How to Choose Between Traditional and Roth 401(k)

Compare traditional vs Roth 401(k) options based on your current tax rate, future expectations, and retirement timeline.

1. Compare your current tax rate to your expected retirement rate. Traditional 401(k) contributions reduce your taxable income now but you pay taxes on withdrawals in retirement. Roth 401(k) contributions use after-tax dollars now but withdrawals are tax-free in retirement. If you're currently in the 22% tax bracket but expect to be in the 12% bracket in retirement, traditional usually wins.
2. Consider your current income level and career stage. Early-career workers often benefit from Roth because they're typically in lower tax brackets and have decades for tax-free growth. High earners in peak earning years usually favor traditional to get the immediate tax deduction. Mid-career workers might split contributions between both types.
3. Factor in your retirement timeline and withdrawal needs. Roth 401(k) has no required minimum distributions during your lifetime, unlike traditional 401(k) which requires withdrawals starting at age 73. If you plan to work past 65 or want to leave money to heirs, Roth offers more flexibility. Traditional works well if you need the tax break now and plan standard retirement withdrawals.
4. Account for state tax implications. If you live in a high-tax state now but plan to retire in a no-tax state like Florida or Texas, traditional 401(k) can provide extra savings. Conversely, if you're in a no-tax state now but might move somewhere with state income tax in retirement, Roth protects against that future tax burden.
5. Decide on your contribution split. You don't have to pick just one option. Many people contribute enough to traditional 401(k) to drop down a tax bracket, then put additional contributions in Roth. This gives you tax diversification and flexibility in retirement. Start with whatever gets you the full employer match first.