What Is a Cash Balance Plan and When Does It Make Sense for an Owner?

A cash balance pension plan is the design most owners end up with when a 401(k) and profit sharing plan, capped at $72,000 a person for 2026, is no longer enough shelter. The tax code calls it an applicable defined benefit plan; the regulations call it a statutory hybrid plan. Both names say the same thing: a pension plan that looks like an account. This post explains the mechanics, the 2026 limit, funding and deduction rules, the combination with a 401(k), testing, PBGC coverage and the profile of the owner it fits. The comparison with SEP, SIMPLE and 401(k) designs is in retirement plans for business owners.

How a cash balance plan works: pay credits, interest credits, a hypothetical account

IRC 411(a)(13)(C) defines an applicable defined benefit plan as one “under which the accrued benefit (or any portion thereof) is calculated as the balance of a hypothetical account maintained for the participant” (26 U.S.C. 411). Nothing is actually deposited into that account. The plan document promises two credits to it each year:

• A pay credit, usually a percentage of compensation or a flat dollar amount, which the regulations call a principal credit: any increase to the accumulated benefit that is not an interest credit, including increases conditioned on current service (Treas. Reg. 1.411(b)(5)-1(d)(1)(ii)(D)).
• An interest credit, at a rate the plan fixes or ties to an index. The statute requires the rate to be not greater than a market rate of return, allows a reasonable minimum rate, and requires that a negative credit never push the balance below the total of the pay credits (IRC 411(b)(5)(B)(i)).

The plan's assets are pooled and invested by the trustee, and the employer bears the difference between what the assets earn and what the plan has promised. The regulations call this a lump sum-based benefit formula, one under which the accumulated benefit is expressed as the current balance of a hypothetical account (Treas. Reg. 1.411(a)(13)-1(d)(3)), and IRC 411(a)(13)(A) lets the plan treat that balance as the present value of the accrued benefit, which is what makes a lump-sum payout of the account possible. Vesting is fast by statute: an employee with three years of service must be 100% vested in the employer-derived benefit (IRC 411(a)(13)(B)).

The 2026 benefit limit, and what it means for contributions

A cash balance plan has no dollar contribution limit of the kind a 401(k) has. The limit is on the benefit: the annual benefit at retirement cannot exceed the lesser of $290,000 for 2026 (Notice 2025-67) or 100% of the participant's average compensation for the highest three consecutive years (IRC 415(b)(1); IRS benefit limits page). The actuary works backward from the benefit the plan can pay at the owner's retirement age to the account balance that funds it, and from there to the pay credit the plan can promise now. Fewer years to retirement means a larger annual credit to reach the same balance, which is the arithmetic behind the plan's appeal to older owners.

Funding and deduction: minimum contributions, the actuary and Schedule SB

The IRS lists what a sponsor takes on: file a Form 5500 with a Schedule SB every year, have an enrolled actuary determine the funding levels and sign that schedule, and never retroactively decrease benefits (IRS defined benefit plan page). The funding rules are in IRC 430. Each year the plan owes a minimum required contribution: the target normal cost (the value of the benefits earned that year) plus an amortization charge for any shortfall between the funding target and plan assets (26 U.S.C. 430(a)). It is due 8.5 months after the plan year ends (IRC 430(j)(1)). An unpaid minimum required contribution draws a 10% excise tax, and 100% if it is not corrected within the taxable period (26 U.S.C. 4971(a), (b)).

The deduction ceiling is higher than the minimum. Under IRC 404(o) the deductible amount for a single-employer defined benefit plan is the greater of the minimum required contribution or the sum of the funding target, the target normal cost and a cushion amount, less the value of plan assets; the cushion is 50% of the funding target plus the effect of expected pay increases (26 U.S.C. 404(o)). That range between the minimum and the maximum is where an owner can choose how much to put in during a strong year.

Combining a cash balance plan with a 401(k): the 404(a)(7) rule

Most owner-run cash balance plans sit next to a 401(k) with profit sharing. IRC 404(a)(7) limits the combined deduction for a defined contribution plan and a defined benefit plan to the greater of 25% of the compensation of the participants or the amount needed to meet the defined benefit plan's minimum funding standard, with three carve-outs that make the pairing work (26 U.S.C. 404(a)(7)):

• Elective deferrals are never counted (404(a)(7)(C)(ii)).
• Employer contributions to the 401(k) of up to 6% of compensation are disregarded; only the excess over 6% is tested (404(a)(7)(C)(iii)).
• A defined benefit plan covered by the PBGC is not taken into account at all (404(a)(7)(C)(iv)).

