How this estimate works
Compares projected after-tax values under the entered current tax rate, retirement tax rate, and investment assumptions.
2026 planning tool
Roth 401(k) vs. Traditional 401(k) Calculator
Compare projected after-tax retirement values for Roth and traditional 401(k) contributions.
Important limitations
This calculator is an educational estimate. Actual results depend on the taxpayer, employer plan, payroll system, and facts not entered.