401(k) Early Withdrawal Calculator
Estimate how much you actually keep after taking an early 401(k) withdrawal — the 10% penalty, federal income tax, state tax, and lost long-term growth.
What is 401(k) Early Withdrawal Calculator?
An early 401(k) withdrawal (before age 59½) costs more than just the 10% IRS penalty. Federal and state taxes apply on the full amount, and the money permanently leaves your retirement account — losing decades of compound growth.
This calculator shows what you actually take home, plus the often-larger "true cost" of forgone retirement growth.
Formula
Penalty: 10% of the withdrawal amount (only if under age 59½, with some exceptions).
Federal tax: withdrawal × your marginal bracket. The withdrawal is added to your taxable income.
State tax: withdrawal × state rate.
Lost growth: A × (1 + r)years − A, where r is the annual growth and years is until your retirement age.
Worked example
$30,000 withdrawal at age 45, retirement at 65, 22% federal, 5% state, 7% growth:
- 10% penalty: $3,000
- Federal tax: $6,600
- State tax: $1,500
- Net cash: $18,900
- Lost growth at retirement: $86,098
- True cost: $116,198 for $18,900 in your hand today
How to use this calculator
- Enter the amount you're considering withdrawing.
- Add your age and target retirement age.
- Pick your federal tax bracket (single-filer 2024 brackets shown).
- Add your state tax rate (0% for FL, TX, NV, WY, SD, TN, NH, AK, WA).
- Estimate your portfolio's growth rate (long-term S&P 500 averages ~10% nominal, ~7% real).
Frequently asked questions
Are there exceptions to the 10% penalty?
Yes. The penalty is waived for: medical expenses over 7.5% of AGI, total disability, separation from service after age 55 (the "Rule of 55"), Substantially Equal Periodic Payments (SEPP / Rule 72(t)), first-home purchase up to $10,000, qualified higher education expenses, birth or adoption ($5,000), domestic abuse ($10,000 under SECURE 2.0). Federal and state income tax still apply.
Should I use a 401(k) loan instead?
Often yes. A 401(k) loan lets you borrow up to 50% of vested balance (max $50,000) without penalty or taxes if repaid on schedule. You pay interest back to yourself. Risk: if you leave the job, the loan typically becomes due in 60-90 days or is treated as a withdrawal.
Does the calculator account for the withdrawal pushing me into a higher bracket?
Partially — picking the bracket assumes the entire withdrawal is taxed at that marginal rate. A large withdrawal can push part of it into a higher bracket. For precision, run the calculation in halves at adjacent brackets, or consult a tax professional.
What about Roth 401(k) withdrawals?
Different rules. Roth 401(k) contributions can be withdrawn tax- and penalty-free anytime. Earnings are subject to penalty + tax if withdrawn before age 59½ AND before the account is 5 years old. This calculator models traditional pre-tax 401(k) withdrawals.
Is there a penalty for hardship withdrawals?
Yes. "Hardship" allows access to funds for specific emergencies (medical, foreclosure, funeral, etc.) but the 10% penalty still applies if you're under 59½ unless you qualify for one of the IRS exceptions above.