Roth vs Traditional 401k
Which account wins for FIRE? · Updated 2026
Roth vs Traditional: Which Wins?
The Roth vs Traditional decision hinges on one question: will your tax rate be higher now or in retirement?
If your current tax rate > retirement rate: Traditional wins (deduct now at higher rate, pay later at lower rate).
If your retirement rate > current rate: Roth wins (pay tax now at lower rate, withdraw tax-free later).
For FIRE seekers who plan to live on less in retirement, Traditional often wins. But having both account types gives you tax diversification — the ability to manage your taxable income each year.
| Scenario | Roth Value | Traditional Value | Winner |
|---|---|---|---|
| 22% now → 12% retirement | $30,236 | $34,061 | Traditional |
| 22% now → 22% retirement | $30,236 | $30,236 | Tie |
| 12% now → 22% retirement | $34,061 | $30,236 | Roth |
| 24% now → 32% retirement | $29,421 | $26,332 | Roth |
Frequently Asked Questions
How is roth vs traditional 401k calculated?
The formula is: Compare after-tax values. Enter your values above and click Calculate to see your personalized result instantly. The Roth vs Traditional decision hinges on whether your tax rate is higher now or in retirement. If you're in the 22% bracket now but expect to be in 12% later, Traditional wins. Roth shines when…
What inputs do I need for the roth vs traditional 401k?
You need: Contribution, Current Tax Rate, Retirement Tax Rate, Return, Years. Default values are pre-filled — adjust them to match your personal finances for a customized result.
Is the roth vs traditional 401k free to use?
Yes — all TorchFI calculators are completely free. No registration, no email required. Calculations run entirely in your browser for maximum privacy. We never see or store your financial data.
How does the roth vs traditional 401k help with FIRE planning?
Compare Roth and Traditional retirement accounts side by side. See which account type leaves you with more after-tax money based on your current and future tax brackets. This calculator helps you make data-driven decisions about your financial independence journey instead of relying on guesswork.