SEP IRA contribution calculator (2026)
Enter net self-employment profit to see a 2026 SEP IRA contribution using the Publication 560 approximation (about 20% of net earnings after half of self-employment tax), next to a Solo 401(k). A hypothetical estimate, not a guarantee and not tax advice.
Your 2026 SEP IRA contribution
$27,881
Solo 401(k), max
$52,381
Employee $24,500 + employer $27,881
SEP IRA, max
$27,881
Employer-only (~20% of earnings)
Gigaverse tracks this automatically, deductions, quarterly taxes, and retirement, every payout.
Join the free waitlist →Based on 2026 IRS limits (overall cap $72,000; employee deferral $24,500; catch-up $8,000 at 50+, $11,250 at 60–63; compensation cap $360,000). The SEP figure assumes a 20% rate, the Publication 560 approximation after half of self-employment tax. Hypothetical, not a guarantee, and not individualized tax or investment advice.
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How is a sole proprietor SEP calculated?
IRS Publication 560 reduces net profit by half of self-employment tax, then applies a rate that works out to about 20% of that net. The statutory cap is 25% of compensation, and the dollar cap for 2026 is $72,000. This calculator uses the 20% approximation and labels it as one.
Can I have a SEP IRA and a Roth IRA?
Yes, if you have earned income and you are under the Roth IRA income phase-out. The SEP contribution does not use up the Roth IRA dollar limit. The two accounts have different rules.
Is this the same math as the Solo 401(k) calculator?
Yes. This page leads with the SEP result. The Solo 401(k) comparison stays on the page so you can see the employee deferral a SEP does not have.
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Disclaimer: This calculator is for educational and informational purposes only and does not constitute financial, tax, or investment advice. All results are hypothetical estimates based on the inputs and stated assumptions, are not guarantees, and do not account for your full tax situation, state taxes, or credits. Gigaverse AI, Inc. is not a bank; brokerage services are provided through a FINRA/SIPC-member broker-dealer. Consult a qualified professional before making financial decisions. Full disclosures →