Tax withholding in retirement works differently than it did during your working years: no employer runs it on autopilot, and each income source has its own rule and its own IRS form. Once paychecks stop, the responsibility for withholding the right amount, or paying it another way, shifts to you.
In retirement, federal tax is not withheld automatically from most income. Traditional IRA and other nonperiodic distributions default to 10% withholding, eligible rollover distributions from a 401(k) or TSP are withheld at a mandatory 20%, pensions use the wage-style W-4P, and Social Security withholding is opt-in via Form W-4V at 7%, 10%, 12%, or 22% (Source: IRS Publication 575, 2025; IRS Form W-4V, Rev. January 2026).
Why withholding changes the day you retire
During your career, one employer withheld tax from every paycheck. In retirement, income arrives from several payers at once, each with its own default rule, so the total withheld may not match your actual tax bill. You now choose, source by source, whether tax is withheld and how much, using Form W-4P, W-4R, or W-4V (Source: IRS, About Form W-4P / W-4R / W-4V, 2026).
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The shift is from employer autopilot to retiree self-management. Whether you owe tax at all depends on the account. Traditional IRA, 401(k), and TSP withdrawals are generally taxed as ordinary income in the year received, while qualified Roth withdrawals are generally tax-free (Source: IRS Publication 575, 2025). That difference drives how much withholding, if any, each source needs.
IRA distributions: the 10% default and Form W-4R
A nonperiodic distribution from a traditional IRA that is not an eligible rollover distribution is withheld at a default rate of 10% unless you choose otherwise, and you can raise it, lower it, or elect no withholding (Source: IRS Publication 575, 2025; 26 U.S.C. section 3405(b)). You make that election on Form W-4R (Source: IRS, About Form W-4R, Rev. 2026).
Form W-4R lets a payer withhold the correct amount of federal income tax from a nonperiodic payment or an eligible rollover distribution from an IRA or employer plan (Source: IRS, About Form W-4R, Rev. 2026). For periodic IRA payments made at regular intervals over more than one year, Form W-4P applies instead. The dividing line is periodic versus nonperiodic, not the type of account.
The 10% default is a starting point, not a target. Because traditional IRA withdrawals are generally 100% taxable as ordinary income, 10% may fall short of your actual marginal rate, which is one reason a mid-year check can matter (Source: IRS Publication 575, 2025).
401(k), 403(b), and TSP: the mandatory 20% rule
An eligible rollover distribution paid directly to you from a 401(k), 403(b), or the federal Thrift Savings Plan is subject to mandatory 20% federal withholding, and you cannot elect out of it (Source: IRS Publication 575, 2025; 26 U.S.C. section 3405(c)). A direct rollover, in which the administrator sends the money straight to another qualified plan or an IRA, avoids the 20% because no tax is withheld.
This is a defining difference between employer-plan money and IRA money. If the check comes to you first, 20% is withheld until you file, even if you intend to roll the funds over. To complete a full rollover within the 60-day window, you would need to replace the withheld amount from other savings (Source: IRS Publication 575, 2025).
The mandatory-20% rollover shortfall: if you take a $100,000 eligible rollover distribution and want to move the full amount to an IRA within 60 days, the plan withholds $20,000, so you receive $80,000. To complete a full rollover you must add $20,000 from other savings, or that $20,000 counts as a taxable distribution (Source: IRS Publication 575, 2025).
Pensions and annuities: withholding that behaves like wages
Periodic pension and annuity payments are withheld like wages, using the IRS withholding methods applied to the information on your Form W-4P (Source: 26 U.S.C. section 3405(a); IRS, About Form W-4P, 2026). This is the retirement income that most resembles your old paycheck. You set, change, or waive that withholding on Form W-4P, which you submit to the payer rather than to the IRS.
Form W-4P covers periodic pension, annuity, profit-sharing, stock bonus, or IRA payments (Source: IRS, About Form W-4P, 2026). You submit it to the payer, such as OPM for a federal annuity or a private plan administrator. For periodic payments, the law lets a payee elect not to have withholding apply, an option that does not exist for eligible rollover distributions (Source: 26 U.S.C. section 3405(a)(2) and (c)). Federal and TSP retirees often coordinate a pension or annuity and a separate TSP withdrawal, so the two can carry different withholding rules at the same time.
