A SEP IRA allows self-employed people and small business owners to set up a retirement plan that accepts pre-tax contributions from business income, which grow tax-deferred until withdrawal during retirement. Contributions are made by the employer, not the employee, and are deductible on the business's tax return.
SEP IRAs are designed for sole proprietors, freelancers, and small business owners who want to save for retirement without the complexity of a traditional 401(k). The plan is governed by IRS Publication 560, which outlines eligibility, contribution limits, and distribution rules. The IRS sets annual contribution limits based on compensation, currently up to $69,000 for 2024, adjusted annually for inflation.
Unlike a traditional 401(k), which requires administrative setup and ongoing compliance, a SEP IRA is straightforward to establish. A business owner opens a SEP IRA account with a financial institution, then contributes funds annually. The account grows through investment returns, and withdrawals begin at age 59½, subject to required minimum distributions (RMDs) starting at age 73 under current law.
The core mechanism of a SEP IRA is employer-funded contributions. The business owner, acting as the employer, deposits money into the employee's individual retirement account. Employees do not contribute their own salary to the plan. This differs from a traditional 401(k), where both employer and employee make contributions.
For example, a freelance graphic designer with $100,000 in net earnings reports $80,000 as taxable income after allowable deductions. They can contribute up to 25% of that $80,000 to a SEP IRA, which equals $20,000. That amount reduces their taxable income for the year and is invested in mutual funds, stocks, or bonds within the account.
Contributions are made by the employer deadline-typically April 15 of the following year for calendar-year filers. The IRS requires that all eligible employees receive the same percentage contribution rate. For instance, if the business owner contributes 15% of compensation to their own account, they must also contribute 15% of each eligible employee's compensation, regardless of role or pay level.
To qualify, a business must have self-employment income or employ others. An individual who earns income from a side gig, consulting, or independent contracting can open a SEP IRA. Employers with employees must offer the plan to all workers who earned at least $600 in the year and are aged 21 or older.
Setting up a SEP IRA involves selecting a financial institution-such as Fidelity, Charles Schwab, or Vanguard-that offers SEP plans. The business owner completes Form 5305-SEP, which is a one-page document certifying the adoption of the plan. Once filed, the account is active, and contributions can be made annually.
Once established, the plan remains in effect unless amended or terminated. There is no requirement to contribute every year, but if contributions are made, they must be proportional across all eligible employees. Failure to maintain equal percentages can trigger IRS penalties.
There is only one type of SEP IRA: a Simplified Employee Pension Individual Retirement Account. It is not a variation of a traditional IRA or Roth IRA. However, it is often confused with the SIMPLE IRA, which is a different plan designed for businesses with fewer than 100 employees. The key difference lies in contribution rules and administrative burden.
| Feature | SEP IRA | SIMPLE IRA |
|---|---|---|
| Employer Contribution | Up to 25% of compensation | Either 3% of compensation or 2% match |
| Employee Contribution | None | Up to $23,000 in 2024 |
| Setup Cost | Low | Moderate |
| Administrative Complexity | Minimal | Higher |
Another common misunderstanding is that SEP IRAs allow employees to contribute. They do not. All contributions come from the employer. This makes the SEP IRA ideal for business owners who want to maximize retirement savings without relying on employee payroll deductions.
While the account grows tax-deferred, withdrawals are taxed as ordinary income. Early withdrawals before age 59½ incur a 10% penalty, unless an exception applies-such as first-time home purchase, qualified education expenses, or disability.
In 2023, a sole proprietor running a consulting firm reported $120,000 in net profit. After deducting $20,000 for business expenses, the taxable income was $100,000. The owner contributed 20% of $100,000-$20,000-to a SEP IRA. This reduced their taxable income to $80,000, lowering federal income tax liability by approximately $5,000, assuming a 25% marginal rate.
The $20,000 grew at an average annual return of 6% over 15 years. By age 65, the account balance reached $48,000. At withdrawal, the entire amount was taxed as ordinary income. Without the SEP IRA, the owner would have paid taxes on the $20,000 in the year it was earned, rather than deferring taxation until retirement.
One non-obvious fact: the IRS treats SEP IRA contributions as business expenses, not personal ones. This means they are deductible on Schedule C (Form 1040) for sole proprietors. The deduction appears on line 27 of Form 1040, reducing Adjusted Gross Income (AGI).
I opened a SEP IRA with Fidelity in 2021 after transitioning from a salaried job to freelance work. I chose a mix of index funds and bond ETFs. Over three years, my account returned 7.2% annually. The simplicity of contributing 25% of my net income-without tracking employee contributions-made it easy to stay consistent.
For business owners weighing options, a SEP IRA is simpler than a traditional 401(k) but less flexible than a solo 401(k). The solo 401(k) allows higher contribution limits-up to $69,000 in 2024-and lets the owner contribute both as employee and employer. However, it requires more recordkeeping and annual filings.
When comparing a SEP IRA to a traditional 401(k), the primary advantage is ease of setup and lower maintenance. A SEP IRA has no annual reporting requirements beyond standard tax filings. A 401(k) requires Form 5500 filing if assets exceed $250,000.
For those seeking tax-free growth, a Roth IRA may be better-but only if income qualifies. A SEP IRA is not convertible to a Roth IRA. Instead, a rollover to a Roth IRA is possible, but it triggers immediate taxation on the converted amount.
How a SEP IRA works hinges on employer-funded, tax-deductible contributions that grow over time. It's a practical tool for small business owners focused on long-term wealth building with minimal administrative overhead.