In 2026, the IRS has once again increased the ceilings for retirement savings. If you aren’t strategically splitting your contributions between your employee deferrals and your company profit-sharing, you are leaving wealth on the table.
The Power of the Solo 401(k)
While a SEP IRA is a popular choice for simplicity, the Solo 401(k) is the undisputed champion for the aggressive solo-preneur. Here is why the math favors the 401(k) structure in 2026:
- The Employee Portion: As an employee, you can defer up to 100% of your W-2 salary, up to $24,500. If you are 50 or older, you can add an $8,000 catch-up ($11,250 if you are 60-63).
- The Employer Portion: Your company can then contribute an additional 25% of your W-2 salary as a profit-sharing contribution.
- The Total Limit: For 2026, the combined total cannot exceed $72,000 (excluding catch-ups).
Compare this to a SEP IRA, where you are limited only to the 25% employer side. To hit the $72,000 max in a SEP, you’d need a salary of $288,000. In a Solo 401(k), you could hit that same max with a much lower, more tax-efficient salary.
Strategic Allocation: Pre-Tax vs. Roth
Thanks to the SECURE 2.0 Act, many Solo 401(k) plans now allow for Roth Employer Contributions. This means you can choose to pay the taxes now on your company’s portion so that the money grows 100% tax-free forever.
Choosing between Traditional (pre-tax) and Roth is a game of Tax Arbitrage. If you are in a high tax bracket now but expect to be in an even higher one during retirement (or if you believe tax rates will rise globally), the Roth option is a massive “future-proofing” move for your estate.
The “Catch-Up” Advantage
If you are nearing the finish line, 2026 offers unique opportunities. The “Super Catch-Up” for those aged 60–63 allows for an extra $11,250 in employee deferrals. This is the government’s way of letting you make up for lost time. By maximizing both sides of the S-Corp equation, a couple working together in a business can potentially shield over $150,000 of household income from taxes in a single year.
Optimize Your Retirement Split
Don’t let your retirement strategy be an afterthought. The Cortex S-Corp Investment Optimizer helps you find the “Goldilocks” balance between employee deferrals and company profit-sharing.
We’ll calculate exactly how much you can contribute based on your 2026 salary and show you the long-term impact of choosing Roth vs. Traditional. Maximize your savings and protect your legacy.