The Real Cost of Cashing Out a 401(k) Early

Taking money out of a 401(k) before 59½ costs more than the 10% penalty most people know about. The withdrawal is also taxed as income on top of your salary, and the check you receive is not the end of it: the plan withholds 20%, which may not cover what you owe.

The Three Costs

• 10% additional tax. Applies to the taxable amount if you are under 59½ and no exception applies.
• Federal income tax. The withdrawal is added to your other income, so it is taxed at your top bracket, or higher if it pushes you into the next one.
• State income tax. Most states tax it too.

Why the Check Is $8,000, Not $6,300

When a plan pays you a distribution that could have been rolled over, it must withhold 20% for federal income tax. So the check is $8,000. That $2,000 is only a prepayment. When you file, your actual federal tax ($2,200) plus the penalty ($1,000) is $3,200, so you still owe $1,200, plus $500 to your state. People who spend the whole $8,000 are often surprised in April.

A hardship withdrawal while you are still working works a little differently. It can’t be rolled over, so the plan withholds 10% by default instead of 20%, and you can ask for no withholding. That makes the April bill larger, not smaller.

Needing a Set Amount

If you need $10,000 in hand, you have to take out more, because the extra is taxed and penalized too. In this example every extra dollar loses 37 cents (22% federal, 10% penalty, 5% state), so it takes $10,000 ÷ 0.63, about $15,873. A bigger withdrawal can push part of it into the next bracket, so the gross-up grows faster than that.

The Cost Nobody Sees: Lost Growth

$10,000 left in the account at a 6% return would grow to about $42,919 in 25 years. Taking it out at 40 doesn’t just cost $3,700 now. It costs what that money would have been at retirement.

Ways to Avoid the Penalty

• The rule of 55. Leave your job in or after the year you turn 55 (50 for some public safety workers), and withdrawals from that employer’s plan skip the 10%. It doesn’t cover IRAs or plans from earlier jobs, so rolling that 401(k) into an IRA before you withdraw would lose the exception.
• Other exceptions. Total and permanent disability, a series of substantially equal payments, a QDRO in a divorce, medical costs above 7.5% of income, and one emergency withdrawal of up to $1,000 a year, among others.
• A 401(k) loan instead. The law lets you borrow the lesser of $50,000 or half your vested balance (at least $10,000 if you have it), repaid within five years. With $60,000 vested, a $10,000 loan at 8% costs $93.45 every two weeks, with no tax or penalty if repaid on time. The catch: if you leave the job, the unpaid balance is usually due by your tax filing deadline, or it is taxed as a withdrawal.

What This Doesn't Cover

These examples treat the whole withdrawal as pre-tax money. Roth 401(k) contributions come out without tax, and only earnings can be taxed and penalized. The examples don’t include lost tax credits, effects on Social Security taxation, or state early-withdrawal penalties. Whether your plan allows hardship withdrawals or loans, and on what terms, is up to the plan. Before you take money out, talk to your plan administrator or a tax professional.

Sources: IRS exceptions to tax on early distributions, rollovers and 20% withholding, plan loan FAQs, and Publication 575 (withholding on distributions).