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Retirement

How much can I contribute to a Solo 401(k) in 2025?

Quick Answer

For 2025 a Solo 401(k) tops out at $70,000 in total annual additions ($77,500 if age 50+, $81,250 ages 60–63). The cap combines a $23,500 employee deferral with employer profit-sharing of up to 25% of net self-employment compensation.

2025 Solo 401(k) contribution limits by age — base, age 50+, and 60–63 super catch-up.
Warren Team
Updated April 26, 2026
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Important Disclaimer:

The information provided is for educational purposes only and should not be considered as personalized financial advice. Warren is a registered investment advisor. Past performance does not guarantee future results. Please consult with a qualified financial advisor before making investment decisions.

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