How to Fill Out Form W-4R: Rates, Safe Harbor, and Filing

To fill out Form W-4R, enter your Social Security number, name, and address on line 1, then enter a whole-number withholding percentage on line 2. For nonperiodic retirement payments you can choose any rate from 0% to 100%; for eligible rollover distributions the minimum is 20%. Sign and date the form and send it to your plan administrator, not to the IRS. If you leave line 2 blank, the payer withholds at the default rate — 10% for nonperiodic payments, 20% for eligible rollover distributions.¹

Which Distributions Use Form W-4R

Form W-4R covers two types of retirement payouts: nonperiodic payments and eligible rollover distributions. Nonperiodic payments are one-off or on-demand withdrawals — a lump-sum from a traditional IRA, a partial 401(k) cash-out, a required minimum distribution. RMDs are specifically excluded from the eligible rollover category, so the 10% default applies to them rather than 20%.¹

Eligible rollover distributions (ERDs) are payments from qualified plans like 401(k)s, 403(b)s, and governmental 457(b)s that qualify to be rolled into another retirement account.

Regular pension or annuity payments on a set schedule use a different form, Form W-4P.² Qualified Roth IRA distributions are generally not subject to mandatory federal withholding, so no W-4R is needed unless you affirmatively want tax withheld. Non-resident aliens use Form W-8BEN instead; the default rate for foreign persons is 30% under IRC Section 1441.³

Completing the Form Line by Line

The 2026 version of Form W-4R has just two lines plus a signature.

Line 1 is identification. Enter your Social Security number, full legal name, and current home address. This ties the withholding to your tax account. If you don’t provide an SSN, or the IRS notifies your payer that the SSN you gave is incorrect, the payer must withhold at 10% and cannot honor any request for a lower rate.¹

Line 2 is the withholding rate. Enter a whole number — no decimals. For nonperiodic payments, any rate from 0 through 100 is valid. For eligible rollover distributions, the minimum is 20; you can enter a higher number if you expect to owe more than 20% on the payment, but you cannot go below.⁴ Leaving line 2 blank triggers the default rate.

Sign and date the form at the bottom. There are no separate sections for different payment types and no checkbox to opt out of withholding. Withholding is controlled entirely through the percentage on line 2. Entering 0 (where allowed) means no federal tax is withheld and you receive the full gross amount.

Choosing the Right Rate

The biggest mistake on Form W-4R is guessing. The form includes marginal rate tables for 2026 that walk through a two-step calculation based on your total income and filing status.¹

First, find the rate that applies to your total income from all other sources — wages, Social Security, investment income — before adding the distribution. Second, add the distribution to that total and find the rate that applies to the combined amount. If both rates are the same, enter that rate on line 2.

If the distribution pushes you into a higher bracket, the two rates will differ. The form instructions give a formula: multiply the portion of the distribution taxed in the lower bracket by that bracket’s rate, multiply the portion in the higher bracket by that bracket’s rate, add the two, and divide by the total taxable amount of the distribution. That blended percentage is what goes on line 2.

For reference, here are the 2026 single-filer brackets from the form:

$0 to $16,100: 0%
$16,101 to $28,500: 10%
$28,501 to $66,500: 12%
$66,501 to $121,800: 22%
$121,801 to $217,875: 24%
$217,876 to $272,325: 32%
$272,326 to $656,700: 35%
Over $656,700: 37%

The form also carries tables for married filing jointly, married filing separately, qualifying surviving spouse, and head of household. All of these tables assume the tax on your other income is already covered by paycheck withholding or estimated payments. If it isn’t, choose a rate above what the table suggests to cover the gap.¹

When Zero Withholding Is Off the Table

The 0% option only exists for nonperiodic payments, and even there it has limits. If your payment will be delivered outside the United States and its territories, you generally cannot pick a rate below 10%.¹ Eligible rollover distributions carry a hard 20% floor set by statute; the only way to avoid withholding on an ERD is a direct rollover, where the plan transfers the funds straight to another IRA or plan trustee and the money never reaches you.⁵

Opting out on a nonperiodic payment makes sense if you’re already covering the tax through quarterly estimates, or if deductions and credits will offset what the distribution adds. Otherwise the underpayment penalty applies, calculated at the federal short-term rate plus three percentage points from each missed installment date until the tax is paid.⁶

Staying Inside a Safe Harbor

Whatever rate you pick, aim to have your total payments for the year hit one of the IRS safe harbors. You avoid the underpayment penalty if your return shows you owe less than $1,000, or if you’ve paid at least 90% of the current year’s tax or 100% of last year’s tax, whichever is smaller.⁷

Higher earners face a stricter version. If your prior-year adjusted gross income was over $150,000 ($75,000 if married filing separately), the prior-year safe harbor rises to 110% of last year’s tax. A large lump-sum distribution can push you past that threshold on its own, so run the numbers before settling on line 2.

Submitting the Form

Send the completed Form W-4R to your plan administrator or account custodian. It does not go to the IRS. The payer needs it before processing the distribution, so submit it early — some administrators require it at least three business days before the withdrawal date, though deadlines vary, and many accept it through an online portal.

You can submit a new W-4R for each distribution. If your tax picture shifts between payments, a revised form keeps withholding accurate. Form W-4R covers federal tax only; state income tax withholding on retirement distributions runs on separate rules and, where applicable, a separate state form.

After the distribution, the payer reports the gross amount and the federal tax withheld on Form 1099-R, which you’ll receive early the following year.⁸ The withheld amount is credited against your total tax liability on your return, the same way paycheck withholding is. If withholding plus your other payments exceeds what you owe, the difference comes back as a refund.

1
Internal Revenue Service. 2026 Form W-4R
2
Internal Revenue Service. About Form W-4P, Withholding Certificate for Periodic Pension or Annuity Payments
3
Internal Revenue Service. Plan Distributions to Foreign Persons Require Withholding
4
Office of the Law Revision Counsel. 26 U.S.C. 3405 – Special Rules for Pensions, Annuities, and Certain Other Deferred Income
5
Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
6
Office of the Law Revision Counsel. 26 U.S.C. 6654 – Failure by Individual to Pay Estimated Income Tax
7
Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
8
Internal Revenue Service. Instructions for Forms 1099-R and 5498 (2025)