The 415 limit defined benefit plan rule for 2026 caps the annual pension a plan can promise at $290,000, up from $280,000 in 2025, under Internal Revenue Code section 415(b) (Source: IRS Notice 2025-67). That figure is a benefit cap, not a contribution cap, which is why a defined benefit plan can support deductible contributions far above the $72,000 defined contribution limit.
The 415 limit for a defined benefit plan in 2026 is a maximum annual benefit of $290,000, up from $280,000 in 2025, set by Internal Revenue Code section 415(b) (Source: IRS Notice 2025-67). It equals the lesser of $290,000 or 100% of the participant’s highest three consecutive years of average compensation. It caps the pension the plan can pay, not the dollars contributed in a year.
The 415 limit for a defined benefit plan in 2026 is a $290,000 benefit cap
The 415 limit for a defined benefit plan in 2026 is a $290,000 maximum annual benefit under IRC section 415(b)(1)(A), increased from $280,000 in 2025 (Source: IRS Notice 2025-67). It is the largest yearly pension the plan may promise a participant, not the amount deposited. The Internal Revenue Service adjusts this figure each year for cost of living under section 415(d).
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This distinction is the single most misread point about defined benefit plans. Searchers expect one number they can contribute. Section 415 instead caps the promised retirement income and leaves the funding contribution to be calculated backward from it.
IRS Publication 560 states the funding mechanism directly: contributions to a defined benefit plan are based on what is needed to provide definitely determinable benefits, and actuarial assumptions and computations are required to figure those contributions (Source: IRS Publication 560). The deductible contribution is whatever an enrolled actuary certifies as needed to reach the capped benefit.
The 415(b) “lesser of” rule: $290,000 or 100% of high-3 average pay
Under IRC section 415(b), the 2026 defined benefit limit equals the lesser of a $290,000 annual benefit or 100% of the participant’s average compensation for the highest three consecutive calendar years (Source: IRS Notice 2025-67; IRS Publication 560). Whichever figure is smaller controls the plan’s target pension, so lower earners can be capped below $290,000.
The 415(b) test has two parts, and the smaller one governs. For a high earner whose three-year average pay is above $290,000, the dollar limit binds and the plan targets a $290,000 annual pension. For someone with lower average pay, the 100% of high-3 compensation figure caps the benefit below the dollar limit.
An example makes the compensation test concrete. A participant with a highest three-year average of $200,000 is limited to a $200,000 target benefit, because 100% of high-3 pay is less than $290,000. A participant averaging $400,000 is held to the $290,000 dollar cap. The high-3 average uses actual compensation, itself subject to the annual compensation limit described below.
415(b) vs 415(c): a benefit limit next to the $72,000 additions limit
Section 415 sets two different 2026 limits. The 415(b) defined benefit limit caps an annual pension benefit at $290,000. The 415(c) defined contribution limit caps total annual additions to a defined contribution account, such as a 401(k), at $72,000, up from $70,000 in 2025 (Source: IRS Notice 2025-67). One caps a promised benefit; the other caps yearly deposits.
The gap between these two figures is the reason a defined benefit plan can produce far larger deductions than a 401(k). A defined contribution plan is bound by the $72,000 annual additions ceiling. A defined benefit plan is bound only by the $290,000 benefit it may promise, and the contribution needed to fund that benefit is actuarially determined with no fixed dollar cap.
| 2026 rule | IRC section 415(b) | IRC section 415(c) |
|---|---|---|
| What it limits | Annual pension benefit a plan can pay | Total annual additions to a DC account |
| 2026 figure | $290,000 annual benefit | $72,000 annual additions |
| 2025 figure | $280,000 | $70,000 |
| Plan type | Defined benefit and cash balance | 401(k), profit-sharing, SEP |
| Fixed contribution cap? | No; contribution is actuarially set | Yes; the $72,000 ceiling |
Read together, the two figures explain the appeal. An older, high-income owner can often deduct a six-figure defined benefit contribution well above the $72,000 additions limit. That is an arithmetic comparison of two published IRS figures, not a claim that one plan is better than another.
The 401(a)(17) compensation limit is $360,000 for 2026
The 401(a)(17) annual compensation limit for 2026 is $360,000, up from $350,000 in 2025 (Source: IRS Notice 2025-67). It caps the amount of pay a qualified plan can count when applying its benefit or contribution formula, so compensation above $360,000 cannot be used to raise a defined benefit plan’s target pension.
The compensation limit works alongside the 415(b) benefit cap rather than replacing it. Section 401(a)(17) limits how much salary the plan formula recognizes, while section 415(b) limits the resulting benefit. A participant earning $500,000 has plan-recognized pay capped at $360,000, and the promised benefit is still held to the $290,000 415(b) figure.
