How to Set Up a Cash Balance Plan, Step by Step

What is a cash balance plan, and why can't I open one online like a 401(k)?

We get asked that a lot. So instead of starting with the IRS rules, let's walk through it with one business owner.

Say you're Dana. (Dana's made up, but we have some version of this conversation every tax season.) You're 55, you own a physical therapy practice in Westerville with six employees, and the practice keeps having good years. It's March, your CPA just sent over the tax estimate, and you read it twice to make sure it was right.

You're already maxing out your 401(k). So that night you ask AI how to lower your taxes, and it comes back with "you may want to look into a cash balance plan." Okay... what is that? And is it too late to do anything about last year?

Why a cash balance plan lets you save so much more

Start with the 401(k), because there are two limits there and they get mixed up all the time.

The one you've probably heard is $24,500 for 2026. That's what any employee can put in from their own paycheck.

As the owner, though, you wear two hats. You're an employee, so you get that $24,500 like everyone else. You're also the employer, so the business can put money into your account on top of it, usually as profit sharing. Your paycheck money and the business's money together can add up to $72,000 a year. Once you're 50 you can add catch-up contributions on top of that ($8,000, or $11,250 if you're 60 to 63).

That's where Dana is. Her 401(k) is full for the year, even though the practice just had its best year ever.

A cash balance plan works the other way around. Instead of capping what goes in each year, the IRS caps how much the plan can pay you once you retire. An actuary then works backwards from that to figure out how much needs to go in each year. The closer you are to retirement, the fewer years there are to get there, so each year's deposit can be bigger.

So what does that mean for Dana? At 55, her 401(k) tops out at $80,000. That's $32,500 from her paycheck (with the catch-up, which at her pay has to go in as Roth) plus $47,500 of profit sharing from the practice. If she pays herself at the IRS pay limit, a cash balance plan could let her put in up to roughly $290,000 more.

There's one trade-off. Once a business has both plans, a combined deduction limit usually holds profit sharing for everyone to about 6% of the practice's payroll. We've shown Dana's share at 6% of her pay, $21,600, and the actuary works out the exact split. The cash balance plan more than makes up for it.

She doesn't have to go to the max, though. Say she and her CPA land on $150,000 a year in the cash balance plan, an amount the practice can fund without sweating it. That takes her from $80,000 a year to about $204,100.

What a cash balance plan can save you in taxes

The practice generally deducts the deposit, and the money grows tax-deferred until she retires, when it can usually roll into an IRA.

Counting the smaller profit sharing, the practice deducts about $124,100 more than it did before. In the 37% federal bracket, that's about $45,900 less in federal income tax that year. Think about that for a second... and it can happen every year the plan is funded. She'll pay tax on the money when she takes it out in retirement, ideally at a lower rate than she's paying now. (Dana's numbers are hypothetical and federal only. Yours depend on your state and your plan design.)

Her six employees get something too, usually around 5% to 7.5% of pay through the practice's 401(k). That cost is part of the design, and the actuary shows it up front.

So is it worth the extra work? For owners with steady profits it often is, and the design study shows you the numbers before you commit to anything.

Why you can't set up a cash balance plan yourself

A 401(k) can usually be set up with a provider's standard paperwork. A cash balance plan takes a small team, including an actuary, and it all comes back to that backwards math.

Every year, the plan adds a set rate of growth to each person's balance, called the interest crediting rate. The business is on the hook for that rate. If the investments earn less, the business puts in more over the next few years to close the gap. If they earn a lot more, the plan can end up with more than it's allowed to pay out, and getting that extra money back out is heavily taxed. So each year an actuary looks at where the account stands and sets the range the business can deposit, and the IRS requires the actuary to sign off on it.

That yearly check-in is the maintenance. A third party administrator (TPA) handles the plan documents and the government filings, the actuary handles the math, your CPA handles the deduction, and our Workplace Retirement team coordinates all of it and invests the money. We invest with the goal of earning that set rate after our fee, and that's the number we measure ourselves against. Returns aren't guaranteed, which is why these plans are usually invested more conservatively than your 401(k).

TPA and actuary fees are billed by the TPA, separately from our fee.

