Defined Benefit Plan Tax Deduction Strategy

Defined Benefit Plans allow some of the largest annual tax deductions available to business owners, sometimes exceeding $250,000 per year. This guide explains when they make sense.

The highest contribution ceiling. A defined benefit plan can provide an annual benefit of up to $275,000 at retirement (2024 limit, indexed for inflation). Working backward from that benefit, the annual contribution required to fund it can be $100,000 to $300,000 or more, depending on your age and years until retirement. Older business owners benefit most because they have fewer years to fund the same benefit.

Mandatory annual funding. Unlike a 401(k) or SEP-IRA where contributions are discretionary each year, a DB plan requires you to fund the actuarially determined contribution every year. If your business income drops significantly, you still owe the contribution. This inflexibility is the primary risk.

Best for stable, high-income businesses. The ideal candidate is a business owner over 45 with consistent income above $400,000 and few or no employees. Each employee added to the plan increases the funding obligation proportionally.

The tradeoff: DB plans require an enrolled actuary to calculate annual contributions and file required documents. Actuarial fees typically run $2,000-$5,000 annually. If your income fluctuates year to year, the mandatory funding requirement can become a burden rather than a benefit.