Cash Balance Plan Calculator: Pre-Exit Tax Savings for Business Owners (2026)

A cash balance plan lets you deduct $150,000–$290,000 per year before you sell — money that goes into a tax-deferred retirement account, not to the IRS. This calculator shows your estimated annual contribution based on your age, how much income tax you save in the years before closing, and what the accumulated IRA balance looks like at exit.

How contribution estimates are calculated

Cash balance plan contributions are not fixed dollar amounts — they are actuarially calculated. The IRS limit governing defined benefit plans (including cash balance plans) is the IRC § 415(b) maximum annual benefit: $290,000 per year in retirement income for 2026.¹ A cash balance plan promises a lump sum at retirement (typically the present value of the maximum annuity, approximately $3.7 million). The annual contribution required to reach that lump sum is larger the older you are — fewer years of compounding remain.

This calculator uses actuarially typical midpoint estimates for an owner-only plan designed to reach the § 415(b) ceiling, assuming:

• Owner compensation of at least $360,000 — the 2026 IRC § 401(a)(17) compensation ceiling used in benefit calculations¹
• Owner-only plan (no rank-and-file employees; adding employees requires coverage testing and increases total plan cost)
• Plan crediting rate of approximately 5% (typical for cash balance plan design; lower crediting rates permit somewhat higher contributions)

Actual annual contributions must be set by a licensed actuary based on your specific plan design, compensation history, prior plan years, and investment return experience. The ranges here are illustrative — they will be close for a standard owner-only plan at high compensation, but your actuary's number is the one that controls.

2026 contribution limit reference

Approximate annual contribution ranges for an owner-only cash balance plan targeting the 2026 § 415(b) maximum, by age:

401(k) figures show employee elective deferral only. Employer profit-sharing contributions — up to the § 415(c) $72,000 total limit (2026) — can add $36,000–$47,500 more per year. Super catch-up applies at ages 60–63 per SECURE 2.0 § 109.

What happens to the plan when you sell the business?

You terminate the plan and roll the full balance to an IRA. The rollover is tax-free. Key mechanics:

• Asset sale: Plan termination is straightforward — the legal entity continues after the sale and can terminate the plan before or at closing. Execute the termination before the asset purchase agreement closes.
• Stock sale: The buyer acquires the entity and inherits the plan. Your right to terminate and roll to an IRA must be explicitly addressed in the purchase agreement. This is a negotiation point — get it in the deal documents, not as an afterthought.
• 100% vesting on termination: Plan termination triggers immediate 100% vesting of all accrued benefits, including any profit-sharing in a stacked 401(k).³
• Business sale exception to permanency rule: The IRS permanency requirement for qualified plans does not prevent termination when a business genuinely ceases operations. Owner-only plans terminated in connection with a legitimate business sale generally do not face permanency challenges.
• PBGC: Owner-only cash balance plans are not PBGC-insured. Termination requires a final actuarial valuation, distribution of assets, and filing IRS Form 5310. The process takes 4–6 months — begin it before, not at, closing.

The rate arbitrage: deduct now, withdraw later at lower rates

The financial logic is straightforward. Deduct $200,000 at 37% federal + 5% state (42% combined): save $84,000 in tax this year. The money goes into a tax-deferred IRA. In retirement, you withdraw at a blended effective rate of 18–24% — the arbitrage is the spread between your peak pre-sale rate and your retirement rate. On a 3-year, $200K/year cash balance plan at 42% combined:

• Tax savings at close: ~$252,000
• IRA balance at exit: ~$660,000 (at 5% growth)
• Eventual withdrawal tax at 22%: ~$145,000
• Permanent tax reduction: ~$107,000

The post-sale period — when your taxable income drops sharply — is the ideal window to convert the IRA to a Roth using a multi-year conversion ladder that fills lower tax brackets. See our Roth conversion calculator to model this step.

When a cash balance plan does not make sense

Three scenarios where the math does not favor a cash balance plan:

• Sale in less than 12 months with no prior plan year open: Plan must be established before the business's tax year closes. If the LOI is already signed and your fiscal year is nearly over, the window may be closed for the current year.
• Significant rank-and-file employees: Coverage testing requires proportional contributions for non-highly-compensated employees. Plans with 10+ W-2 employees face substantially higher total plan costs. Get an actuarial quote before assuming the math works.
• Low EBITDA businesses: Cash balance contributions reduce reported EBITDA in the sale year. If your deal is priced on a trailing twelve-month multiple and the sale year's EBITDA is what's being valued, buyers will add back owner retirement contributions — but only if they're shown as discretionary. Verify with your M&A advisor that the buyer's normalization methodology handles this correctly before contributing.