For most owner-only plans built to fund the maximum, the $290,000 415(b) cap is the binding constraint because average pay already exceeds it. The $360,000 compensation limit matters more in plans that use a percentage-of-pay benefit formula, where recognized compensation drives the target directly.
There is no fixed contribution limit: funding is actuarially set
A defined benefit plan has no fixed annual contribution limit for 2026. The IRS caps the benefit at $290,000 under section 415(b), and an enrolled actuary calculates the deductible contribution needed to fund it (Source: IRS Publication 560; IRS Notice 2025-67). The number is specific to each participant’s age, income, and target benefit.
No cost-of-living table publishes a maximum defined benefit contribution because none exists as a flat figure. Publication 560 states that the deduction for contributions to a defined benefit plan is based on actuarial assumptions and computations, and that an actuary must figure the deduction limit (Source: IRS Publication 560).
Two variables move the contribution more than any others: age and compensation. The older the participant, the fewer years remain to fund the same target pension, so the required annual contribution rises. Higher compensation supports a larger target benefit, up to the 415(b) cap. Funding a benefit over 10 years takes far larger yearly deposits than funding the same benefit over 30 years.
Age-based 2026 contribution funding table (illustrative)
Because a defined benefit contribution is funded to a benefit target, the annual amount rises steeply with age. Illustrative 2026 modeling from actuarial administration firms shows maximum funding climbing from roughly $130,000 in the early 40s to about $442,250 near age 62 for an owner with pay high enough to support the 415(b) cap (as modeled by Emparion). Actual figures are actuarially determined per IRS Publication 560.
The table below shows illustrative maximum annual contribution estimates by age for an owner-only defined benefit or cash balance plan, assuming compensation high enough to fund a benefit near the 2026 415(b) limit. These are third-party actuarial estimates, not IRS figures, and they shift with interest rates, plan design, and funding assumptions.
| Participant age | Illustrative maximum 2026 DB contribution | Primary driver |
|---|---|---|
| 40 | ~$130,000 | Long funding horizon lowers required deposit |
| 45 | ~$170,000 | Shorter horizon raises required deposit |
| 50 | ~$230,000 | Funding compresses into fewer years |
| 55 | ~$300,000 | Fewer years to reach the target benefit |
| 60 | ~$400,000 | Maximum funding pressure before retirement |
| 62 | ~$442,250 | Near normal retirement age; highest funding |
Treat every figure as an estimate that depends on the target benefit, service, and funding assumptions. Interest-rate and segment-rate sensitivity materially changes these numbers, so a participant relying on a prior-year table may be working from figures never recomputed on 2026 assumptions. An enrolled actuary must certify the deductible amount.
The lifetime lump-sum cap of roughly $3.5 million to $3.7 million
A defined benefit plan is also limited by a maximum lump-sum value, the present value equivalent of the 415(b) benefit limit. Actuarial firms commonly cite a single-sum accumulation of roughly $3.5 million to $3.7 million at about age 62 (as modeled by Emparion and Saber Pension). This is a modeled figure that moves with interest rates, not a fixed statutory dollar amount.
This ceiling explains why contributions cannot continue indefinitely. Once a plan is funded to its maximum lump-sum equivalent for a participant’s age, additional deductible contributions for that person generally stop. The lump-sum cap keeps the 415(b) benefit limit meaningful when a plan pays a single sum instead of a monthly pension.
Overfunding beyond the deduction rules carries a real cost. Excess amounts are generally nondeductible and can be subject to excise tax, and surplus assets on plan termination can face additional tax (general tax-code framework; specific excise provisions were not independently verified in the IRS sources reviewed here). This is why plans are designed conservatively and reviewed by an actuary each year.
Cash balance plans: a defined benefit variant under the same 415 cap
A cash balance plan is a type of defined benefit plan, so it is subject to the same 415(b) limit of $290,000 for 2026 (Source: IRS Notice 2025-67). Both are actuarially funded and require an enrolled actuary. The difference is presentation: a traditional plan states a future monthly pension, while a cash balance plan shows a hypothetical account balance with pay and interest credits.
Because a cash balance plan presents a running balance, many owners and employees find it easier to read than a traditional pension formula. The 415(b) benefit cap, the compensation limit, and the actuarial funding requirement apply identically to both structures.
| Feature | Traditional defined benefit plan | Cash balance plan |
|---|---|---|
| Legal category | Defined benefit | Defined benefit (a variant) |
| How benefit is stated | Monthly pension at retirement | Hypothetical account balance with credits |
| 2026 415(b) cap | $290,000 annual benefit | $290,000 annual benefit equivalent |
| Funding | Actuarially determined | Actuarially determined |
| Participant readability | Lower; expressed as future income | Higher; resembles an account balance |
Combo plans: pairing a defined benefit plan with a 401(k)
Many owners pair a defined benefit or cash balance plan with a 401(k) profit-sharing plan to raise total annual contributions, a structure often called a combo plan (as described by Emparion and Saber Pension). The defined benefit plan carries the large actuarial contribution, and the 401(k) adds elective deferrals plus a limited profit-sharing amount, subject to combined-plan deduction rules.
