SEP-IRA Contribution Limits

The Simplified Employee Pension IRA (SEP-IRA) is the simplest, lowest-administrative-burden retirement plan available to self-employed individuals and small business owners — and, for high-earning self-employed workers, the highest contribution limit of any easily accessible retirement vehicle. Under 26 U.S.C. § 408, contributions are made entirely by the employer (no employee contributions): self-employed individuals can contribute up to 25% of net compensation (calculated as 20% of net SE income after the self-employment tax deduction), capped at $72,000 in 2026. For a sole proprietor with $200,000 in net SE income, that's roughly $37,400 in tax-deductible contributions — far exceeding a traditional IRA's $7,000 limit. SEP-IRAs require no annual IRS filing, no vesting schedules, and can be opened and funded as late as the extended tax return due date (October 15 for sole proprietors). The key tradeoff: if you have W-2 employees, you must contribute the same percentage of compensation to their SEP-IRAs as you contribute to your own — making SEP-IRAs less attractive for businesses with significant non-owner payroll. For solo operators or partnerships with no employees, a SEP-IRA is the fastest, easiest, highest-contribution retirement plan available.

Current Law (2026)

Simplified Employee Pension (SEP) IRAs allow self-employed individuals and small business owners to make large employer contributions with minimal administrative burden.

Legal Authority

• 26 U.S.C. § 408(k) — Simplified employee pension plans: defines the SEP structure, contribution limits, eligible employees, and the requirement that contributions be made at a uniform percentage of compensation across all eligible employees
• 26 U.S.C. § 402(h) — Employer contributions to SEP: excludes SEP contributions from the employee's gross income up to the applicable limit; sets the $360,000 compensation cap above which contributions cannot be calculated

How It Works

A SEP-IRA receives contributions exclusively from the employer side — unlike a 401(k) where both employees and employers contribute. For a self-employed sole proprietor, the stated limit of "25% of compensation" is misleading: after deducting half of self-employment tax from net SE income under IRC § 164(f) and applying the modified rate, the effective contribution rate works out to approximately 20% of net SE income after the SE deduction — not 25% of gross earnings. On $100,000 of net SE income the maximum SEP contribution is roughly $18,587, not $25,000. If you have W-2 employees, the SEP's generosity has a hard condition: you must contribute the same percentage of compensation to every eligible employee's SEP-IRA that you contribute to your own. Eligible employees are those who are 21+, worked for you in at least 3 of the past 5 years, and earned at least $750. You cannot exclude part-time employees who meet the threshold — a practice contributing 20% of $400,000 for the owner must also contribute 20% of each staff member's salary, which can mean six figures in mandatory employee contributions at even modest headcounts.

The SEP's signature advantage is its extended deadline: unlike a 401(k) or SIMPLE IRA (which must be established by year-end), a SEP-IRA can be established and funded up to the tax return due date including extensions — as late as October 15 for a sole proprietor who files with an extension. A consultant who had a strong year and realizes in June that they want a large prior-year deduction can open a SEP-IRA and fund it before October 15 with no prior setup required. The significant limitation for high-earners: SEP-IRAs have no catch-up contribution for participants 50+ (the $72,000 cap is the same at any age), and SEP-IRA balances create a pro-rata problem for backdoor Roth conversions — if you have $72,000 in a SEP-IRA, most of any backdoor Roth conversion will be taxable rather than tax-free because the IRS requires treating all IRA balances as a pool. The fix is rolling the SEP-IRA into a current employer's 401(k) plan or switching to a Solo 401(k), which doesn't trigger the pro-rata rule.

How It Affects You

If you're a solo freelancer or consultant: The SEP-IRA is your fastest path to serious retirement savings. You can open one at any major brokerage in minutes, contribute up to $72,000 in a single deposit, and deduct it from your income. No plan document filing, no Form 5500, no administrative headaches. For a consultant netting $200,000, the maximum contribution is roughly $37,174 — cutting your federal tax bill by $8,000-$12,000 depending on your bracket.

If you have employees: The all-or-nothing rule is the SEP's biggest limitation. If you contribute 20% for yourself, you must contribute 20% of compensation for every eligible employee. For a dentist with three hygienists earning $72,000 each, that's $42,000 in mandatory employee contributions on top of your own. A Solo 401(k) (if no non-spouse employees) or a 401(k) profit-sharing plan (with employees) gives you more control over the split.

If you're deciding between SEP-IRA and Solo 401(k): Both share the same $72,000 annual cap, but they differ in key ways. The Solo 401(k) allows employee deferrals ($24,500 in 2026 + $8,000 catch-up if 50+), Roth contributions, and loan provisions. The SEP-IRA is simpler but only allows employer contributions, has no Roth option (until SECURE 2.0 Roth SEP is widely implemented), and creates pro-rata issues for backdoor Roth conversions. If you plan to do backdoor Roth conversions, the Solo 401(k) is almost always the better choice.

If you're near the filing deadline and haven't saved: The SEP's extended contribution deadline is its secret weapon. You can establish and fund a SEP-IRA as late as October 15 (with a filing extension) and deduct the contribution on the prior year's return. No other retirement plan is this easy to set up retroactively.

State Variations

Federal rules govern SEP-IRA contribution limits and tax treatment, but states vary in whether they follow the federal deduction:

• Pennsylvania: Does not allow a state income tax deduction for SEP-IRA contributions. PA taxes retirement plan contributions as ordinary income in the year earned, then exempts qualified distributions at retirement — the opposite of the federal treatment. A Pennsylvania sole proprietor who contributes $37,000 to a SEP-IRA gets the full federal deduction but owes PA income tax on that same $37,000 in the year contributed.
• New Jersey: Similar to Pennsylvania — NJ does not follow federal qualified retirement plan deductions. NJ taxes contributions in the year made and exempts qualified retirement distributions, but the contribution year creates a tax mismatch vs. federal.
• All other states with income taxes: Generally conform to federal treatment — SEP-IRA contributions reduce state taxable income to the same extent as federal.
• No-income-tax states (TX, FL, NV, WA, WY, SD, AK, TN, NH): Federal deduction is the only tax benefit; state treatment is irrelevant.

For PA and NJ residents, this mismatch makes the tax math more complex — the federal deduction still applies in full, but the state-level savings are zero in the contribution year. The rollover-to-401(k) strategy to solve the backdoor Roth pro-rata problem may also have different state tax implications in these states.

Implementing Regulations

• 26 CFR Part 1 — Income tax regulations (§§ 1.408-7, 1.408-8 — simplified employee pension plans, employer contribution limits, eligible employee definitions)

Pending Legislation

• SEP Roth: SECURE 2.0 Section 601 allows SEP-IRA contributions to be designated as Roth (after-tax). Implementation is ongoing — check plan provider availability.

Recent Developments

• SECURE 2.0 Roth SEP contributions: Section 601 of SECURE 2.0 (effective 2023) authorized employers to allow SEP-IRA contributions to be designated as Roth (after-tax). However, implementation has been slow — most custodians (Fidelity, Schwab, Vanguard) have not yet built the infrastructure to accept Roth SEP contributions as of early 2026. Check your provider's availability before counting on this option.
• 2026 limit increase: The annual dollar cap rose to $72,000 for 2026 (up from $70,000 in 2025), with the compensation cap at $360,000. Both are indexed to cost-of-living adjustments.
• Solo 401(k) competition: The Solo 401(k) has become increasingly popular among solo self-employed individuals due to its Roth option, loan provisions, and mega backdoor Roth capability. SEP-IRA enrollment among solo operators has plateaued as financial advisors increasingly recommend the Solo 401(k) for clients who want Roth flexibility.