In practice the profit sharing contribution is held at 6% for everyone when the cash balance contribution is large, and the owner's deferrals and catch-up ride on top. Amounts over the limit are not lost; they carry to later years within the 25% ceiling (404(a)(7)(B)).

Nondiscrimination testing in plain terms

A qualified plan must not discriminate in favor of highly compensated employees in contributions or benefits (IRC 401(a)(4)), and a defined benefit plan must benefit at least the lesser of 50 employees or the greater of 40% of all employees or 2 employees (IRC 401(a)(26)). Highly compensated employees are identified by a compensation threshold that Notice 2025-67 keeps at $160,000 (Notice 2025-67). A cash balance plan that gives the owner a large pay credit therefore has to give staff something too, and the actuary runs the tests each year. The usual result is a modest cash balance credit plus a profit sharing contribution for employees, sized so the owner's share of the total passes. Employee cost is real money, so the design only pays when the owner's tax saving on the large contribution exceeds what the staff contributions and the plan's administration cost.

PBGC coverage and the exemptions

The Pension Benefit Guaranty Corporation insures most private-sector defined benefit plans, and covered plans pay premiums. The PBGC's coverage page lists the exemptions that matter for small firms (PBGC, Insurance coverage): a plan of a professional service employer (a business whose principal activity is professional services such as medicine, law or architecture, owned by professionals in that field) that has never covered more than 25 active participants, and a plan maintained exclusively for substantial owners, meaning participants who own more than 10% of the business (or the whole of an unincorporated business). Coverage is decided by law, not by choice: the PBGC says sponsors of covered plans cannot waive coverage, and a sponsor unsure of its status can ask the PBGC for a coverage determination (or an assessment letter for a proposed plan). Coverage also changes the deduction math above, since a PBGC-covered plan is left out of the 404(a)(7) combined limit.

A labeled illustration

The owner sets aside $124,500 in one year, $44,500 more than the 401(k) alone could hold for this owner ($72,000 of annual additions plus the $8,000 catch-up). The employer contributions for staff, the actuary's fee, the Form 5500 and any PBGC premium are the costs against which that extra deduction is measured.

When a cash balance plan tends to fit

• Stable, high income. The minimum required contribution is an obligation, not a choice, and it recurs every year until the plan is amended or terminated. A business whose profit swings cannot promise a pay credit it may not be able to fund.
• An owner with fewer years to retirement. The 415(b) limit is on the benefit at retirement, so the closer the owner is to that age, the larger the annual credit needed to reach it, and the larger the deduction the actuary can support.
• Few employees, or a staff the owner is willing to fund. Every eligible employee gets a credit, the plan must pass the tests in IRC 401(a)(4) and 401(a)(26), and the professional service and substantial owner exemptions from PBGC premiums depend on headcount and ownership.
• A 401(k) already maxed. If the owner is not yet deferring $24,500 and taking the full profit sharing contribution, the cheaper plan still has room.

For an S corporation owner, all of these numbers key off W-2 wages, not distributions, which ties the plan to the salary decision in S corp reasonable salary. Whether the plan belongs in next year's plan is a question Forward Tax Planning answers with your CPA and an actuary, on your numbers.

Sources: 26 U.S.C. 411, minimum vesting standards (411(a)(13) and 411(b)(5), applicable defined benefit plans); 26 CFR 1.411(a)(13)-1, statutory hybrid plans; 26 CFR 1.411(b)(5)-1, interest credits and principal credits; 26 U.S.C. 415, limitations on benefits and contributions (415(b)); IRS, Notice 2025-67, 2026 cost-of-living adjusted limits; IRS, Retirement topics: defined benefit plan benefit limits (reviewed March 6, 2026); IRS, Defined benefit plan (reviewed June 6, 2026); 26 U.S.C. 430, minimum funding standards for single-employer defined benefit plans; 26 U.S.C. 4971, taxes on failure to meet minimum funding standards; 26 U.S.C. 404, deduction for employer contributions (404(a)(7) and 404(o)); 26 U.S.C. 401, qualified plans (401(a)(4) and 401(a)(26)); PBGC, Insurance coverage (updated September 23, 2026). Figures and rules checked against these sources on September 26, 2026. This is general information, not tax advice for your situation. Tax services are provided by licensed tax professionals under a separate engagement agreement. BEG does not provide tax advice.