How to set up a cash balance plan, step by step

1. Design

We pull the practice's payroll info (everyone's age, pay and hire date) and send it to the actuary. The actuary comes back with a design study that shows what Dana could put in, what each of her employees would get, and what the practice would need to fund each year.

2. CPA review

Dana and her CPA pick the version that fits the practice's cash flow, and the CPA confirms how the deduction lands on her return. This is also where she commits. Tax rules require a plan like this to be set up as permanent, and three to five years of funding is a common working minimum. It can be changed or frozen later if the business changes, though benefits already earned can't be taken back.

3. Plan documents

The TPA writes the plan's legal documents and Dana signs them. They have to be signed by the tax deadline for the year the plan covers, and since it's already March, the clock is running.

4. Plan account

We open an account at Altruist in the plan's name. The money belongs to the plan, kept separate from Dana and from the practice.

5. Fund and invest

The practice makes its deposit, somewhere inside the range the actuary set, and we invest it.

From then on, the same loop runs every year. The actuary sets a new deposit range, the TPA files the plan's yearly return, and we review the plan with Dana and her CPA.

How late you can set up a cash balance plan for last year

Back to Dana's question from March. Is it too late to do anything about last year?

Nope. A business can set up a brand-new plan after the year is over and still count it for that year, as long as the plan is signed by the business's tax filing deadline, extensions included. If Dana wants the deduction for last year, the deposit has to be in by then too.

Her practice is a calendar-year S corporation (partnerships run on the same dates), so its return is due March 15. Her CPA files an extension, which pushes that to September 15. So Dana has about six more months to get the whole thing done. For a 2026 plan, that's September 15, 2027.

There's one more date running in the background. The plan has its own funding deadline, 8½ months after the year ends, and for a calendar-year business that's also September 15. If your business is a C corporation or a sole proprietorship, your extended return isn't due until October 15, but that September 15 funding date still comes first. Treat September 15 as the finish line.

Two places owners get tripped up:

• No extension, no extra time. Without one, Dana's window would have closed on March 15, the same week she opened that tax estimate.
• A new 401(k) can't go back in time. If you don't have a 401(k) yet, salary deferrals only start once it's set up, though profit sharing can still count for last year. A sole proprietor with no employees gets one exception and can make first-year deferrals up to the original, unextended return due date.

Reading this before December 31? Even better. Starting before year-end lets the business spread deposits across the year instead of writing one big check in September.

Dana's version of this ends with a plan signed over the summer, a deposit in before September 15, and a tax bill a lot smaller than the one she read twice back in March.

ClearMind Capital's Workplace Retirement team, Austin Wolfe and Joe Anderson, sets up and manages cash balance plans for business owners in Columbus, across Ohio and nationwide. If you want to see your own numbers, book a call with them and they'll run a design study with you and your CPA. Not sure yet? Our cash balance plan fit check takes a couple of minutes, and our cash balance plans page has more on how they work.

Common questions

Can AI set up a cash balance plan for me?

An AI tool can explain how a cash balance plan works and give you a rough idea of whether it might fit. It can't set one up. The plan needs signed legal documents, an account in the plan's name, and an enrolled actuary who calculates and signs off on the deposit every year using your team's ages and pay. A rough AI estimate is a fine place to start the conversation with your CPA and a plan team.

Who is a cash balance plan a good fit for?

Owners with steady, high profits who are already maxing out the 401(k) and want to put away more, especially in their 40s, 50s and 60s. It fits professional practices like medical, dental, legal and consulting firms well, along with other profitable small businesses. Profits that swing a lot from year to year make it harder, since the plan expects regular funding.

Do I need a 401(k) to have a cash balance plan?

If you have employees, almost always. The cash balance plan is usually paired with a 401(k) and profit sharing so the combined plan passes IRS testing, which is also what lets the owners put away the most. If you're still deciding on the base plan, start with should my Ohio business start a 401(k).

What happens if the business has a bad year?

The deposit has to fall inside the range the actuary sets, and that range has a minimum. A good design leaves room for uneven years, and the plan can be changed or frozen going forward if the business changes for good. Tell us before the slow year shows up, while there are still options.

Written byAustin Wolfe & Joe AndersonClearMind Capital | Workplace RetirementView bio →

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