Social Security: withholding is opt-in
Social Security has no automatic or required federal withholding. It is opt-in, and you request it on Form W-4V (Source: IRS, About Form W-4V, 2026; SSA, Withholding Income Tax From Your Social Security Benefits, 2026). When you opt in, only four fixed percentages are allowed: 7%, 10%, 12%, or 22% of the monthly benefit, selected on Line 6 (Source: IRS Form W-4V, Rev. January 2026). Flat dollar amounts are not permitted.
If you file nothing, nothing is withheld from your benefit. Because the choices are limited to four flat rates rather than a dollar figure, some retirees pair a Social Security withholding election with withholding from another source, such as an IRA distribution, to reach a target total (Source: SSA, 2026).
Are your Social Security benefits even taxable?
Taxability depends on combined income, also called provisional income: roughly your adjusted gross income plus nontaxable interest plus half your benefits. Below $25,000 (single) or $32,000 (married filing jointly), benefits are generally not taxed. Between those figures and $34,000 (single) or $44,000 (joint), up to 50% may be taxable; above $34,000 or $44,000, up to 85% may be included, which is the statutory maximum (Source: IRS Publication 915, 2025).
These base thresholds are set in statute and are not adjusted for inflation, so more benefits fall into the taxable range over time (Source: IRS Publication 915, 2025). The 2025 law commonly called the One Big Beautiful Bill Act added a temporary additional deduction for taxpayers age 65 and older for tax years 2025 through 2028, subject to income limits, and the 2026 standard deduction rose to $32,200 for married filing jointly and $16,100 for single filers (Source: IRS, Rev. Proc. 2025-32, tax year 2026). A larger deduction can lower taxable income even when the Social Security thresholds themselves do not move. The interaction with rising benefits is often called the tax torpedo, which we cover in the Social Security tax torpedo guide.
RMDs: how required distributions interact with withholding
Required minimum distributions generally begin at age 73, rising to 75 for those born in 1960 or later starting in 2033, and are taxable ordinary income when taken from traditional accounts (Source: IRS, Retirement Topics – RMDs, 2026; SECURE 2.0 Act). Because an RMD is usually a nonperiodic IRA distribution, its default withholding is 10%, adjustable on Form W-4R (Source: IRS Publication 575, 2025).
An RMD offers a timing feature. Because it is often taken late in the year, you can set a withholding amount from that distribution to help cover tax owed on other income, then reconcile the rest at filing. Full RMD mechanics and 2026 age rules are covered in the required minimum distributions guide.
Year-end withholding and how it is credited
Federal tax withheld from any source is generally treated as paid evenly throughout the year, regardless of when it was actually withheld, unless you elect to treat it as paid on the actual dates (Source: IRS, Form 2210 Instructions, 2025). Estimated tax payments, by contrast, are credited on the date paid. That difference affects how the underpayment penalty is calculated across the four installment periods.
Because withholding is generally deemed paid evenly, a distribution taken late in the year with tax withheld from it is still treated as paid across all four periods (Source: IRS, Form 2210 Instructions, 2025). This is why some retirees route tax through year-end IRA or RMD withholding rather than sending four separate quarterly checks. It is a timing feature of how withholding is credited, not a special program, and it does not change the total tax owed.
Whether that approach fits any individual situation depends on cash flow, the source of the distribution, and other income, so it is one factor to weigh with a qualified professional.
Avoiding the underpayment penalty: safe harbors
You can generally avoid an underpayment penalty if payments through withholding and timely estimates total at least 90% of your current-year tax or 100% of your prior-year tax, whichever is smaller (Source: IRS, Form 2210 Instructions, 2025). If prior-year adjusted gross income was above $150,000 ($75,000 if married filing separately), the prior-year figure rises to 110% (Source: IRS Publication 505, 2026).
| Safe harbor | Threshold | Who it fits |
|---|---|---|
| 90% of current-year tax | Pay at least 90% of what you owe this year | Income roughly flat or falling |
| 100% of prior-year tax | Match last year’s total tax | Many retirees; simple to target |
| 110% of prior-year tax | Prior-year AGI above $150,000 ($75,000 MFS) | Higher-AGI households |
Quarterly estimated taxes: the alternative to withholding
When withholding does not cover the bill, the IRS alternative is quarterly estimated tax payments, generally due April 15, June 15, September 15, and January 15 of the following year (Source: IRS Publication 505, 2026). Estimates are credited on the date paid, so a missed early quarter can trigger a penalty even if you catch up later in the year.
