Calcufast

401(k) early withdrawal tax: $10,000 at 45 → $1,000

IRS Topic 558: 10% additional tax if you take a 401(k) distribution before age 59½. Ordinary income tax is separate.

The figures in the title are an example. Change the inputs to see your result.

Advertisement
Inputs
Enter values to calculate
Results

Enter amount and age.

Advertisement

You might also like

401(k) withdrawal tax 2026: $25,000 → $17,000 net

See what you keep when you take money out of a 401(k): 2026 federal brackets, the 10% additional tax before 59½, the mandatory 20% withholding and your state.

401(k) rollover withholding: $50,000 → $10,000 (20%)

IRC 3405(c) 20% mandatory withholding when an eligible rollover is paid to you. Direct rollover withholds $0.

401(k) 2026: $10,000 YTD → $14,500 left

IRS 2026 elective deferral $24,500 + catch-up 50+ $8,000 or ages 60–63 $11,250. Example: $10,000 YTD at age 40 leaves $14,500.

More United States calculators (paycheck, FICA, overtime and withholding).

401(k) early distribution 10% tax: $10,000 → $1,000

IRC §72(t) / IRS Topic 558: a 10% additional tax usually applies to taxable 401(k) distributions taken before age 59½. It is on top of ordinary federal income tax (and state tax, if any). This page only estimates that 10%; it does not compute ordinary brackets or state tax.

Read the evergreen explainer →

Additional tax §72(t)

if age < 59.5 → additional tax = distribution × 10% if age ≥ 59.5 → additional tax = $0 net after penalty (excluding ordinary tax) = distribution − additional tax

Worked example: $10,000 at age 45

Taxable distribution $10,000 at age 45:

  • 10% additional tax: $1,000.00
  • Net after only that penalty: $9,000.00
  • Same amount at 59.5 or older: additional $0.00
DistributionAgeEarly?10% taxNet after 10%
$5,00040Yes$500.00$4,500.00
$10,00045Yes$1,000.00$9,000.00
$25,00050Yes$2,500.00$22,500.00
$50,00040Yes$5,000.00$45,000.00
$10,00059.5No$0.00$10,000.00

Hero breakdown: $10,000 at 45

ItemBase / rateAmount
Taxable distributionPlan amount$10,000.00
Age at withdrawal45 < 59.5Early
§72(t) additional tax10% × $10,000$1,000.00
Net after 10% only10,000 − 1,000$9,000.00

In scope vs out of scope

ItemIn this calculator?Note
10% additional before 59½YesTopic 558 / IRC 72(t)
$0 at 59½ or olderYesEngine age threshold
Ordinary federal income taxNoSeparate; depends on your bracket
Exceptions (rule of 55, SEPP, hardship, etc.)NoOut of v1
20% rollover withholding when paid to youNoSee rollover withholding calculator

Related: 401(k) withdrawal tax and net, 401(k) deferral limit, rollover withholding, 401(k) loan, paycheck take-home.

Not tax advice

Code exceptions (separation at 55, substantially equal payments, qualified birth/adoption, etc.) are not modeled. The 10% does not replace ordinary income tax.

Official sources

No. It is additional. For $10,000 at age 45 this page estimates $1,000 of the 10%; ordinary federal income tax still applies separately.

At 59.5 or older the engine estimates $0 of the 10% additional tax on the same distribution.

Yes in the IRC (rule of 55, SEPP, qualified hardship, etc.). Not modeled here: if you qualify, the real result may be $0 even under 59½.