Roth vs Traditional 401k Calculator | Buy The Haystack
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Roth vs Traditional 401k

The difference comes down to when you pay taxes. See which one puts more money in your pocket at retirement.

Roth 401k: You contribute after-tax dollars now. Your money grows tax-free and withdrawals in retirement are completely tax-free.

Traditional 401k: You contribute pre-tax dollars now, which lowers your taxable income today. You pay taxes on withdrawals in retirement.

Your Details
$
2026 limit: $23,500 / $31,000 if 50+
%
Your marginal federal tax rate today
%
What you expect to pay in retirement
7%
S&P 500 historical avg ~10% pre-inflation
Not financial advice — just the data. | Back to Tools | BuyTheHaystack.com