SEP IRA: Retirement Plan Guide for Self-Employed and Small Business
By: Conor Keenan | Last updated: April 21, 2026
Conor Keenan, AWMA®, is the Co-Founder of CompareAccounts. An Accredited Wealth Management Advisor™ professional with over a decade of experience covering consumer banking and investing trends, his work has appeared in The Wall Street Journal, Reuters, and Yahoo Finance.
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In This Article:
In This Article
- What Is a SEP IRA and How Does It Work?
- Who Is Eligible for a SEP IRA?
- What Are the SEP IRA Contribution Limits?
- What Are the Tax Benefits of a SEP IRA?
- How Do You Set Up a SEP IRA?
- What Investment Options Are Available?
- What Are the SEP IRA Withdrawal Rules and RMDs?
- How Does a SEP IRA Compare to a Solo 401(k) and SIMPLE IRA?
- What Are the Pros and Cons of a SEP IRA?
- Who Benefits Most from a SEP IRA?
- Frequently Asked Questions
A SEP IRA (Simplified Employee Pension Individual Retirement Account) is one of the most powerful retirement savings tools for self-employed individuals and small business owners. For instance, a SEP IRA allows business owners to save far more than a standard traditional IRA with minimal administration. This guide covers how SEP IRAs work, who qualifies, how contributions are calculated, and how they compare to other small-business retirement plans. Consequently, you will have the knowledge needed to maximize your tax-advantaged savings.
Key Takeaways
- The annual SEP IRA contribution limit is the lesser of 25% of compensation or the IRS maximum dollar limit for that tax year.
- Furthermore, only employers fund a SEP IRA—employees cannot make their own salary deferral contributions.
- The exact same contribution percentage must apply to every eligible employee, including the business owner.
- Contributions are immediately tax-deductible and grow tax-deferred until withdrawal.
- Above all, a SEP IRA can be established and funded retroactively, up to the tax filing deadline including extensions.
- Penalty-free withdrawals begin at age 59½; conversely, Required Minimum Distributions (RMDs) begin at age 73.
What Is a SEP IRA and How Does It Work?
A SEP IRA is an employer-sponsored retirement account that functions similarly to a traditional IRA but with much higher contribution limits designed specifically for business owners. The “simplified” in the name reflects the plan’s incredibly low administrative burden. For instance, there are no annual IRS filing requirements for most plan sponsors, and setup requires little more than a one-page agreement. Contributions are made entirely by the employer directly into individual IRA accounts held in each eligible employee’s name. As a result, accounts feature immediate full vesting and no ongoing management responsibility for the employer after deposits are made.
Furthermore, contributions are discretionary. A business owner can contribute as much as 25% of each eligible employee’s compensation (up to the annual IRS cap) in a profitable year. Alternatively, they can contribute nothing at all if the business has a slow year. Therefore, this flexibility makes a SEP IRA particularly attractive to freelancers and business owners with highly variable income.
Who Is Eligible for a SEP IRA?
Any business entity—sole proprietorships, partnerships, S corporations, C corporations, and LLCs—can establish a SEP IRA. Self-employed individuals with no employees qualify as both the employer and the employee, making this one of the simplest retirement plans for independent contractors.
When a business has employees, all who meet the following IRS eligibility thresholds must be included in the plan:
- Age: The employee must be at least 21 years old.
- Service (the “3-of-5 rule”): The employee must have worked for the business during at least 3 of the last 5 years.
- Minimum compensation: The employee must have earned at least the IRS minimum compensation threshold during the tax year.
Employers can choose to apply less restrictive standards—for example, allowing any employee who earns compensation to participate immediately. However, they cannot set stricter requirements than those listed above. The exact same eligibility rules apply to the owner as to any other employee; consequently, owners participate on the same terms as their workforce.
What Are the SEP IRA Contribution Limits?
For any given tax year, employers may contribute up to the lesser of 25% of an eligible employee’s compensation or the annual IRS maximum dollar limit. In addition, the IRS caps the total compensation amount that can be factored into this 25% calculation. SEP IRAs do not permit catch-up contributions—unlike a traditional IRA where older workers can add extra funds. Therefore, participants face a flat limit regardless of their age.
Contribution Examples
If an employer applies a 10% contribution rate and one employee earns $80,000, that employee’s SEP IRA receives an $8,000 contribution. Most importantly, the exact same 10% rate must apply to every eligible employee, including the business owner.
