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401(k) Withdrawal Tax Calculator

See how much federal tax, 10% early withdrawal penalty and mandatory 20% withholding apply to a traditional 401(k) withdrawal.

Updated October 7, 2026

Withdrawal details

Estimated tax on this withdrawal

$2,750

You keep $17,250

Cost 13.8%

Withdrawal
$20,000
Added federal income tax
$2,750
10% early withdrawal penalty
$0
State tax
$0
Total tax and penalty
$2,750
Mandatory 20% federal withholding
$4,000
Federal refund from over-withholding
$1,250

Withdrawals from a traditional 401(k) are taxed as ordinary income. If you are under 59½, a 10% early withdrawal penalty usually applies on top. The calculator shows the extra tax your withdrawal adds to the year.

How 401(k) withdrawals are taxed

Ways to reduce the tax

Frequently asked questions

How much tax do I pay on a 401(k) withdrawal?+

It depends on your other income. The withdrawal is taxed at your ordinary bracket rates, and the calculator shows the added tax.

Is there a penalty for withdrawing from a 401(k) early?+

Yes, generally 10% before age 59½ on top of income tax, unless an exception applies.

Why does my plan withhold 20%?+

Federal rules require 20% withholding on eligible rollover distributions paid directly to you. You settle up when you file.

Are Required Minimum Distributions taxed?+

Yes, as ordinary income, but the 10% penalty does not apply.

Related tools and guides

Estimates for education only, not tax, legal or financial advice. Figures reflect IRS and SSA guidance as of October 7, 2026. Confirm with the IRS or a tax professional.