How this estimate works
Solves for comparable current take-home-pay cost, including any required Roth catch-up portion and applicable contribution cap.
2026 planning tool
After-Tax or Pre-Tax 401(k) Calculator
Compare Roth and pre-tax retirement savings at a similar current take-home-pay cost.
Important limitations
This calculator is an educational estimate. Actual results depend on the taxpayer, employer plan, payroll system, and facts not entered.