The 2026 defined contribution building blocks are set. The 401(k) elective deferral limit is $24,500, up from $23,500 in 2025; the age-50-and-older catch-up is $8,000, bringing that group to $32,500; and participants ages 60 to 63 can use a higher $11,250 catch-up for a $35,750 total deferral (Source: IRS Notice 2025-67).
A large defined benefit deduction reshapes a household’s taxable income, which can open room for other planning once the pattern changes. Many high earners revisit a Roth conversion strategy after peak-earning years end, and modeling how much to convert to a Roth depends on where taxable income lands after these deductions.
Source authority and effective date
All 2026 figures take effect January 1, 2026, and come from IRS Notice 2025-67, “2026 Amounts Relating to Retirement Plans and IRAs, as Adjusted for Changes in Cost-of-Living” (Source: IRS Notice 2025-67, Internal Revenue Bulletin 2025-49). The statutory backbone is IRC section 415, with 415(b) the benefit limit, 415(c) the additions limit, and 415(d) the annual cost-of-living adjustment.
Deduction rules trace to IRC section 404, as summarized in IRS Publication 560, which also states the actuary requirement for defined benefit funding. The IRS announced the 2026 changes in news release IR-2025-111 on November 13, 2025. The compensation limit sits in IRC section 401(a)(17) at $360,000 for 2026.
These plans interact with the rest of a household’s tax picture. A large deduction can affect exposure to the net investment income tax for 2026, and the assets eventually face required minimum distributions once rolled to an IRA at RMD age.
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Frequently asked questions
What is the 415 limit for 2026?
Section 415 sets two 2026 limits. The 415(b) defined benefit annual benefit limit is $290,000, up from $280,000 in 2025; the 415(c) defined contribution annual additions limit is $72,000, up from $70,000 (Source: IRS Notice 2025-67). The first caps a pension benefit a plan can pay; the second caps total additions to a defined contribution account.
What is the maximum benefit for a defined benefit plan in 2026?
The maximum annual benefit for 2026 is $290,000, up from $280,000 in 2025, under IRC section 415(b)(1)(A) (Source: IRS Notice 2025-67). It equals the lesser of $290,000 or 100% of the participant’s highest three consecutive years of average compensation, so a lower earner may be capped below the dollar figure.
Is there a contribution limit for a defined benefit plan?
No fixed statutory contribution limit exists for a defined benefit plan. The IRS caps the annual benefit at $290,000 for 2026, and the plan is funded to reach it, with the deductible contribution certified by an enrolled actuary (Source: IRS Publication 560; IRS Notice 2025-67). This is why these plans can allow far larger deductions than a 401(k).
How much can you contribute to a defined benefit plan?
The contribution is whatever an actuary calculates as needed to fund the promised benefit, with no fixed cap (Source: IRS Publication 560). For an owner-only plan, illustrative actuarial modeling shows maximum funding rising with age, from roughly $130,000 in the early 40s to about $442,250 near age 62 (as modeled by Emparion). Age and income are the largest drivers.
What is the difference between the 415(b) and 415(c) limits?
Section 415(b) caps the annual pension benefit a defined benefit plan can pay at $290,000 for 2026. Section 415(c) caps total annual additions to a defined contribution account, such as a 401(k), at $72,000 for 2026 (Source: IRS Notice 2025-67). One limits a promised benefit; the other limits yearly deposits to an account.
What is the 401(a)(17) compensation limit for 2026?
The 401(a)(17) annual compensation limit for 2026 is $360,000, up from $350,000 in 2025 (Source: IRS Notice 2025-67). It caps the pay a qualified plan can count in its benefit or contribution formula, so compensation above $360,000 cannot raise a defined benefit plan’s target pension or a plan contribution.
This article is educational and informational only. It is not investment, tax, or legal advice and is not a recommendation to adopt any plan or strategy. Tax rules are complex and depend on individual circumstances; figures cited are from the named IRS sources for 2026 and may change. Consult a qualified tax or financial professional and, for defined benefit plans, an enrolled actuary before acting. Q3 Advisors is a registered investment adviser; registration does not imply a certain level of skill or training, and additional information is available in our Form ADV.
