Business Owner’s Guide
For small business owners, retirement accounts are far more than vehicles for long-term savings. When structured properly, they can serve as powerful tools for tax planning, creditor protection, and tax-advantaged investment growth. Contributions to certain retirement plans may reduce current taxable income, enabling business owners to retain more of their earnings today while assets within the accounts grow on a tax-deferred or tax-free basis. Beyond the immediate tax benefits, retirement accounts encourage disciplined long-term investing and provide flexibility in how and when income is ultimately recognized in retirement. Used strategically, the right retirement plan can enhance financial security both during and after a business owner’s working years.
Despite the advantages, selecting the right type of retirement account can be challenging for small business owners. The optimal plan depends on a range of factors including business structure, income level, cash flow consistency, and whether the business has employees. Contribution limits, required employer contributions, administrative complexity, and long-term flexibility can vary significantly across account types. As a business grows or circumstances change, a retirement plan that once made sense may become inefficient or restrictive. As a result, careful evaluation and ongoing review are critical to ensure a retirement strategy continues to align with both the owner’s financial goals and the evolving needs of the business. Choosing the “best” retirement plan can be difficult, and the eligibility for the business owner for certain plan types can be consistently shifting based on the status and structure of the business.
This article will walk through some of the options currently available to business owners and will discuss the advantages, disadvantages, and important information to take into consideration when contemplating each retirement plan type.
Solo 401(k)
A Solo 401(k), or an Individual 401(k), is a retirement plan designed for self-employed individuals and business owners with no full-time employees other than a spouse. With its high contribution limits and flexible design, it is considered one of the most advantageous plans offered to business owners. However, Solo 401(k)s are limited by who can use them, and non-compliance issues can arise depending on the makeup of the account holder’s business.
The biggest advantage of a Solo 401(k) is its high contribution limits since the business owner can contribute both as the employee and as the employer. In 2026, business owners can contribute as an employee up to $24,500 (or $32,500 if age 50+) and as the employer up to 25% of compensation, or roughly 20% of net self-employment income, up to a combined maximum of $72,000 ($80,000 with catch-up). For participants ages 60-63, SECURE 2.0 permits an additional “super catch-up” contribution of up to $11,250, increasing the total potential employee deferral to as much as $35,750 (combined employee and employer contribution of $83,250) subject to plan provisions and Roth-only requirements for higher-income earners. Solo 401(k)s often allow both traditional (pre-tax) and Roth contributions, offer access to plan loans, and generally permit rollovers from other retirement accounts.
Administrative requirements are modest. However, once plan assets exceed $250,000, the owner must file Form 5500-EZ annually. Regardless of asset size, a final filing is required upon plan termination.
If you have self-employment income from a sole proprietorship, single-member LLC, partnership, S-corporation, or as an independent contractor or freelancer, then you may be eligible for a Solo 401(k). However, the requirement is that you must be the sole owner and employee of the business. The exception to this rule is that your spouse can become eligible too if they have any earned income from the business.
Even if you or your spouse are covered by a 401(k) at your W-2 job, you can still maintain a Solo 401(k) for your self-employed business or side hustle. The key rule is that employee deferrals are aggregated across all 401(k) plans, meaning the IRS limits how much you can personally defer in total each year. So, total employee contributions across all accounts are capped at $24,500 in 2026 (or $32,500 if age 50+). However, your Solo 401(k) also allows employer profit-sharing contributions which are calculated separately and based only on your business income. This means that even if your employee deferral limit is mostly used up by your employer plan, your Solo 401(k) can still shelter a significant amount of additional income through employer contributions.
Overall, a Solo 401(k) is one of the most powerful retirement savings tools for high-earning freelancers, consultants, and small business owners, offering the ability to help maximize tax-advantaged contributions while operating without employees. However, eligibility is tied to your business structure and, if your circumstances change or you add W-2 employees to the organization, your ability to maintain a Solo 401(k) may be affected. A regular 401(k) may need to be considered so that non-discrimination rules are followed.
SEP IRA
A SEP IRA or Simplified Employee Pension Individual Retirement Account is also a retirement plan designed for self-employed individuals and small business owners. However, unlike a Solo 401(k), a SEP IRA is designed for employers who also have non-spouse employees. Its simplicity and ease of administration make it one of the most accessible retirement plans for business owners, but contribution limits and plan rules differ significantly from a Solo 401(k).
The primary advantage of a SEP IRA is that it allows business owners to make substantial contributions for themselves and their employees, calculated as a percentage of compensation. In 2026, employers can contribute up to 25% of an employee’s compensation (or roughly 20% of net self-employment income for sole proprietors) with a maximum contribution of $72,000 per individual. Contributions are made on a pre-tax basis only, reducing taxable income in the year they are made, and the plan allows tax-deferred growth. Unlike a Solo 401(k), SEP IRAs do not permit employee deferrals, and there are no plan loans available, but Roth contributions are now permitted thanks to the passing of the Secure 2.0 Act in 2023.
