How does a cash balance plan work?
Depends on age, income, and staff costs
A cash balance plan is a defined benefit plan in which each participant's benefit is shown as a hypothetical account that grows with pay credits and interest credits. Because it is not a defined contribution plan, IRC §414(j) makes it a defined benefit plan, and the hybrid-plan rules of IRC §411(a)(13) and §411(b)(5) apply. Benefits are limited by IRC §415(b), and the employer must fund the plan each year.
Reviewed by Ebot Mbi, CPA, EA · Last reviewed · Law and figures current as of September 17, 2026
Key takeaways
- Legally a defined benefit plan, with an account-style statement.
- Interest credits cannot exceed a market rate of return.
- Larger pay credits for older owners are possible within §415(b) and nondiscrimination limits.
- Funding is required each year, with an enrolled actuary and annual filings.
- Eligible employees must receive benefits under the plan's formula.
What it is
In a cash balance plan, each participant has a hypothetical account. Each year the account is credited with a pay credit, such as a percentage of pay or a flat dollar amount, and an interest credit, which may be fixed or tied to an index. At retirement or separation, the participant can generally take the account balance as a lump sum or an annuity.
Although the statement looks like a 401(k) account, the employer owns the investment risk. If plan assets earn less than the interest credits, the employer must make up the difference.
What the law says
IRC §414(j) defines a defined benefit plan as any plan that is not a defined contribution plan. IRC §411(a)(13) addresses applicable defined benefit plans, which include plans that calculate benefits as the balance of a hypothetical account. IRC §411(b)(5)(B) requires that interest credits not exceed a market rate of return.
IRC §415(b) limits the annual benefit, measured as an annuity, to the lesser of $290,000 for 2026 or 100% of high-3 average compensation. Minimum funding under IRC §430 and the excise tax under IRC §4971 apply as for any single-employer defined benefit plan.
Requirements and tests
A cash balance plan must meet these requirements:
- A written plan with a definitely determinable pay credit and interest credit formula.
- Interest credits no greater than a market rate of return, as defined in the regulations.
- Three-year vesting of accrued benefits.
- Nondiscrimination and minimum participation requirements for eligible employees, often tested together with a 401(k) plan.
- Annual actuarial valuation, minimum required contributions, and Form 5500 filings with Schedule SB.
- Benefits within §415(b) and compensation within the $360,000 limit for 2026.
How it works
The plan document assigns pay credits by group. Owners nearer retirement can receive larger credits than younger employees if the design passes nondiscrimination testing, which considers the value of benefits at each participant's age. The actuary then determines the contribution range needed to fund the credits and existing balances. Because testing depends on employee ages and pay, the same design can be affordable for one business and costly for another, so the employee census is part of the first analysis.
Pay credits accumulate over time, but they are not the same as contributions. In some years the required contribution is more or less than the total credits because of investment results and actuarial assumptions.
Cash balance plans are often paired with a 401(k) profit-sharing plan so that employees receive a combined benefit that satisfies testing at a lower cost than a traditional pension. When a participant leaves, the vested account balance can usually be rolled to an IRA or another plan.
Assumptions: Plan starts in 2026; owner compensation of $300,000 (below the $360,000 limit).; Pay credit of 8% of compensation; interest credit of 5% on the prior year-end balance.; Credits are shown as plan design; the actuary's required contribution may differ each year.
| 2026 pay credit (8% × $300,000) | $24,000 |
|---|---|
| End of 2026 balance | $24,000 |
| 2027 interest credit (5% × $24,000) | $1,200 |
| 2027 pay credit | $24,000 |
| End of 2027 balance | $49,200 |
| Pay credit needed for a $150,000 annual credit at $300,000 of pay | 50% (subject to §415(b) and testing) |
An 8% pay credit builds about $49,200 over two years; much larger annual credits require a much higher pay credit rate that must fit within §415(b) and nondiscrimination rules.
Illustration only; not a projection of your results.
Risks and IRS scrutiny
Investment shortfalls increase required contributions. Plans that credit interest above a market rate, fail nondiscrimination testing, exceed §415(b), or terminate shortly after starting can be challenged. Unpaid required contributions trigger an excise tax. Administration and actuarial fees are significant.
Plans that credit a fixed rate can create surprises when markets fall, because the employer must still fund the promised credits. Choosing an interest credit tied to actual plan returns can reduce that mismatch, subject to the regulations.
Plan changes also require care. Reducing pay credits generally must be done by amendment before the affected service is performed, and benefits already credited cannot be taken away. If the plan terminates, every participant's vested account must be funded and paid out, and any shortfall must be covered by the employer. Because many cash balance plans are designed around one or two owners, a change in the owners' ages, pay, or retirement plans can quickly change the economics.
Who it is not for
Cash balance plans usually do not fit businesses with volatile cash flow, owners who want optional contributions, businesses with many employees whose required credits would be costly, or owners who expect to end the plan within a few years without a business reason. They also add less value for younger owners who can reach their savings goals through a 401(k) profit-sharing plan, which is cheaper to run and does not require annual funding.
How ebotCPA helps
We work with a plan actuary to design pay credits, model contributions and employee costs over several years, coordinate the plan with your 401(k), and track funding and filing deadlines.
Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.
Frequently asked questions
Is a cash balance plan a defined benefit plan?
Yes. Although benefits are shown as account balances, the plan is a defined benefit plan subject to minimum funding, actuarial, and benefit limit rules.
How much can I contribute to a cash balance plan?
It depends on the plan design, your age, pay, and actuarial assumptions. Benefits are limited by §415(b), which for 2026 caps the annual benefit at $290,000 or 100% of high-3 pay.
Can I combine a cash balance plan with a 401(k)?
Yes. They are often combined, subject to nondiscrimination testing and the combined deduction limit.
What interest rate does a cash balance plan pay?
The plan sets an interest credit, which may be fixed or variable but cannot exceed a market rate of return under the regulations.
Have facts like these?
Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.