Best Retirement Plans for Small Business Owners

If you run a small business, one of the most impactful financial decisions you’ll make has nothing to do with revenue or hiring. It’s the retirement plan you set up for yourself and, potentially, your employees.

The right plan can dramatically reduce your tax bill, build long-term wealth, and even help attract and retain good people. The wrong one, or worse, none at all, quietly costs you money every year.

There’s no single best answer. The right plan depends on how your business is structured, how many employees you have, how much income you want to shelter, and how much complexity you’re willing to manage. Here’s a breakdown of the three most common options.

The SEP IRA: simple, flexible, and employer-funded

A SEP IRA (Simplified Employee Pension Individual Retirement Account) is one of the easiest retirement plans to set up. There’s minimal paperwork, no annual IRS filing requirements, and contributions are completely flexible.

You decide how much to contribute each year, and you can change that amount or skip a year without penalty.

Contributions are made by the employer, not the employee. Whatever percentage you contribute for yourself, you must contribute the same percentage for every eligible employee.

That equal-percentage rule makes the SEP ideal for solo operators or businesses with very few employees. If it’s just you or you and a spouse, the SEP offers high contribution limits and virtually no administrative burden.

Add a larger team, and contributing meaningfully for yourself means doing the same for everyone, which gets expensive fast.

Under the SECURE 2.0 Act, employers can now allow employees to designate contributions as Roth, meaning money goes in after-tax and grows and comes out tax-free in retirement. Not every provider has implemented this yet, so confirm availability before assuming the option is on the table.

One limitation to know: SEP IRAs have no catch-up contributions for workers age 50 and older. If maximizing savings in your final working years is a priority, that gap matters.

On the flip side, the SEP has the most forgiving deadline of any plan on this list. You can establish and fund a SEP as late as your tax filing deadline, including extensions, giving you time to decide after the year is already over.

The SIMPLE IRA: built for small teams

A SIMPLE IRA (Savings Incentive Match Plan for Employees) is designed for businesses with up to 100 employees. Unlike the SEP, contributions come from both sides: employees defer part of their salary, and the employer provides a match or flat contribution.

There are two employer contribution options. The first is a dollar-for-dollar match on employee contributions, up to 3% of their salary. The second is a flat 2% nonelective contribution for every eligible employee, whether or not they defer anything.

The SIMPLE has historically had lower contribution limits than the other plans on this list, but SECURE 2.0 changed that for smaller employers. Businesses with 25 or fewer employees can now contribute up to $18,100 per year in 2026, compared to $17,000 for larger employers.

Like the SEP, the SIMPLE can now offer a Roth option under SECURE 2.0, though it requires the employer and its IRA provider to opt in.

Two quirks worth knowing. First, if an employee withdraws from a SIMPLE IRA within the first two years of participation, the standard 10% early withdrawal penalty increases to 25%. Second, a new SIMPLE IRA must be established by October 1 of the year you want it to take effect.

Miss that deadline and you’re waiting until next year.

The Solo 401(k): maximum flexibility for owner-only businesses

A Solo 401(k) is available to self-employed individuals and business owners with no full-time employees other than a spouse. It’s the most flexible plan on this list, and for many solo operators, the most powerful.

The reason comes down to how contributions work. A Solo 401(k) lets you contribute as both the employee and the employer.

You can make salary deferrals on the employee side and profit-sharing contributions on the employer side, which allows you to shelter significantly more income than a SEP or SIMPLE in many scenarios.

The Roth option is well-established here and widely available across most providers, making it more accessible in practice than the newer Roth SEP and Roth SIMPLE options.

The trade-offs are worth understanding. Once your plan balance exceeds $250,000, you must file Form 5500-EZ with the IRS annually.

More importantly, employee deferral elections must be made by December 31 of the tax year you intend to contribute. However, for sole proprietors and single-member LLCs, a new rule allows you to establish a new plan and make your first year’s employee deferrals as late as your April 15 tax filing deadline.

Employer profit-sharing contributions can follow the tax filing deadline, but if you miss December 31 to establish the plan for the first time, you may lose the ability to make employee deferrals for that year entirely. Unlike the SEP, this one rewards early planning.

How to decide

A few questions will point you in the right direction. Do you have employees beyond a spouse? The SEP and SIMPLE are built for that.

Are you a solo operator over 50 trying to maximize savings before retirement? The Solo 401(k) wins, since it’s the only plan here with meaningful catch-up contribution options.

Note that for 2026, if you earned more than $150,000 in the previous year, the IRS now requires all catch-up contributions for those age 50 and older to be made on a Roth basis. Are you looking for the simplest possible setup with the most flexibility around timing? The SEP is the lightest lift.

Do you want to offer employees a retirement benefit without heavy administrative cost? The SIMPLE was designed for exactly that.

The right plan today may not be the right plan in five years. As your business grows, your team expands, or your income changes, it’s worth revisiting this decision with a tax professional who knows your full picture.

Sources:

https://www.investopedia.com/ask/answers/100314/do-i-need-employer-set-401k-plan.asp

https://www.investopedia.com/ask/answers/102714/what-are-main-differences-between-simplified-employee-pension-sep-ira-and-simple-ira.asp

This information is provided as general information and is not intended to be specific financial guidance.  Before you make any decisions regarding your personal financial situation, you should consult a financial or tax professional to discuss your individual circumstances and objectives.

The source(s) used to prepare this material is/are believed to be true, accurate and reliable, but is/are not guaranteed.