SEP IRA Tax Savings for Self-Employed 2026: Contribution Limits, Calculations & Real Examples
A SEP IRA (Simplified Employee Pension Individual Retirement Account) is one of the most powerful tax-saving tools available to self-employed workers. You can contribute up to 25% of net self-employment income (up to $72,000 in 2026) and deduct it fully above-the-line. For high-earning freelancers, this single strategy can save thousands in taxes each year.
What Is a SEP IRA?
A SEP IRA is a retirement savings plan specifically designed for self-employed individuals and small business owners. It combines the tax advantages of a traditional IRA with much higher contribution limits, making it ideal for high-earning freelancers.
Key features:
- Contributions are tax-deductible (above-the-line, reduces AGI)
- Growth is tax-deferred until withdrawal
- No annual filing requirement (unlike Solo 401k, which requires Form 5500-EZ above $250,000)
- Can be opened and funded up to the tax filing deadline + extensions (April 15 / October 15)
- Available at virtually all major brokerage firms (Fidelity, Schwab, Vanguard, TD Ameritrade)
2026 SEP IRA Contribution Limits
| Year | Annual Limit | % of Net SE Income |
|---|---|---|
| 2024 | $69,000 | 25% |
| 2025 | $70,000 | 25% |
| 2026 | $72,000 | 25% |
The effective contribution rate for the self-employed is slightly less than 25% of gross self-employment income โ because the calculation starts with net self-employment earnings after deducting half of SE tax. See the calculation below.
How to Calculate Your Maximum SEP IRA Contribution
The IRS formula for self-employed individuals (from IRS Pub 560):
- Calculate net self-employment profit (Schedule C net income)
- Multiply by 92.35% (to get net earnings subject to SE tax)
- Multiply by ยฝ of SE tax rate (7.65%) โ this is the ยฝ SE deduction
- Subtract the ยฝ SE deduction from Step 2 net earnings
- The contribution rate is 20% of this adjusted net earnings
- Capped at $72,000 for 2026
Why 20% and not 25%? Because 25% of net earnings after the SE deduction mathematically equals approximately 20% of the original net profit. The IRS provides a worksheet in Pub 560 and an online rate table โ most tax software handles this automatically.
Net SE earnings: $100,000 ร 92.35% = $92,350
ยฝ SE tax: $92,350 ร 7.65% = $7,065
Adjusted earnings: $92,350 โ $7,065 = $85,285 (approx)
Wait โ simpler approach: use the 20% shortcut
Max SEP contribution โ $100,000 ร 20% = $20,000
Real Tax Savings Examples
Example 1 โ Moderate Income Freelancer ($60,000 net profit)
Max SEP IRA contribution: $60,000 ร 20% = $12,000
Without SEP: SE tax base: $60,000 ร 92.35% ร 15.3% = $8,479
Federal taxable income (single, standard deduction): $60,000 โ $4,240 (ยฝ SE) โ $16,100 (std ded) = $40,760
Federal income tax: ~$5,250
Total federal tax without SEP: ~$13,729
With SEP ($12,000 contribution):
Adjusted gross income: $60,000 โ $4,240 โ $12,000 = $43,760
Taxable income after std ded: $43,760 โ $15,000 = $28,760
Federal income tax: ~$3,285
Total federal tax with SEP: ~$11,764
Tax savings from SEP IRA contribution: ~$1,965 (Plus the $12,000 invested grows tax-deferred!)
Example 2 โ High Income Freelancer ($180,000 net profit)
Max SEP IRA contribution: $180,000 ร 20% = $36,000
Federal marginal rate: 32%
SE tax rate: ~14.13%
Tax savings on $36,000: $36,000 ร 32% income tax savings = $11,520
(SE tax is not directly reduced by SEP, only income tax)
Direct tax savings: ~$11,520 in federal income tax
Plus state income tax savings if applicable
SEP IRA vs. Solo 401(k)
| Feature | SEP IRA | Solo 401(k) |
|---|---|---|
| 2026 max contribution | $72,000 | $72,000 ($80,000 age 50+) |
| Employee contribution | Employer only (25% of comp) | Employee up to $24,500 + employer |
| At low income | Lower limit (% of income) | Higher โ employee portion is flat dollar |
| Roth option | No | Yes (Roth Solo 401k) |
| Loan provision | No | Yes (up to 50% of balance, $50k max) |
| Annual filing (IRS) | No | Form 5500-EZ if balance > $250,000 |
| Employees hired | Must cover eligible employees | Only for business owner + spouse |
| Setup complexity | Very easy (standard IRA) | Moderate (plan documents required) |
SEP IRA wins for simplicity and if you don't want to deal with plan documents. Solo 401(k) wins at lower income levels (because of the flat employee contribution) and if you want a Roth option or loan access.
SEP IRA Contribution Deadlines
Unlike a regular IRA (April 15 deadline), SEP IRA contributions can be made up to:
- April 15, 2027 for 2026 contributions (original filing deadline)
- October 15, 2027 if you file for a tax extension
This means you don't need to know your exact tax liability to fund your SEP IRA โ you can wait until you know your 2026 numbers and make the contribution before the extended deadline.
How to Open a SEP IRA
- Choose a custodian: Fidelity, Schwab, Vanguard, TD Ameritrade all offer free SEP IRAs with no account fees
- Complete IRS Form 5305-SEP (or the custodian's own plan document)
- Open the account in your name (or business name)
- Make contributions anytime up to the deadline
- Invest in your choice of index funds, ETFs, or other investments
There is no IRS filing required to establish a SEP IRA โ just the plan document (Form 5305-SEP or equivalent) and a bank/brokerage account.