One of the biggest benefits of a SEP IRA is its simplicity. There is no annual filing requirement, no Form 5500 to submit regardless of plan size, and administrative paperwork is minimal. Employers simply provide a uniform percentage contribution for all eligible employees, making it straightforward to manage.
Eligibility is broad: any business with self-employment income from a sole proprietorship, partnership, S-corporation, or LLC can establish a SEP IRA. Contributions must also be made proportionally for all eligible employees, generally those aged 21 or older with at least 3 of the last 5 years of service and earning at least $750 in compensation (2026). Because of this requirement, adding employees increases costs proportionally and may limit flexibility compared to a Solo 401(k).
Even if you or your spouse are covered by another retirement plan at a W-2 job, you may still contribute to a SEP IRA. However, unlike a Solo 401(k), SEP contributions are strictly employer contributions and do not allow elective deferrals, meaning the IRS limits on employee deferrals across other plans do not apply.
Overall, a SEP IRA is an excellent retirement savings tool for self-employed individuals and small business owners who want to make significant pre-tax contributions while helping to minimize administrative burdens. It is especially appealing for businesses with few or no employees or for those who prioritize simplicity over flexibility. However, because contributions must be made proportionally for all eligible employees, a growing business may find that a traditional 401(k) provides more control and higher contribution potential for the owner.
SIMPLE IRA
A SIMPLE IRA or Savings Incentive Match Plan for Employees Individual Retirement Account is a retirement plan designed for small businesses, including self-employed individuals, that have 100 or fewer employees. Its straightforward structure and low administrative burden make it one of the easiest employer-sponsored retirement plans to implement, but contribution limits are lower than other plans like Solo 401(k)s or SEP IRAs.
The primary advantage of a SIMPLE IRA is its simplicity and predictable contribution requirements. In 2026, employees can defer up to $17,000 of wages (or $21,000 if age 50+) on a pre-tax basis, and employers must either match contributions dollar-for-dollar up to 3% of compensation or make a 2% nonelective contribution for each eligible employee. Participants ages 60-63 are eligible for an enhanced SECURE 2.0 catch-up of up to $5,250, bringing the maximum employee deferral to $22,250. Unlike Solo 401(k)s, SIMPLE IRAs do not allow loans, but they do permit Roth contributions under the SECURE 2.0 Act.
Administrative requirements are minimal. SIMPLE IRAs do not require annual filings with the IRS, and plans can be established with a financial institution without a formal trust. Employers are responsible for notifying employees of the plan, setting up payroll deductions, and making required contributions; but there is no Form 5500 filing regardless of plan assets.
Eligibility is broad for small businesses. Any business with 100 or fewer employees who earned at least $5,000 in the preceding two years can establish a SIMPLE IRA. Employees are generally eligible to participate if they have earned at least $5,000 in compensation during any two prior years and are expected to earn at least $5,000 in the current year. Contributions must be made consistently for all eligible employees, ensuring fairness across the workforce.
Even if you or your spouse are covered by another 401(k) or retirement plan through a W-2 job, you may still participate in a SIMPLE IRA at your small business. Employee deferrals are subject to the plan limit, but employer contributions are in addition and are tax-deductible which can provide significant tax advantages for the business. While the contribution limits are lower than a Solo 401(k) or SEP IRA, the simplicity of setup and mandatory employer match can make it an attractive option for small business owners who want to provide retirement benefits for themselves and their employees.
Overall, a SIMPLE IRA is a highly accessible retirement savings tool for small business owners and self-employed individuals, offering a combination of employee deferrals and mandatory employer contributions while helping to minimize administrative burden. However, because contribution limits are lower than Solo 401(k)s or SEP IRAs, businesses seeking to maximize tax-advantaged savings may prefer those alternatives if they meet the eligibility requirements.
Traditional 401(k)
A Traditional 401(k) is a retirement plan commonly used by growing businesses to provide structured, tax-advantaged savings for both owners and employees. Unlike plans designed for solo entrepreneurs, a Traditional 401(k) is ideal for businesses that have employees or plan to hire, offering flexibility in contributions and incentives to attract and retain talent.
The primary advantage of a Traditional 401(k) is its high contribution potential and flexibility. In 2026, employees can contribute up to $24,500 ($32,500 if age 50+) on a pre-tax basis while employers can add matching or profit-sharing contributions, bringing the combined annual contribution limit to $72,000 ($80,000 with catch-up). For participants ages 60-63, SECURE 2.0 permits an additional “super catch-up” contribution of up to $11,250, increasing the total potential employee deferral to as much as $35,750 (combined employee and employer contribution of $83,250) subject to plan provisions and Roth-only requirements for higher-income earners. Contributions grow tax-deferred until withdrawal, and many plans also allow Roth contributions for tax-free growth. This combination of employee and employer contributions makes a Traditional 401(k) an excellent tool for helping to maximize retirement savings for both owners and staff.