State tax adds a parallel track. Many states require their own estimated payments on similar schedules, and state withholding elections on pensions or IRA distributions are often separate from the federal election (Source: IRS Publication 505, 2026, for the federal framework; state rules vary). Roth conversions raise a specific point to consider: withholding conversion tax from the converted amount shrinks the balance that lands in the Roth and, before age 59-and-a-half, the withheld portion can be treated as an early distribution (Source: IRS Topic No. 558). How to fund conversion tax is one factor to weigh with a qualified professional, detailed on our Roth conversion service page.
A worked example: one target withholding number
This illustration walks through estimating a single target withholding figure for a married couple in 2026, both over 65, with $36,000 in Social Security, a $24,000 pension, and a $40,000 traditional IRA RMD. The steps below estimate taxable income, apply the 2026 standard deduction, and identify any withholding gap. It is an example only, not advice.
- Estimate taxable income. Up to 85% of the $36,000 benefit, about $30,600, may be taxable at this income level; add the $24,000 pension and the $40,000 RMD for roughly $94,600 of ordinary income (Source: IRS Publication 915, 2025; IRS Publication 575, 2025).
- Subtract the 2026 standard deduction of $32,200 for married filing jointly, plus any additional age-65 amounts for which the couple qualifies, leaving taxable income near $62,000 before other adjustments (Source: IRS, Rev. Proc. 2025-32, tax year 2026).
- Estimate the tax on that amount using the 2026 brackets, then compare it to what is already withheld. This figure is an estimate only; the IRS Tax Withholding Estimator is one tool available for a more precise calculation (Source: IRS, Tax Withholding Estimator, 2026).
- Fill any gap. The couple could, for example, set W-4V Social Security withholding at 7% or 10%, set the pension via W-4P, and direct the remainder from the year-end RMD on Form W-4R, so the total across sources meets a safe harbor.
States that do not tax retirement income
State income tax on retirement income varies widely. Nine states levy no broad personal income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming (Source: state revenue agencies, 2026). New Hampshire completed the phase-out of its former tax on interest and dividends. Washington applies a tax to certain capital gains but not to wages or retirement income.
Even in states that levy an income tax, treatment of Social Security, pensions, and IRA withdrawals differs by state, so the federal withholding choices above may need a separate state election on the same forms or on state equivalents (Source: state revenue agencies, 2026).
Federal tax withholding in retirement: which form for which income
Each retirement income source has a default withholding rule and a matching IRA-style form: IRA nonperiodic distributions and RMDs use W-4R at a 10% default, employer-plan eligible rollover distributions use W-4R at a mandatory 20%, periodic pensions use wage-style W-4P, and Social Security uses opt-in W-4V (Source: IRS Publication 575, 2025; 26 U.S.C. section 3405). The table below summarizes each.
| Income source | Default federal withholding | Form used | Can you elect out? |
|---|---|---|---|
| Traditional IRA nonperiodic / RMD | 10% | W-4R | Yes |
| 401(k), 403(b), TSP eligible rollover distribution | 20% mandatory | W-4R | No (direct rollover avoids it) |
| Pension / annuity (periodic) | Wage-style via IRS methods | W-4P | Yes |
| Social Security | 0% (opt-in) | W-4V | N/A (opt-in only) |
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Q3 Advisors is a registered investment adviser focused on retirement tax planning. This article is educational and is not advice; for guidance on your own circumstances, consult a qualified tax or financial professional.
Frequently asked questions
Do you have to pay taxes on retirement income?
Often, yes. Traditional IRA, 401(k), and TSP withdrawals are generally taxed as ordinary income, and pensions are usually taxable (Source: IRS Publication 575, 2025). Up to 85% of Social Security benefits can be taxable depending on combined income (Source: IRS Publication 915, 2025). Qualified Roth withdrawals are generally tax-free. Whether tax is withheld is a separate choice from whether tax is owed.
What is the default tax withholding on IRA distributions?
For a nonperiodic traditional IRA distribution that is not an eligible rollover distribution, the default federal withholding is 10% unless you choose otherwise on Form W-4R (Source: IRS Publication 575, 2025; 26 U.S.C. section 3405(b)). Because IRA withdrawals are generally fully taxable ordinary income, 10% can be lower than your actual marginal rate, so a mid-year review can help.
