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401(k) Early Withdrawal Calculator

Before you pull money from your 401(k), see exactly what you'll keep. Enter your withdrawal amount, age, and income to see the 10% penalty, marginal federal tax, state tax, and the long-term opportunity cost.

Where this fits

๐Ÿ“ˆ Investing & WealthRetirement Plan

This tool lives inside Retirement Plan and is most useful for people making this kind of decision.

401(k) Limit 2024$23,000
Roth IRA Limit$7,000
S&P 500 Avg Return~10%/yr

10% early withdrawal penalty applies

You are 42 years old. The IRS imposes a 10% penalty on withdrawals before age 59ยฝ in addition to ordinary income tax. That's $2,000 gone before federal or state taxes.

Withdrawal Details

$
$
%

Net Received

$12,600

Out of $20,000 withdrawn

10% Penalty

$2,000

Age < 59ยฝ

Federal Income Tax

$4,400

22% marginal bracket

State Tax

$1,000

5.0% rate

Total Deductions

$7,400

37.0% effective rate

Opportunity Cost

$75K

7% growth over 23 yrs

Withdrawal Breakdown

Withdrawal amount$20,000
10% early penalty โˆ’ $2,000
Federal income taxโˆ’ $4,400
State income tax (5.0%)โˆ’ $1,000
Net received$12,600

At 7% annual growth, $20,000 left invested would grow to $95K in 23 years โ€” you forfeit $75K in future value.

1

Step 1 โ€” 10% Early Withdrawal Penalty

penalty = withdrawalAmount ร— 10%

$20,000 ร— 10% = $2,000

= $2,000

Applies because age 42 < 59ยฝ. IRC ยง 72(t).

2

Step 2 โ€” Marginal Federal Income Tax on Withdrawal

federalTax = tax(existingIncome + withdrawal) โˆ’ tax(existingIncome)

tax($65,000 + $20,000) โˆ’ tax($65,000)

= $4,400

Withdrawal is stacked on top of existing $65,000 income and taxed at the marginal 22% bracket. 2024 single-filer brackets.

3

Step 3 โ€” State Income Tax

stateTax = withdrawalAmount ร— stateRate

$20,000 ร— 5.0% = $1,000

= $1,000

State tax rate: 5.0%. Some states (TX, FL, WA, etc.) have 0% state income tax.

4

Step 4 โ€” Net Amount Received

netReceived = withdrawal โˆ’ penalty โˆ’ federalTax โˆ’ stateTax

$20,000 โˆ’ $2,000 โˆ’ $4,400 โˆ’ $1,000

= $12,600

Effective total loss rate: 37.0% of your withdrawal goes to taxes and penalties. Opportunity cost at 7% over 23 yrs: $75K.

Key insight

Of your $20,000 withdrawal, you keep only $12,600 (63.0%). The other 37.0% โ€” $7,400 โ€” goes to the IRS and your state. Plus the compounding you give up adds another $75K in lost future growth.

Use this result in โ†’

401(k) Optimizer โ†’Roth vs Traditional โ†’Retirement Readiness โ†’

#ShowYourWork

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