The Solo 401k Guide: How to Deduct Up to $70k from Taxes in 2025

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This guide includes strategies for:

• Business owners
• Freelancers
• Employees with side hustles

And covers strategies like:

• Maxing out contribution limits (employee + employer)
• Roth vs. traditional Solo 401k choices
• Mega-backdoor Roth contributions
• Rollover & conversion tactics
• Using a Solo 401k loan responsibly
• IRS compliance & Form 5500-EZ filing