FAQs
The best retirement account for a self-employed business owner in 2026 is typically the Solo 401(k). It offers the highest combined contribution limit — up to $70,000 per year ($77,500 if age 50 or older) — and allows both pre-tax and Roth contributions. However, the Solo 401(k) requires that you have no full-time employees other than a spouse. For those with employees, a SEP-IRA or SIMPLE IRA may be more practical and cost-effective.
In 2026, a business owner can contribute up to 25% of their net self-employment income to a SEP-IRA, with a maximum dollar cap of $70,000. employment earnings. — giving you until October 15, 2027, for the 2026 tax year.
Generally, a business owner cannot contribute to both a SEP-IRA and a Solo 401(k) for the same business in the same tax year, as the IRS considers this double-dipping on employer contributions. However, if you own two separate businesses, you may maintain different plan types for each. Always consult a tax professional before attempting to combine accounts, as the rules are complex and errors can trigger IRS penalties.
Yes. Retirement account contributions are tax-deductible for most US business owners. SEP-IRA and Solo 401(k) employer contributions are deducted on Schedule 1 of Form 1040 as an adjustment to income — meaning they reduce your adjusted gross income before itemizing or taking the standard deduction. Employee elective deferrals to a Solo 401(k) are also pre-tax. Roth contributions, while not deductible, grow tax-free and are withdrawn tax-free in retirement.
If a business owner over-contributes to a retirement account, the IRS imposes a 6% excise tax on the excess amount for each year it remains in the account uncorrected. Ongoing excess contributions compound the problem, so accurate calculation of contribution limits each year is essential.
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