While offering substantial benefits, Traditional 401(k)s require more administrative oversight than solo or simplified plans. Employers must maintain a formal plan document, hold plan assets in a trust, and comply with non-discrimination testing to ensure contributions and benefits are equitable for all employees. Annual filings such as Form 5500 may also be required depending on plan size. Despite these requirements, Traditional 401(k)s provide a structured framework that scales with a growing business.
Eligibility is determined by the plan’s rules, typically based on age and service requirements, and contributions must follow the plan terms. Employer contributions, whether matching or profit-sharing, are tax-deductible, reducing the business’s taxable income while incentivizing employees to save for retirement. This structure is particularly advantageous for businesses that anticipate growth as it allows owners to reward employees, enhance benefits packages, and maintain compliance as the workforce expands.
Overall, a Traditional 401(k) is a robust solution for small and growing businesses seeking to provide meaningful retirement benefits. While setup and administration are more involved than Solo 401(k)s, SEP IRAs, or SIMPLE IRAs; the plan’s combination of high contribution limits, optional Roth features, and scalable employer contributions makes it ideal for businesses looking to help maximize retirement savings and support a growing employee base.
Traditional IRA or Roth IRA
Not every individual wants to establish a retirement plan tied to a business. In these cases, a Traditional IRA or Roth IRA may be a simple solution. These account types offer a simple, flexible way to save for retirement without the administrative responsibilities of a business-sponsored plan.
With a Traditional IRA, contributions are made with pre‑tax dollars, allowing earnings to grow tax‑deferred. Withdrawals in retirement are taxed as ordinary income. The ability to deduct contributions depends on income and whether the account owner or their spouse is covered by a workplace retirement plan. If either spouse is covered by such a plan, the deduction may be reduced or phased out based on filing status and income. If neither spouse is covered, the phase‑out rules do not apply. For single taxpayers covered by a workplace retirement plan, the phase-out range is between $81,000 and $91,000. For married couples filing jointly, if the spouse making the IRA contribution is covered by a workplace retirement plan, the phase-out range is between $129,000 and $149,000. For an IRA contributor who is not covered by a workplace retirement plan and is married to someone who is covered, the phase-out range is between $242,000 and $252,000. Finally, for a married individual filing a separate return who is covered by a workplace retirement plan, the phase-out range is between $0 and $10,000.
A Roth IRA, by contrast, is funded with after‑tax dollars, but qualified withdrawals are entirely tax‑free, making it a valuable tool for long‑term tax planning. Eligibility to contribute is limited by income. For single filers and heads of household, contributions phase out between $153,000 and $168,000, and for married couples filing jointly, between $242,000 and $252,000.
For 2026, the contribution limit for both Traditional and Roth IRAs is $7,500 per year ($8,600 if age 50+).
IRAs are appealing for anyone with earned income, offering investment flexibility, low administrative burden, and a way to start saving for retirement immediately without needing a business-sponsored plan.
Overall, Traditional and Roth IRAs provide a straightforward, low-maintenance option for retirement savings. While contribution limits are lower than Solo 401(k)s, SEP IRAs, SIMPLE IRAs, or Traditional 401(k)s; IRAs are ideal for anyone looking to save independently, maintain control over their investments, or complement other retirement accounts.
Conclusion
Choosing the right retirement plan ultimately depends on the structure of your business, your income level, and how much flexibility and administrative responsibility you are willing to take on. Solo 401(k)s offer unmatched contribution potential and flexibility for owner-only businesses, while SEP IRAs and SIMPLE IRAs provide streamlined, lower-maintenance options for small employers willing to make consistent contributions for eligible employees. As businesses grow, a Traditional 401(k) can become the most scalable solution, allowing employers to attract and retain talent while offering meaningful retirement benefits.
For individuals who prefer not to maintain a retirement plan through their business, Traditional and Roth IRAs remain accessible and valuable tools for nearly anyone with earned income, though contribution limits and income-based eligibility rules must be considered. No single plan is universally “best,” and the most effective strategy is one that aligns with your current situation while allowing room for future growth. Reviewing your options regularly and adjusting as your income, workforce, and goals evolve can help ensure your retirement strategy remains both tax-efficient and sustainable over time.
The table below summarizes the key differences across each retirement plan, offering a quick reference to help identify the option best aligned with your business structure and savings goals.
A number of simplifying assumptions have been made and details omitted for purposes of analysis. Consequently, readers are encouraged to seek competent tax counsel and not rely solely on any of the statements made herein. Any advice concerning U.S. federal tax issues contained in this communication is not intended or written to be used for the purpose of (1) avoiding penalties under the Internal Revenue Code or (2) promoting, marketing or recommending to another party any transaction or tax-related matter addressed herein.
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