Your 401(k) Caps at $23,500. A Cash Balance Plan Adds $150,000+.

You maxed the 401(k) — $23,500 this year, every year. You feel good about it. You are doing more than most. And then April comes, and you write a check to the IRS for $60,000 or $80,000, and you wonder: if I am doing everything right, why is it still this much?

The answer is not that you are doing anything wrong. The answer is that the 401(k) was never designed to solve a half-million-dollar income. It was designed to let someone earning $150,000 set aside a reasonable retirement contribution. For you, it covers roughly 3% to 5% of your taxable income. The other 95% stands fully exposed.

A cash balance plan — a type of defined benefit plan — exists for exactly this gap. It is the single most powerful retirement vehicle a high-earning business owner or professional can use, and most CPA firms never mention it.

Why the 401(k) ceiling costs you real money

If you earn $520,000 running your own practice, a $23,500 401(k) contribution reduces your taxable income by about 4.5%. Even with an employer profit-sharing contribution, the total max for 2026 is $70,000 ($77,500 if 50 or older). That is better, but it still leaves $400,000-plus of your income exposed.

We covered the profit-sharing mechanics in a prior post on the solo 401(k). The short version: the 401(k) structure caps out well before your income does. The tax code does not lack solutions for this — it simply assumes high earners will use a different vehicle beyond a certain income level. Most high earners never get told about it.

What a cash balance plan actually is

A cash balance plan is a defined benefit plan that looks and feels like a supersized 401(k). Each year, the plan credits your account with a pay credit — the contribution — plus interest at a rate set in the plan document. Your account grows. When you retire, the balance converts to a monthly benefit.

Unlike a traditional pension, a cash balance plan is portable. The benefit is expressed as a dollar figure in your account, not a percentage of final average pay. Leave the practice, sell the business, or close the entity — the money follows you. You can roll the balance into an IRA or another qualified plan when you terminate the plan.

It is also separate from your 401(k). You run both plans side by side. The 401(k) handles your deferrals and a profit-sharing contribution. The cash balance plan does the heavy lifting on top.

How much can you actually contribute?

The 2026 tax code permits a maximum annual benefit of roughly $285,000 in retirement. The annual contribution to fund that benefit depends on two things: your age and the plan's assumed interest rate.

For a 45-year-old business owner, the annual contribution might land between $80,000 and $110,000, depending on the plan design and actuarial assumptions. For a 55-year-old, who has fewer years to fund the same benefit, the annual contribution can reach $160,000 or more. The older you are, the more you can put away — age becomes an advantage rather than a liability.

These contributions are tax-deductible to the business. They reduce your personal taxable income at your marginal rate. And they compound inside a tax-sheltered account until you take distributions in retirement.

Combine a cash balance plan with a 401(k) profit-sharing design, and a business owner in their mid-50s can shelter roughly $200,000 to $230,000 in total annual contributions. That is ten times what the solo 401(k) alone offers the same earner.

Pairing a cash balance plan with your 401(k)

The most effective setup runs both plans together. The 401(k) profit-sharing component is flexible — you choose how much to contribute each year based on your cash flow. The cash balance plan has a set contribution target determined by the plan's actuary, but you must fund it consistently to meet the promised benefit.

A typical combined structure for a 55-year-old earning $500,000:

• 401(k) deferral: $23,500
• Employer profit sharing: $47,500
• Cash balance plan contribution: $130,000 to $160,000
• Total sheltered: $200,000 to $230,000

That is a tax deduction of roughly 40% to 45% of gross income, sheltered inside retirement accounts, compounding until you draw it. The plan must be set up before the end of the calendar year to count for that year's contributions. This is not a strategy you decide in March and apply retroactively — it requires planning by November or December.

Who should consider this

Cash balance plans fit best when your income is consistent and your business is stable. Ideal candidates include:

• Solo practitioners and partners — physicians, dentists, attorneys, architects. Your practice generates reliable W-2 or K-1 income, you have been maxing the 401(k) for years, and you are tired of the April surprise.
• Business owners with few or no employees. Each employee covered by the plan increases the cost of funding their benefits. A solo or spousal business is the cleanest setup.
• High earners in their 40s and 50s. The contribution math improves with age. A 40-year-old can still contribute meaningfully; a 50- or 55-year-old gets the most leverage from the structure.

It is less suited for businesses with irregular cash flow, owners nearing retirement without several years of runway to fund the plan, or companies with a large employee base where covering everyone becomes expensive.

What it costs to set up and run

A cash balance plan requires an actuary to certify the annual contribution and file the plan document with the IRS. Setup runs $3,000 to $5,000 for a solo plan. Annual administration runs $1,500 to $3,000. These costs are themselves tax-deductible business expenses.

Against a contribution of $100,000 or more that would otherwise go to taxes, the cost is negligible — roughly 2 to 5 cents on every dollar sheltered.

The ceiling is not where you think it is

If you max the 401(k) and still owe every April, the problem is not your spending or your withholding. It is that you are using the wrong tool for your income level. A cash balance plan is the right one, and it belongs in your strategy long before April.

Most CPA firms file returns. They do not design retirement plans. That distinction is what separates a strategist from a preparer. When your income outgrows the standard playbook, the standard playbook does not change — you do. You move to a different set of tools.

FAQ

What is a cash balance plan?

A cash balance plan is a type of defined benefit retirement plan that acts like a supersized retirement account for high earners. Each year the plan credits your account with a contribution plus interest, and the balance is portable when you leave or sell the business.

How much can I contribute to a cash balance plan in 2026?

It depends on your age and plan design, but annual contributions typically range from $80,000 to $160,000 for high earners. A 55-year-old business owner can often contribute significantly more than a 40-year-old.

Can I have both a 401(k) and a cash balance plan?

Yes. Running both plans together is the most effective approach. The 401(k) handles deferrals and profit sharing while the cash balance plan contributes additional six-figure amounts on top.

Is a cash balance plan expensive to set up?

Setup costs for a solo plan run roughly $3,000 to $5,000 with annual administration of $1,500 to $3,000. These costs are tax-deductible and represent a fraction of the tax savings a well-designed plan produces.

Who is the best candidate for a cash balance plan?

Business owners, solo practitioners, and partners with stable, consistent income and few or no employees. The plan works best for high earners in their 40s and 50s who have been maxing their 401(k) and want to shelter more.

What happens to my cash balance plan if I sell my business?

The plan is portable. Your account balance belongs to you. When you terminate the plan, you can roll the balance into an IRA or another qualified retirement plan.

Curious whether a cash balance plan fits your situation? It depends on your specific income, age, entity structure, and goals — which is exactly what a strategy session is for. Book a free 15-minute discovery call at (619) 280-2700 or email info@RoadmapTax.com. We serve clients nationwide from our offices in San Diego, Frisco, Texas, and Panama City Beach, Florida.