401(k) Early Withdrawal Calculator
See exactly what a 401(k) withdrawal costs you. Enter the amount and your tax details to break down the 10% penalty, federal income tax by bracket, and state tax — and the net amount you actually keep. No signup, runs entirely in your browser.
Heads up on withholding: your plan administrator will usually withhold 20% of the distribution for federal tax up front — about $10,000 here. That is a prepayment sent to the IRS, not your final bill. Your actual tax is settled when you file, so you may owe more (the penalty is often not withheld) or get some back.
How the 401(k) Early Withdrawal Calculator Works
- 1Enter the amount you want to withdraw from your traditional 401(k).
- 2Set whether you are under age 59½ — this decides if the 10% penalty applies — and tick the box if a penalty exception applies.
- 3Choose your filing status and enter your other taxable income so the tool can find your true marginal federal bracket.
- 4Add your state tax rate, then read the penalty, federal and state tax, and the net amount you keep.
Worked Example: Cashing Out $50,000 at Age 40
Suppose you are 40, single, earn $60,000 of other taxable income, live in a state with a 5% income tax, and withdraw $50,000 from a traditional 401(k). First the penalty: because you are under 59½, you owe 10% × $50,000 = $5,000. Next federal tax: your other income of $60,000 already reaches into the 22% bracket, and stacking $50,000 on top pushes the withdrawal through the 22% and into the 24% bracket, producing roughly $11,200in incremental federal tax. State tax adds 5% × $50,000 = $2,500.
Add it up: $5,000 + $11,200 + $2,500 = about $18,700 in combined penalty and tax, leaving roughly $31,300 — you keep only about 63 cents on the dollar. This is why cashing out early is so costly: the penalty and tax stack, and a large withdrawal can push part of itself into a higher bracket than your salary alone would reach. The calculator also flags that your plan will withhold 20% ($10,000) up front — but as the example shows, the true cost here exceeds that withholding, so you would still owe more at tax time.
Before You Withdraw
Consider a 401(k) loan first
If your plan allows it and you can repay, a loan avoids both the tax and the penalty because you are borrowing your own money. Just be aware the balance can come due quickly if you leave your job.
Check the rule of 55
If you leave your employer in or after the year you turn 55, withdrawals from that employer's 401(k) skip the 10% penalty. Tick the exception box to model it — income tax still applies.
Mind the bracket bump
A large withdrawal stacks on your income and can push part of it into a higher bracket. Spreading withdrawals across two tax years can sometimes keep more of it in a lower bracket.
The 20% withheld is not the bill
Your administrator withholds 20% federally up front, but that is a prepayment. With the penalty and your real bracket, you often owe more — set aside extra so tax time is not a shock.
Roth 401(k) is different
Qualified Roth withdrawals of contributions are not taxed the same way. This tool models a traditional, pre-tax 401(k); Roth rules on earnings and the five-year clock differ.
Weigh the lost growth
The biggest cost is not on this page: money withdrawn stops compounding. $50,000 left invested for 20 years at 7% would grow to nearly $193,000 — the real price of an early withdrawal.
Frequently Asked Questions
How much do you lose on an early 401(k) withdrawal?
For a withdrawal before age 59½, you generally lose a 10% federal early-withdrawal penalty plus ordinary federal income tax at your marginal rate, plus any state income tax. For many middle-income workers the combined hit lands between 25% and 40% of the amount withdrawn. This calculator adds all three together so you can see the exact net amount you would keep from any withdrawal.
How is the federal tax on a 401(k) withdrawal calculated?
A traditional 401(k) withdrawal is taxed as ordinary income. It stacks on top of your other income for the year, so it can be taxed across several brackets. This tool takes your other taxable income and filing status, adds the withdrawal, and computes the incremental federal tax using the 2025 brackets — which is more accurate than applying a single flat rate, because a large withdrawal can push part of itself into a higher bracket.
What is the 10% early withdrawal penalty?
The IRS charges an additional 10% tax on most retirement-account withdrawals taken before age 59½, on top of ordinary income tax. It exists to discourage people from draining retirement savings early. The penalty applies to the taxable amount withdrawn. Set the age toggle to "No (59½+)" and the calculator removes it, since the penalty no longer applies once you reach 59½.
Are there exceptions to the 10% penalty?
Yes. Common exceptions include separation from service in or after the year you turn 55 (the "rule of 55"), total and permanent disability, certain unreimbursed medical expenses, an IRS levy, qualified birth or adoption expenses, and substantially equal periodic payments (72(t)). If one of these applies, tick the exception box — the ordinary income tax still applies, but the 10% penalty is waived.
Why does my plan withhold 20% but I might still owe more?
Plan administrators are required to withhold 20% of most 401(k) distributions for federal tax up front. That 20% is a prepayment, not your final bill. If your marginal rate is above 20%, or the 10% penalty applies (penalty is usually not withheld), you will owe the difference at tax time. If your rate is lower, you may get a refund. The calculator shows this withholding separately so the distinction is clear.
Is a 401(k) loan better than a withdrawal?
Often, yes, if your plan allows it and you can repay. A 401(k) loan is not taxed and carries no penalty as long as you repay it on schedule, because you are borrowing your own money and paying yourself back with interest. The risk is that if you leave your job, the loan may be due quickly, and an unpaid balance is then treated as a taxable, potentially penalized distribution. Compare both before cashing out.
Does this calculator give tax advice?
No. It is an educational estimate using the 2025 federal brackets and a flat state rate you enter. Real situations involve details it cannot capture — state-specific retirement rules, the exact treatment of exceptions, Roth versus traditional contributions, and how the withdrawal interacts with credits and phase-outs. Treat the result as a close estimate and confirm with a tax professional before acting.