Are Taxes Automatically Taken Out of 401k Withdrawals?

Yes — in most cases, taxes are automatically taken out of 401k withdrawals before the money reaches you, but how much depends entirely on the type of distribution. A lump-sum cash-out from a traditional 401k has a flat 20% federal withholding you cannot reduce. Required minimum distributions, hardship withdrawals, and other one-time payments that can’t be rolled over default to 10%, and you can raise, lower, or eliminate that number. Installment payments are withheld like a paycheck. And if you move the money directly into another retirement account, nothing is withheld at all.

The 20% Rule on Lump-Sum Cash-Outs

When you request a traditional 401k distribution paid directly to you as a lump sum — or any other payment that could have been rolled into another retirement account — federal law requires the plan administrator to withhold 20% for income taxes before sending you the check.¹ You cannot reduce this rate or opt out. Request $10,000, and you receive $8,000; the other $2,000 goes to the IRS as a prepayment against your tax bill for the year.

You can ask the administrator to withhold more than 20% by filing Form W-4R, but you cannot go lower.²

Why 20% May Not Cover What You Owe

The 20% withheld is a down payment, not a final settlement. If your total income for the year lands you in the 24% or 32% bracket, you owe the difference when you file. If 20% turns out to be more than you owe, you get a refund.

Two situations commonly leave people short at tax time. First, if your marginal rate is higher than 20%, the withholding doesn’t cover the actual income tax on the distribution. Second, if you’re under 59½, a 10% additional tax generally applies on top of regular income tax.³ Administrators don’t automatically deduct this penalty, though many let you increase withholding on the distribution form to account for it. On a $10,000 early withdrawal, you could owe $1,000 in penalty plus ordinary income tax at your bracket — well beyond the $2,000 that was withheld.

Certain early withdrawals qualify for an exception to the 10% penalty (leaving your job at 55 or older, disability, death benefits, medical costs above 7.5% of AGI, qualified domestic relations orders, and others).⁴ The distribution is still taxed as ordinary income; only the extra 10% is waived. A hardship withdrawal does not automatically avoid the penalty — hardship status only allows the plan to release the money.⁵

Distributions That Use the 10% Default Rate

Not every 401k withdrawal falls under the mandatory 20%. Payments that aren’t eligible to be rolled over follow different rules with lower defaults and more flexibility.⁶

Hardship Withdrawals and Required Minimum Distributions

One-time distributions that can’t be rolled over — including hardship withdrawals and required minimum distributions — default to 10% federal withholding.¹ Unlike the mandatory 20% on eligible rollover distributions, you can change this. Filing Form W-4R lets you set the withholding at any rate from 0% to 100%.² Do nothing, and the plan withholds 10% automatically. Many retirees who owe little or no tax choose 0%; others increase withholding to avoid a bill in April.

RMDs begin at age 73 under current law, rising to 75 starting in 2033.⁷ Missing one carries a 25% excise tax on the shortfall, dropping to 10% if you correct it within two years.⁸

Installment Payments

If you take your 401k as recurring payments — monthly or quarterly, for example — the plan withholds federal tax the same way an employer withholds from a paycheck.⁶ The amount depends on what you report on Form W-4P: filing status, other income, and any adjustments. You can also elect to have no federal tax withheld on periodic payments.

How to Avoid Withholding Entirely

If you’re moving retirement funds from one account to another — from a former employer’s 401k into an IRA, say, or into your new employer’s plan — a direct rollover skips the 20% withholding altogether.⁹ The administrator sends the money straight to the receiving account. Because the funds stay inside a tax-advantaged plan, there’s nothing to withhold.

A check made payable to the new plan (not to you personally) also counts as a direct rollover and avoids the mandatory cut.⁹ Confirm the payee line before the check is issued. A check payable to you triggers the 20% withholding automatically.

The Indirect Rollover Trap

If you take a distribution as cash and then try to roll it into an IRA within 60 days, there’s a catch. The administrator already withheld 20%, so you only have 80% in hand. To complete a full rollover with no taxable income, you must deposit the entire original amount — including the withheld 20% — using other funds to make up the shortfall.⁹

Say you cash out $10,000 and receive $8,000 after withholding. You would need to come up with $2,000 from savings and deposit all $10,000 into the IRA within 60 days. Deposit only the $8,000 you received, and the IRS treats the missing $2,000 as taxable income. If you’re under 59½, that $2,000 may also trigger the 10% early withdrawal penalty. You eventually recover the withheld $2,000 as a credit when you file, but not before.

State Income Tax Is Separate

Federal withholding is only part of the picture. Most states with an income tax also withhold from 401k distributions, and the rules vary widely. Roughly a dozen states require mandatory state withholding you cannot waive whenever federal taxes are withheld, with rates ranging from about 3% to 8%. Other states let you opt out or adjust the rate. States with no income tax — Texas, Florida, and Nevada among them — withhold nothing at the state level. Check with your plan administrator or your state’s tax agency for the requirements where you live.

Reconciling Withholding at Tax Time

Early the year after your distribution, the plan administrator sends you Form 1099-R. It reports the gross distribution, the taxable portion, and the federal tax that was withheld.¹⁰ A code in Box 7 tells the IRS (and you) whether the distribution was a normal withdrawal, an early distribution with or without a known exception, or a death benefit. You report the taxable amount on your return and claim credit for whatever was withheld.

If the withholding fell short of what you owe — common when the flat 20% doesn’t match your bracket, or when the 10% early withdrawal penalty applies — you pay the difference at filing. If too much was withheld, you get a refund. To reduce surprises, review the withholding election on your distribution paperwork before submitting it. For eligible rollover distributions, you can increase (but not decrease) the 20% rate with Form W-4R. For other distribution types, Form W-4R or Form W-4P lets you fine-tune the number to fit your tax situation.²

1
Office of the Law Revision Counsel. 26 USC 3405 – Special Rules for Pensions, Annuities, and Certain Other Deferred Income
2
Internal Revenue Service. Form W-4R, Withholding Certificate for Nonperiodic Payments and Eligible Rollover Distributions
3
Internal Revenue Service. Topic No. 558, Additional Tax on Early Distributions From Retirement Plans Other Than IRAs
4
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
5
Internal Revenue Service. 401(k) Resource Guide – Plan Participants – General Distribution Rules
6
Internal Revenue Service. Pensions and Annuity Withholding
7
Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs)
8
Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs
9
Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
10
Internal Revenue Service. Instructions for Forms 1099-R and 5498