Deep Dive: The Exact SEP Formula and Why the Rate Looks Like "20%"
The headline "25% of net income" is technically the rate applied to your compensation, but for a self-employed person "compensation" is not your full Schedule C profit. Per IRS Publication 560, you first subtract the ยฝ SE tax deduction, and the contribution itself is also deductible, so the math is circular and resolved by the IRS worksheet. The practical result: the maximum deductible SEP is about 21.3% of your net Schedule C profit, which is why you'll often see the simpler "~20%" shorthand used by calculators. Both are correct โ 20% is just a conservative estimate; the worksheet produces the exact figure.
The IRS worksheet steps are:
- Net profit (Schedule C, Line 31) โ call it P
- Net earnings from SE = P ร 92.35%
- Deduction for ยฝ of SE tax = (Step 2) ร 7.65%
- "Compensation" = Step 2 โ Step 3
- Maximum SEP = Step 4 ร 25%, capped at $72,000
Worked Example 3 โ Precise SEP at $120,000 Net Profit
Using the IRS worksheet rather than the 20% shortcut:
Net earnings from SE: $120,000 ร 92.35% = $110,820
ยฝ SE tax deduction: $110,820 ร 7.65% = $8,477.73
Compensation: $110,820 โ $8,477.73 = $102,342.27
Max SEP (25%): $102,342.27 ร 25% = $25,585.57
(vs. the 20% shorthand: $24,000 โ the worksheet gives ~$1,586 more)
AGI reduction from SEP + ยฝ SE = $25,585.57 + $8,477.73 = $34,063.30
Income-tax saved at 24% bracket: $25,585.57 ร 24% = $6,140.54
Note that the SEP does not lower SE tax (SE is computed on net profit before the contribution), but it lowers AGI, which can help with otherAGI-sensitive thresholds (e.g., the QBI phase-out, deductibility of a traditional IRA, and certain credits). And the $25,586 grows tax-deferred until withdrawal.
Common SEP IRA Mistakes
- Thinking a SEP lowers SE tax. It lowers income tax (AGI), not the 15.3% SE tax, which is computed on net profit first.
- Missing the extended deadline. You can fund until your filing deadline plus extension, but if you don't file an extension, the door closes April 15.
- Forgetting employee coverage. If you hire eligible employees, you must contribute for them on the same percentage basis โ a SEP is not owner-only once staff are eligible.
- Over-contributing. The lesser of 25% of compensation or $72,000 binds. Excess contributions are taxed and penalized.
- Assuming a Roth option. A traditional SEP has no Roth flavor; only a Solo 401(k) offers Roth. Want Roth? Use the Solo 401(k).
- Ignoring state tax. In states with an income tax, the SEP deduction usually saves state tax too โ a double benefit worth modeling.
Step-by-Step: Open and Fund a SEP IRA
Step 1 โ Confirm eligibility
Any self-employed person with net SE income can open a SEP; there is no minimum income.
Step 2 โ Pick a custodian
Choose a brokerage (Fidelity, Schwab, Vanguard) offering no-fee SEP IRAs and low-cost index funds.
Step 3 โ Adopt the plan document
File Form 5305-SEP (or the custodian's equivalent). No IRS filing is required to establish the plan.
Step 4 โ Compute the maximum
Run the Pub 560 worksheet (or our Retirement Calculator) to find your exact limit.
Step 5 โ Fund before the deadline
Contribute by April 15 (or October 15 with an extension). Invest the cash; it grows tax-deferred.
Cross-References: SEP in Your Full Plan
- Retirement Deduction Calculator โ Model SEP vs. Solo 401(k) precisely: Retirement Calculator.
- Base SE Tax โ SE tax is computed before the SEP, which is why the contribution can't reduce it: Base SE Tax Calculator.
- Year-End Planning โ The SEP is the #1 year-end move: Year-End Tips.
- QBI Deduction โ Lowering AGI with a SEP can affect QBI phase-outs: QBI Discussion.
- Mileage & Deductions โ Stack deductions to maximize the profit you then shelter: Mileage Guide.
FAQ
Does SEP IRA reduce self-employment tax?
No. SEP IRA contributions reduce your federal income tax (by reducing AGI) but do not reduce self-employment tax. SE tax is calculated before retirement deductions.
Can I contribute to both a SEP IRA and a regular IRA?
Yes. You can have both a SEP IRA and a traditional or Roth IRA. The traditional IRA may or may not be deductible depending on your income and whether you have a workplace plan.
Can I set up a SEP IRA if I have no employees?
Yes. A SEP IRA is ideal for solo self-employed individuals. If you later hire employees, you'd be required to contribute proportionally for eligible employees as well.
What is the actual contribution rate โ 20% or 25%?
The 25% rate applies to your compensation (net earnings after the ยฝ SE tax deduction). Because compensation is smaller than gross net profit, the real deductible amount works out to about 21.3% of net profit; the "20%" figure is a conservative shortcut used by many calculators.
Can I have a SEP IRA and a Solo 401(k) at the same time?
You can have both, but the combined employee + employer contributions across plans for the same business are subject to overall limits, and the employee deferral ($23,500 for 2025) can only be made once across all plans. Most solo owners pick one plan rather than both.
Is the SEP contribution deadline really later than a regular IRA?
Yes. A SEP can be funded as late as your tax-filing deadline, including extensions (October 15 with an extension), whereas a traditional or Roth IRA contribution for a given year must be made by April 15.
Are SEP withdrawals taxed?
Yes. A traditional SEP is tax-deferred, so withdrawals in retirement are taxed as ordinary income, and taking distributions before age 59ยฝ generally triggers a 10% early-withdrawal penalty (with limited exceptions).
References
- IRS Publication 560 โ Retirement Plans for Small Business
- IRS SEP-IRA Plan FAQs
- IRS Form 5305-SEP โ SEP Plan Agreement