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401(k) vs. Roth 401(k): Which is Better? | Money

Calculator: Compare a Roth 401(k) to a Traditional 401(K) The Case for a Roth 401(k) In a Roth, you use income that’s already been taxed from your paycheck and contribute to the account. But once inside, the cash grows tax free and isn’t subject to income taxes when you start taking money out in your 60s.