Are Defined Benefit Plans Taxable? Rollovers, Penalties, and RMDs

Yes, defined benefit plans are taxable. Money you receive from a defined benefit pension is treated as ordinary income in the year it’s paid to you, and your plan reports it on Form 1099-R.¹ The one wrinkle is any after-tax contributions you made during your working years: a portion of each payment representing that money comes back to you tax-free.² Beyond that basic rule, what you actually owe depends on how you take the benefit, when you take it, and how the extra income spills into your Social Security and Medicare.

Monthly Pension Payments

Take your benefit as a stream of monthly checks and the IRS treats each payment like a paycheck. It’s taxed at your ordinary income rate for that year, and the plan reports the annual total on Form 1099-R.¹ For most retirees who never put after-tax money into the plan, every dollar of every check is taxable.

If you did contribute after-tax dollars, that money is your “investment in the contract,” or cost basis. You paid income tax on it once, so you get to recover it tax-free over your retirement payments. For qualified employer plans, the IRS generally requires the Simplified Method to figure the tax-free portion.³ Divide your total after-tax contributions by the expected number of monthly payments from an IRS table keyed to your age at the annuity starting date. The result is a fixed dollar amount you exclude from each monthly check. Once you’ve recovered your entire basis, every payment after that is fully taxable.

Lump-Sum Distributions

Taking your entire pension as one lump sum compresses what could be decades of taxable income into a single year. That alone can push you into the top federal brackets, which is why the rollover option matters so much.

Direct Rollover

The cleanest move is a direct rollover: your plan sends the money straight to a traditional IRA or another qualified plan without the check ever passing through your hands. No income tax is due at the time of transfer, and the money keeps its tax-deferred status.⁴ You pay tax later, as you draw down the IRA.

Indirect Rollover and the 20% Withholding Trap

If the plan cuts a check to you instead, federal law requires 20% to be withheld for income tax right off the top, even if you intend to roll every dollar into an IRA.⁵ You then have 60 days from receipt to deposit the full original distribution into an eligible retirement account.⁴

Here’s where people get caught. Say the plan distributes $200,000 and withholds $40,000. You receive $160,000. To complete a full tax-free rollover, you have to put $200,000 into the IRA within 60 days, covering the $40,000 gap out of your own pocket. If you can only deposit the $160,000 that actually arrived, the IRS treats the missing $40,000 as a taxable distribution. You get credit for the $40,000 withholding on your tax return, but you’ve permanently lost that amount from your tax-deferred retirement savings.

Keeping the Cash

If you skip the rollover, the entire taxable portion is ordinary income that year. For someone with other income, a six-figure lump sum can easily land in the 32% or 37% federal bracket. The 20% withheld is a down payment on the tax bill, not the final number. If you’re under 59½, an early distribution penalty stacks on top.

The 10% Early Distribution Penalty

Pulling money out of a qualified defined benefit plan before age 59½ triggers an additional 10% tax on top of the regular income tax.⁶ On a $100,000 early distribution, that’s $10,000 before you even count income tax. Several exceptions eliminate the penalty, though income tax still applies.

Separation From Service at 55 or Later

If you leave your employer in or after the calendar year you turn 55, distributions from that employer’s qualified plan are exempt from the 10% penalty.⁷ This exception is unique to employer plans. It doesn’t apply to IRAs, so rolling the money into an IRA and then withdrawing before 59½ loses the exception.⁸ That detail catches people who transfer funds reflexively without thinking through whether they might need early access.

Substantially Equal Periodic Payments

Another route is a series of substantially equal periodic payments (sometimes called 72(t) payments) calculated over your life expectancy. Payments must continue until the later of five years from the first payment or the date you reach 59½. Modify the schedule before that point and the IRS imposes a recapture tax, effectively adding the 10% penalty back onto every payment you already took.⁹ That makes 72(t) a long-term commitment, not a short-term workaround.

Other Exceptions and How to Claim Them

Distributions due to total and permanent disability also escape the penalty, as do distributions to a beneficiary after the participant’s death.⁶ Whichever exception applies, you have to report it on Form 5329 at filing time.¹⁰ If the distribution code on your 1099-R doesn’t already reflect the exception and you skip Form 5329, the IRS assesses the 10% penalty automatically.

