Roth and Traditional 401(k)s Show Vast Spending Power Gaps
Retirement account tax structures create significant disparities in spending power, with new 2026 rules requiring high earners to use Roth accounts for catch-up contributions.
Tax obligations create a substantial gap in spending power between Roth and traditional 401(k) accounts, even when balances are identical. A retiree with $600,000 in a Roth 401(k) retains the full amount because taxes were paid during the contribution phase. Conversely, a retiree with $600,000 in a traditional 401(k) faces income tax on withdrawals, which reduces actual spending power to $468,000 at a 22% tax rate.
These differences impact annual income under the 4% withdrawal guideline. A Roth account holder keeps $24,000 annually, while a traditional account holder keeps $18,720. Traditional 401(k) withdrawals can also increase the taxable portion of Social Security benefits and are subject to minimum distributions. Roth 401(k)s have been exempt from these distributions since 2024.
Fidelity Investments and other financial entities highlight that Roth treatment provides greater flexibility in the timing of withdrawals and allows funds to grow and be extracted tax-free. New regulations effective in 2026 now mandate that workers earning over $150,000 direct their catch-up contributions into Roth accounts.