Self-Employed Calculation
Self-employed individuals face a slightly different calculation because the contribution is based on net self-employment (SE) income. This is calculated as gross business earnings minus allowable deductions, including half of the self-employment tax and the SEP contribution itself. In practice, the effective maximum contribution rate works out to approximately 20% of net SE income (not 25%), due to this circular calculation. For example, a sole proprietor with $100,000 in net SE income can contribute roughly $18,587. Always consult a tax professional for the precise calculation based on your specific business structure.
| Parameter | Rule Details |
|---|---|
| Maximum Contribution (Employer) | Lesser of 25% of compensation or the annual IRS limit |
| Percentage of Compensation Cap | 25% strictly enforced |
| Employee Deferrals | Not permitted |
| Catch-Up Contributions (Age 50+) | Not permitted under SEP rules |
What Are the Tax Benefits of a SEP IRA?
SEP IRA contributions offer two significant tax advantages: immediate deductibility and long-term tax-deferred growth.
Firstly, employer contributions are fully deductible on the business’s federal income tax return. For sole proprietors, the deduction appears on Schedule C, directly reducing both income tax and self-employment tax. For corporations, it reduces overall taxable business income.
Secondly, funds inside the SEP IRA grow tax-deferred at competitive market rates. Dividends, interest, and capital gains accumulate without being taxed each year. Ultimately, taxes are paid only when the account holder takes a distribution, at which point the amounts are treated as ordinary income.
Furthermore, the SECURE 2.0 Act introduced an optional Roth SEP feature. This means employers can designate contributions as Roth, resulting in the money being taxed upfront while qualified withdrawals in retirement remain tax-free. However, not all financial institutions offer this option yet. For a deeper comparison, review the Roth IRA guide.
How Do You Set Up a SEP IRA?
Setting up a SEP IRA involves three straightforward steps and typically takes far less time than establishing most other retirement plans.
- Complete a written SEP agreement. Use IRS Form 5305-SEP (Simplified Employee Pension—Individual Retirement Accounts Contribution Agreement). This one-page form is not filed with the IRS; instead, it must be kept on file and provided to every eligible employee with a standard disclosure statement.
- Open individual SEP-IRA accounts. Next, open a SEP-IRA for each eligible employee (including the owner) at a qualifying bank, brokerage, or insurance company. Each account is held strictly in the individual employee’s name.
- Fund the accounts before the deadline. Finally, deposit contributions by the business’s federal tax return due date including any approved extensions.
A key advantage of the SEP IRA is its retroactive setup window. Specifically, a business can establish and fund a SEP IRA for a prior tax year right up to the return due date. Consequently, this gives business owners a valuable last-minute tax planning option. For personalized guidance, consider working with a financial advisor.
What Investment Options Are Available in a SEP IRA?
Because each participant holds their own IRA account at a financial institution, the investment options in a SEP IRA are essentially identical to those available in any traditional IRA at that same institution. Therefore, this broad flexibility is one of the plan’s key advantages over standard employer-sponsored plans.
Common options include stocks, ETFs, mutual funds, bonds, CDs, and annuities. In addition, self-directed SEP IRAs held with a specialized custodian may also allow alternative assets such as real estate and private equity. However, these alternative assets carry greater complexity and strictly enforced IRS prohibited-transaction rules. Ultimately, participants make their own investment decisions; the employer has zero control over individual accounts once contributions are deposited.
What Are the SEP IRA Withdrawal Rules and RMDs?
SEP IRAs follow the exact same distribution rules as traditional IRAs. Participants can take withdrawals at any time, but the timing of those withdrawals ultimately determines whether severe penalties apply.
Account holders age 59½ or older can withdraw any amount without penalty; as expected, all distributions are taxed as ordinary income. Conversely, withdrawals before 59½ are generally subject to a 10% early-withdrawal penalty on top of standard income taxes. The IRS will waive the 10% penalty in certain specific cases, such as death or total disability, qualified higher-education expenses, and first-time home purchases up to a specific lifetime limit.
Required Minimum Distributions (RMDs)
SEP IRA holders must begin taking required minimum distributions (RMDs) at age 73 (as updated by SECURE 2.0). The very first RMD is due by April 1 of the year after reaching 73; subsequently, all future RMDs are due by December 31 each year. The amount is calculated by dividing the prior year-end balance by an IRS life expectancy factor. Missing an RMD triggers a massive excise tax penalty on the shortfall. Unlike Roth IRAs, SEP IRAs offer absolutely no provision to avoid RMDs.
How Does a SEP IRA Compare to a Solo 401(k) and SIMPLE IRA?