Required Minimum Distributions

You generally have to start required minimum distributions by April 1 following the year you turn 73.¹¹ For anyone born in 1960 or later, that age is 75.¹²

Good news for most defined benefit recipients: if you’re already receiving monthly annuity payments that meet or exceed the minimum, you satisfy the RMD requirement automatically. Unlike an IRA, where you divide the account balance by a life expectancy factor, a DB plan’s scheduled payments typically handle it on their own. The issue arises only if you took a lump-sum rollover into an IRA. From that point, the IRA’s standard RMD rules apply.

Missing an RMD carries a 25% excise tax on the amount you should have withdrawn.¹² It drops to 10% if you correct the shortfall within two years.¹¹ Steep enough that it’s worth confirming your plan’s payments actually satisfy the requirement, especially in the first year, when timing rules can put two RMDs in one tax year.

How a Pension Affects Your Social Security Taxes

One of the less obvious costs of pension income is that it can make your Social Security benefits taxable. The IRS uses a figure called combined income: your adjusted gross income (which includes pension distributions), plus any tax-exempt interest, plus half of your Social Security benefits.¹³

The thresholds have never been adjusted for inflation, so more retirees cross them every year:

Single filers with combined income between $25,000 and $34,000: up to 50% of Social Security benefits become taxable.
Single filers above $34,000: up to 85% become taxable.
Married filing jointly between $32,000 and $44,000: up to 50% become taxable.
Married filing jointly above $44,000: up to 85% become taxable.

These are statutory numbers.¹⁴ A pension paying $2,500 a month is already $30,000 in pension income alone, which means almost any single filer collecting both a pension and Social Security ends up with 85% of the benefits taxed. A lump-sum year is more dramatic: a $300,000 lump sum in one year virtually guarantees the maximum 85% inclusion for that year. If you can time a rollover or stagger distributions, the Social Security tax impact belongs in the calculation.

Medicare Premium Surcharges

Pension distributions can also raise your Medicare costs through IRMAA, the Income-Related Monthly Adjustment Amount. Medicare uses your modified adjusted gross income from two years earlier to decide whether you owe an extra monthly charge on top of standard Part B and Part D premiums. For 2026, the standard Part B premium is $202.90 per month, and surcharges kick in above $109,000 for single filers or $218,000 for joint filers. Tiers climb from there, and the surcharge hits each spouse independently.

A lump-sum pension distribution is the most common trigger for an unexpected IRMAA spike, because it inflates a single year’s income. And since IRMAA looks back two years, the surcharge lands in a year when most people have forgotten about the distribution. Take a $400,000 lump sum in 2024 and your 2026 Medicare premiums reflect it. A direct rollover avoids this entirely, because rollover amounts aren’t included in adjusted gross income.

Controlling Your Withholding

Your plan withholds federal income tax from each periodic pension payment, and you control the amount by filing Form W-4P.¹⁵ Skip that step and the plan applies default rates that rarely match your actual situation, especially if you have other income. Reviewing your W-4P after any big change in income, filing status, or deductions prevents both an April surprise and unnecessary over-withholding all year.

For lump-sum and other nonperiodic distributions, the form is W-4R rather than W-4P. The mandatory 20% on eligible rollover distributions is a floor you can’t lower, though you can request additional withholding above 20% if you expect to owe more.⁵

State income tax is a separate layer. Some states have no income tax, and several others exempt pension income in whole or in part. Rules and exemption amounts vary widely, so confirm how your state treats pension income before the first check arrives.

1
Internal Revenue Service. About Form 1099-R, Distributions From Pensions, Annuities, Retirement or Profit-Sharing Plans, IRAs, Insurance Contracts, etc.
2
Office of the Law Revision Counsel. 26 U.S. Code 402 – Taxability of Beneficiary of Employees Trust
3
Internal Revenue Service. Publication 575 – Pension and Annuity Income
4
Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
5
Internal Revenue Service. Topic No. 412, Lump-Sum Distributions
6
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
7
Internal Revenue Service. Topic No. 558, Additional Tax on Early Distributions From Retirement Plans Other Than IRAs
8
Office of the Law Revision Counsel. 26 U.S. Code 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts
9
Internal Revenue Service. Substantially Equal Periodic Payments
10
Internal Revenue Service. About Form 5329, Additional Taxes on Qualified Plans
11
Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs
12
Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs)
13
Internal Revenue Service. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable
14
Office of the Law Revision Counsel. 26 U.S. Code 86 – Social Security and Tier 1 Railroad Retirement Benefits
15
Internal Revenue Service. About Form W-4P, Withholding Certificate for Periodic Pension or Annuity Payments