The Solo 401(k) is one of the most powerful tools for self-employed professionals and S-Corp owners. Learn how it works, why it beats other plans, and how to set it up before December 31 to lock in 2025 tax savings.

If you earn six or seven figures, taxes are likely your biggest expense. This guide covers 10 IRS-approved strategies to legally lower your 2025 tax bill, from smart entity structures to advanced retirement and investment planning.