The SEP IRA, Solo 401(k), and SIMPLE IRA are the three leading retirement plan options for self-employed individuals and small business owners. Each suits entirely different organizational structures and financial goals.
| Feature | SEP IRA | Solo 401(k) | SIMPLE IRA |
|---|---|---|---|
| Who can open it | Any business entity; self-employed | Self-employed with no employees (spouse exception) | Businesses with 100 or fewer employees |
| Employee Contributions | Not permitted | Yes (up to IRS deferral limit) | Yes (up to SIMPLE IRS limit) |
| Total Contribution Cap | High (IRS maximum) | High (IRS maximum + catch-up) | Moderate (Deferral + match) |
| Participant Loans | Not permitted | Often permitted | Not permitted |
SEP IRA vs. Solo 401(k)
Both plans share extremely high total contribution ceilings. However, a Solo 401(k) uniquely allows employee deferrals on top of employer contributions, enabling maximum contributions at lower income levels. For instance, a self-employed person earning a modest net income can contribute far more to a Solo 401(k) than a SEP IRA. Conversely, a Solo 401(k) is strictly limited to owners with no employees (other than a spouse). Therefore, the SEP IRA remains the natural choice for any growing business with a workforce.
What Are the Pros and Cons of a SEP IRA?
Pros
- High contribution ceiling. The maximum limit drastically outperforms most standard retirement accounts.
- Flexible contributions. Employers can contribute anywhere from 0% to 25% each year, with zero penalty for skipping a year entirely.
- Simple administration. There are no mandatory annual IRS filings required; furthermore, setup involves just one form.
- Extended setup deadline. A SEP IRA can be established and funded well after the tax year ends, up to the filing deadline.
- Immediate vesting. All participant contributions vest fully from day one.
Cons
- Employer-only contributions. Employees cannot defer their own salary, thus limiting the plan’s appeal for workers wanting to save independently.
- Proportional matching rules. Generous owner contributions automatically trigger proportional mandatory contributions for all eligible staff, heavily raising business costs.
- No catch-up contributions. Workers age 50 and older face the exact same ceiling as younger participants.
- No participant loans. Unlike some 401(k) structures, SEP IRA holders cannot borrow money from their balances.
Who Benefits Most from a SEP IRA?
A SEP IRA tends to deliver the greatest possible benefit to very specific types of business owners and workers.
- Freelancers and contractors with strong, highly variable income seeking a large pre-tax deduction.
- Sole proprietors and single-member LLCs who prioritize minimal paperwork and no mandatory annual contributions.
- Small business owners with few employees who can save generously without triggering unmanageable staff contribution expenses.
- High-earning business owners who exceed standard Roth IRA income limits and need a substantial pre-tax vehicle.
See More Investment Guides
- What Is an IRA — Understand the basics of individual retirement accounts.
- What Is a Roth IRA — Learn how tax-free growth works with a Roth IRA.
- What Is a Brokerage Account — Explore how taxable brokerage accounts operate.
- RMD Rules — Get a clear explanation of required minimum distributions.
Frequently Asked Questions
Can a self-employed person with no employees open a SEP IRA?
Yes. Self-employed individuals with no employees—including sole proprietors, independent contractors, and single-member LLC owners—are fully eligible to open and fund a SEP IRA. In this scenario, the business owner acts as both the employer and the sole participant. Furthermore, contributions are based on net self-employment income, with the effective maximum rate working out to approximately 20% of net earnings up to the annual IRS limit.
What is the deadline to establish and fund a SEP IRA for a given tax year?
A SEP IRA can be established and funded retroactively as late as the business’s federal tax return due date, including any approved extensions. For instance, sole proprietors usually have until mid-April (or mid-October with an extension) of the following year to finalize their contributions. Consequently, both plan setup and funding must be completed by the applicable deadline to successfully claim the deduction.
Does a SEP IRA have required minimum distributions (RMDs)?
Yes. SEP IRAs are strictly subject to the exact same RMD rules as traditional IRAs. Therefore, account holders must begin taking RMDs by April 1 of the year after they turn 73, with subsequent RMDs due by December 31 each year. Failing to take a full RMD triggers a massive excise tax penalty on the exact shortfall amount. For more information, review the RMD rules guide.
Can an employer contribute different amounts to different employees’ SEP IRAs?
No, not in terms of the underlying contribution rate. The IRS strictly requires that the exact same percentage of compensation be applied to every eligible employee’s account, including the business owner. Because employee compensation varies, the actual final dollar amounts will logically differ, but the rate must remain uniform. However, employers can legally change the percentage from year to year, or skip contributions entirely, provided the same rate applies to all eligible participants for that specific year.
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