Quick Answer
Your SEP-IRA contribution is 25% of your net self-employment earnings after deducting half of your self-employment tax. For $100,000 in freelance profit, you'd contribute up to $20,000 after accounting for the $7,065 self-employment tax adjustment.
Best Answer
Priya Sharma, Small Business Tax Analyst
Freelancers who rely entirely on self-employment income and want to maximize retirement savings
How to calculate your SEP-IRA contribution limit
Calculating your SEP-IRA contribution involves a three-step process that accounts for the self-employment tax deduction. The contribution limit is 25% of your net self-employment earnings, but "net earnings" has a specific definition for SEP-IRA purposes.
Step-by-step calculation process
Step 1: Calculate your net profit from self-employment
Start with your Schedule C net profit (total income minus business expenses). This is your baseline number.
Step 2: Calculate and deduct half of self-employment tax
Self-employment tax is 15.3% of your net profit (up to the Social Security wage base of $176,100 in 2026). You can deduct half of this amount (7.65%) from your net earnings.
Step 3: Apply the 25% contribution rate
Multiply your adjusted net earnings by 25% to get your maximum SEP-IRA contribution.
Example: $100,000 freelance profit calculation
Let's walk through a complete example with $100,000 in Schedule C net profit:
Step 1: Net profit = $100,000
Step 2: Self-employment tax calculation
Step 3: SEP-IRA contribution limit
Contribution limits comparison table
*Social Security portion caps at $176,100 wage base
Key factors that affect your contribution
What you should do
1. Track your quarterly net profit to estimate your SEP-IRA capacity throughout the year
2. Make contributions by the tax filing deadline (including extensions) - you have until April 15, 2027, for 2026 contributions
3. Consider monthly contributions rather than one lump sum to benefit from dollar-cost averaging
4. Use our deduction finder to ensure you're not missing business expenses that could reduce your tax burden while maintaining SEP-IRA eligibility
Key takeaway: Your SEP-IRA contribution is 25% of net self-employment earnings after deducting half of your self-employment tax. A $100,000 profit typically allows for a $23,088 contribution after the self-employment tax adjustment.
Key Takeaway: Your SEP-IRA contribution is 25% of net self-employment earnings after deducting half of your self-employment tax, with a maximum annual contribution of $70,000 in 2026.
SEP-IRA contribution limits by income level showing the impact of self-employment tax adjustments
| Net Profit | Self-Employment Tax | Deductible Portion | Adjusted Earnings | SEP-IRA Limit (25%) | Annual Cap Impact |
|---|---|---|---|---|---|
| $50,000 | $7,650 | $3,825 | $46,175 | $11,544 | No cap |
| $75,000 | $11,475 | $5,738 | $69,263 | $17,316 | No cap |
| $100,000 | $15,300 | $7,650 | $92,350 | $23,088 | No cap |
| $200,000 | $26,956* | $13,478 | $186,522 | $46,631 | No cap |
| $300,000 | $30,645* | $15,323 | $284,677 | $71,169 | Limited to $70,000 |
More Perspectives
James Okafor, Self-Employment Tax Specialist
High-income freelancers who may hit SEP-IRA contribution limits and need advanced tax planning
Advanced considerations for high earners
When your freelance income exceeds $280,000, you'll likely hit the $70,000 SEP-IRA annual contribution limit, requiring different retirement planning strategies.
The high-earner calculation reality
For 2026, if your net self-employment earnings exceed approximately $307,000 (after the self-employment tax deduction), you'll max out the SEP-IRA contribution limit. At this income level, the 25% rate would theoretically allow higher contributions, but IRS rules cap SEP-IRA contributions at $70,000.
Example: $400,000 freelance profit
Strategies beyond SEP-IRA limits
Individual 401(k) alternative: Consider switching to a Solo 401(k), which allows up to $70,000 in total contributions for 2026 ($77,500 if 50+) but with more complex administration.
Backdoor Roth conversions: Use after-tax dollars for Roth IRA contributions, especially valuable at high income levels where traditional deductions phase out.
Defined benefit plans: For consistently high earners, defined benefit plans can allow contributions exceeding $200,000 annually but require actuarial calculations and significant administrative costs.
Key takeaway: High earners maxing out SEP-IRA contributions at $70,000 should explore Solo 401(k)s or defined benefit plans for additional tax-deferred retirement savings capacity.
Key Takeaway: High earners who max out the $70,000 SEP-IRA limit should consider Solo 401(k)s or defined benefit plans for additional retirement savings capacity.
Priya Sharma, Small Business Tax Analyst
First-year freelancers learning about retirement savings and tax-advantaged accounts
Getting started with SEP-IRA contributions
As a new freelancer, understanding SEP-IRA calculations helps you plan for both retirement savings and tax reduction. The key is starting with accurate record-keeping from day one.
Simple calculation for beginners
Use this simplified approach: take your net freelance profit, multiply by 0.9235 (to account for the self-employment tax deduction), then multiply by 0.25. This gives you an approximate SEP-IRA contribution limit.
First-year example: $30,000 profit
Why this matters in year one
Tax reduction: A $6,926 SEP-IRA contribution reduces your taxable income dollar-for-dollar, potentially saving $1,500+ in taxes depending on your bracket.
Quarterly planning: Estimate your annual profit each quarter to determine how much you can contribute, helping with both retirement planning and quarterly tax estimates.
Record-keeping foundation: Track business income and expenses carefully - these directly impact your SEP-IRA contribution capacity.
Common first-year mistakes
Key takeaway: New freelancers can use the quick formula (net profit × 0.9235 × 0.25) to estimate SEP-IRA contributions, with a $30,000 profit allowing roughly $6,926 in retirement savings.
Key Takeaway: New freelancers can estimate SEP-IRA contributions using net profit × 0.9235 × 0.25, with consistent tracking being key to maximizing both retirement savings and tax benefits.
Sources
- IRS Publication 560 — Retirement Plans for Small Business
- IRS Publication 334 — Tax Guide for Small Business
Reviewed by Priya Sharma, Small Business Tax Analyst on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.