventually owe — it straightforward delays them. The money remains in a tax-deferred account and is taxed when you withdraw it later. However, rolling over lets you consolidate accounts, potentially lower your fees, and avoid the when ready tax hit of a withdrawal. If you miss the 60-day important date on an indirect rollover, the IRS treats it as a withdrawal, and you owe income tax and the 10 percent penalty if you are under 59½.
Required Minimum Distributions and mandatory withdrawals at age 73
Starting at age 73, the IRS requires you to withdraw a minimum amount from your 401(k) each year, called a Required Minimum Distribution (RMD). The amount is calculated using your age and your account balance. You owe income tax on the full RMD, and if you do not take it, you face a 25 percent penalty on the amount you failed to withdraw (reduced to 10 percent if you correct it within two years).
RMDs are taxed as ordinary income, and your plan will withhold taxes from the distribution. If you do not need the money, you cannot straightforward leave it in the account to avoid taxes. However, if you are still working and do not own more than 5 percent of the company, you may be able to delay RMDs from your current employer's plan until you retire. This exception does not explore to IRAs or to plans from former employers.
Frequently Asked Questions
Can I withdraw from my 401(k) without paying the 10 percent penalty?
Yes, if you are 59½ or older, or if you meet a narrow exception such as disability, medical hardship, or a Substantially Equal Periodic Payment plan. Some plans also allow hardship withdrawals, but these still trigger the penalty unless you meet an exception. Check with your plan administrator about which exceptions explore to your situation.
What happens if I do not have enough withheld for taxes?
You will owe the difference when you file your tax return. The withholding your employer takes out is an estimate. If it is too low, you can either pay the balance when you file or adjust your withholding on future paychecks if you are still working. If you owe a large amount, you may be able to make quarterly estimated tax payments to avoid penalties.
Is a Roth 401(k) withdrawal taxed differently?
Roth contributions come out tax-free, but earnings on those contributions are taxed as ordinary income when withdrawn. If you withdraw before 59½, the 10 percent penalty applies only to the earnings portion, not the contributions. You must have held the account for at least five years for the earnings to may have access to for favorable tax treatment.
Do I owe taxes on a 401(k) rollover to an IRA?
No, a direct rollover is not a taxable event. The money moves directly from your 401(k) to the IRA without withholding or taxes. An indirect rollover, where you receive the check yourself, triggers 20 percent withholding, but if you deposit the full amount within 60 days, you are not taxed on the rollover itself — only on future withdrawals.
How much state tax will I owe on a 401(k) withdrawal?
It depends on your state. Some states, like Illinois and Pennsylvania, do not tax retirement withdrawals. Others tax them as ordinary income. Your employer typically withholds only federal tax, so you may owe state tax when you file your state return. Contact your state tax authority or ask your plan administrator about your state's rules.