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Solo 401k Contribution Calculator
2026 Tax Year · Estimate your maximum contribution
Estimates only. The Solo 401k contribution calculation for self-employed workers involves IRS-specific adjustments. This calculator uses the standard IRS method from Publication 560. Consult a licensed CPA for your exact contribution limit before contributing.
Your Information
Gross revenue minus business expenses (Schedule C, line 31). Before any retirement contributions.
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Determines your catch-up contribution eligibility under SECURE 2.0.
2026 Solo 401k Annual Limits — IRS Reference
Source: IRS announcements, confirmed by Fidelity. Verify at irs.gov before contributing.
Sources: 2026 Solo 401k limits per IRS announcements and Fidelity. Contribution calculation method per IRS Publication 560. SE tax deduction per IRS Schedule SE. Disclaimer: Educational estimates only. Solo 401k plan must be established by December 31 of the tax year. Actual contribution deadlines depend on your business structure and extensions. Consult a licensed CPA.
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