Solo 401(k) Calculator

Disclaimer: Estimates only. Models a sole proprietor: the employer contribution is a percentage of net SE income after the deductible half of self-employment tax (max 20%). Applies the 2026 IRS limits — $24,500 employee deferral and $72,000 total — held flat in future years; age 50+ catch-up contributions are not included. Assumes constant return and income. Confirm plan rules with your administrator or tax professional.