How much federal tax is withheld from a 401(k) withdrawal?
An eligible rollover distribution paid to you from a 401(k) is subject to mandatory 20% federal withholding, and you cannot elect out of it (Source: IRS Publication 575, 2025; 26 U.S.C. section 3405(c)). A direct rollover to an IRA or another qualified plan avoids the 20%, because no tax is withheld on direct rollovers to a receiving account.
What percentage can I withhold from Social Security, and what form do I use?
Social Security withholding is opt-in and offers four fixed rates: 7%, 10%, 12%, or 22% of the monthly benefit (Source: IRS Form W-4V, Rev. January 2026; SSA, 2026). You request it on Form W-4V, selecting the rate on Line 6, and you submit the form to the Social Security Administration. Flat dollar amounts are not allowed for Social Security withholding.
How do I change tax withholding on my pension?
Submit a new Form W-4P to your pension or annuity payer, such as OPM or your plan administrator, not to the IRS (Source: IRS, About Form W-4P, 2026). Periodic pension payments are withheld using IRS wage-style methods, and the law lets you elect no withholding on periodic payments if you prefer to pay another way (Source: 26 U.S.C. section 3405(a)(2)).
How can I avoid an underpayment penalty in retirement?
One approach is to meet a safe harbor: pay at least 90% of current-year tax or 100% of prior-year tax, rising to 110% if prior-year AGI was above $150,000 (Source: IRS, Form 2210 Instructions, 2025; IRS Publication 505, 2026). Because withholding is generally treated as paid evenly across the year, a year-end withholding can also help cover the liability (Source: IRS, Form 2210 Instructions, 2025).
Do I need to pay quarterly estimated taxes in retirement?
Only if withholding does not cover enough of your tax. When it falls short, the alternative is quarterly estimated payments, generally due April 15, June 15, September 15, and January 15 (Source: IRS Publication 505, 2026). Some retirees instead route tax through year-end withholding, since withholding is generally credited as paid evenly across the year (Source: IRS, Form 2210 Instructions, 2025).
What states do not tax retirement income?
Nine states levy no broad personal income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming (Source: state revenue agencies, 2026). New Hampshire completed the phase-out of its former tax on interest and dividends. Even in states that levy an income tax, treatment of Social Security, pensions, and IRA income varies, so a separate state withholding election may apply.
Sources
IRS, Publication 575 (2025), Pension and Annuity Income: https://www.irs.gov/publications/p575
IRS, Publication 915 (2025), Social Security and Equivalent Railroad Retirement Benefits: https://www.irs.gov/publications/p915
IRS, About Form W-4P: https://www.irs.gov/forms-pubs/about-form-w-4p
IRS, About Form W-4R: https://www.irs.gov/forms-pubs/about-form-w-4r
IRS, About Form W-4V: https://www.irs.gov/forms-pubs/about-form-w-4-v ; Form W-4V (Rev. Jan. 2026): https://www.irs.gov/pub/irs-pdf/fw4v.pdf
26 U.S.C. section 3405 (Cornell LII): https://www.law.cornell.edu/uscode/text/26/3405
IRS Topic No. 558 (early distributions): https://www.irs.gov/taxtopics/tc558
IRS, Publication 505, Tax Withholding and Estimated Tax: https://www.irs.gov/publications/p505
IRS, Instructions for Form 2210 (2025): https://www.irs.gov/instructions/i2210
IRS, Retirement Topics – Required Minimum Distributions (RMDs): https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-required-minimum-distributions-rmds
IRS, Rev. Proc. 2025-32, tax year 2026 inflation adjustments: https://www.irs.gov/newsroom/irs-releases-tax-inflation-adjustments-for-tax-year-2026-including-amendments-from-the-one-big-beautiful-bill
IRS, Notice 2025-67, 2026 retirement plan limits: https://www.irs.gov/newsroom/401k-limit-increases-to-24500-for-2026-ira-limit-increases-to-7500
IRS, Tax Withholding Estimator: https://www.irs.gov/individuals/tax-withholding-estimator
SSA, Withholding Income Tax From Your Social Security Benefits: https://www.ssa.gov/benefits/retirement/planner/taxwithold.html
