Cash Balance Plans: How High-Earning Owners Shelter Six Figures a Year

What is a cash balance plan?

It is a defined benefit pension that behaves like a supersized 401(k). Each participant has a hypothetical account that grows two ways each year: a pay credit, a set dollar amount or percentage the employer contributes, and an interest credit, a guaranteed growth rate defined in the plan. Unlike a 401(k), the employer funds the promised benefit, and the contribution needed to fund it is what you deduct. That deduction is far larger than any defined-contribution plan allows.

Because it is a pension, an actuary certifies the funding each year, and the plan files a Form 5500. In exchange for that structure, the contribution ceilings dwarf a SEP or a Solo 401(k).

Why owners use it: it stacks on a 401(k)

A 401(k) with profit sharing caps the owner at $72,000 in 2026. For a business throwing off far more than the owner can shelter there, a cash balance plan is added alongside the 401(k), and the two are tested together. The owner captures the full 401(k), then layers a six-figure cash balance contribution on top. Combined, a high earner can often shelter $200,000 to $400,000 or more in a single year.

If you have not yet set the 401(k) layer, start with the small business retirement plans page and the SEP vs SIMPLE vs Solo comparison. The cash balance plan sits above whichever 401(k) design you land on.

The age factor: why older owners shelter the most

This is the part that surprises people. The cash balance limit is set to fund a target benefit by retirement, so the fewer years you have left to fund it, the larger this year's contribution can be. An owner in their early 60s can often shelter more than double what a 40-year-old can, at the same income.

Hypothetical illustration only, not a projection of actual results. Figures assume the stated inputs and returns, which are not guaranteed; your outcome depends on your contributions, investment returns, tax rates, and time horizon. Past performance does not guarantee future results.

These are round illustrations to show the shape, not quotes. The real number comes from an actuary using your age, income, and plan design.

Who it fits, and who it doesn't

A cash balance plan fits an owner with high, stable, predictable income who wants a deduction far beyond what a 401(k) allows, and who is willing to fund it consistently for at least several years. It works best when the owner is older than most of the staff, because the age-weighted math directs most of the contribution to the owner. Professional practices, consultants, and closely held businesses with strong margins are the classic fit.

It is a poor fit when income is lumpy or uncertain, when cash flow cannot support a required contribution in a down year, or when the workforce is large and young, which drives up the required employee contributions. For physicians specifically, I go deeper in the physician cash balance guide.

The tradeoffs to weigh

• A funding commitment. The contribution is largely required each year, so the income needs to be dependable. Plans can be amended, but not treated like an on-off switch.
• More administration. An actuary, a Form 5500, and annual testing with the paired 401(k). This is not a set-and-forget SEP.
• Employee cost. Eligible employees generally receive a contribution, often 5% to 7.5% of pay, as the price of directing so much to the owner.
• An exit plan. Balances are typically rolled to an IRA when the plan is frozen or terminated, so the plan has a life cycle you design up front.