Roth 401(k) vs Traditional 401(k)

Choosing between a Roth 401(k) and a Traditional 401(k) often depends on your current income, your expected income in retirement, and your career stage. If you are early in your career or expect your income to rise significantly in the future, a Roth 401(k) can be attractive because you pay taxes now, potentially at a lower rate, and enjoy tax-free withdrawals later. If you are already earning a high salary and expect to be in a lower tax bracket in retirement, a Traditional 401(k) may help you save on taxes today by reducing your taxable income.

• If you are a young professional just starting out:
  • Your salary is relatively low;
  • Your current tax rate is likely lower than it will be as your career advances;
  • By contributing to a Roth 401(k), you lock in today’s lower tax rate and can withdraw funds tax-free in retirement.
• If you are a mid-career professional at your peak earnings:
  • You might choose a Traditional 401(k) to reduce your taxable income now;
  • You expect to pay a lower rate on withdrawals after you retire.

Suppose you are 30 years old, earning $50,000 per year, and you contribute $5,000 to a Roth 401(k). You pay taxes on that $5,000 now, but in retirement, all your withdrawals (including investment growth) are tax-free, which can be a huge advantage if your investments grow significantly. If you instead contribute to a Traditional 401(k), your take-home pay is higher today because your taxable income is reduced by $5,000, but you will owe income tax on withdrawals in retirement. For someone earning $150,000 annually, the immediate tax deduction from a Traditional 401(k) contribution may be more appealing, as it can move them into a lower tax bracket and increase their take-home pay now.

Some people choose to use both a Roth 401(k) and a Traditional 401(k) to hedge against future tax uncertainty. By splitting contributions between both types, you can create flexibility for retirement withdrawals—some funds will be taxable, and some will not. This approach allows you to manage your taxable income in retirement more effectively, regardless of how tax laws or your financial situation may change. Employers often allow you to allocate your contributions between both accounts in any proportion you choose, up to the annual contribution limit.