Chapter 12: Tax-Advantaged Accounts
The Roth versus Traditional retirement account decision confuses most people because the best answer depends on your unique tax situation. Traditional accounts let you deduct contributions today, reducing your taxable income immediately, but you pay taxes on withdrawals in retirement. Roth accounts force you to pay taxes now but offer tax-free growth and withdrawals later.
This calculator reveals which account type wins for your situation by comparing the after-tax value at retirement. It accounts for your current tax rate, expected retirement tax rate, contribution amount, years of growth, and investment returns. Understanding this calculation helps you make one of the highest-leverage tax decisions in retirement planning.
The chart shows account growth over time in after-tax dollars (what you can actually spend). The two metric cards show your Roth account value (already tax-free) and your Traditional account value after you pay retirement taxes on the entire balance. The winner is whichever account gives you more spendable money in retirement. Pay attention to which is highlighted in green, and note the margin of victory. A close result means either account works fine and flexibility should be your tiebreaker.
If your current tax rate is lower than expected retirement rate, Roth wins every time. Young people in early careers typically have lower rates and benefit most from Roth. If your current rate is higher than expected retirement rate, Traditional wins. High earners approaching retirement often use Traditional to reduce today's taxes. If rates are equal, Roth wins due to tax-free growth compounding on the full contribution amount. 2025 contribution limits are $7,000 under age 50, $8,000 age 50 and over. Traditional and Roth combined cannot exceed these limits.
Many people choose based on today's rate without projecting retirement income. If you'll have substantial pension income, social security, and investment distributions in retirement, your tax rate will likely be higher. This favors Roth now. If you expect to be retired and living off minimal income, your retirement rate will be lower, favoring Traditional. Project both scenarios to decide.
If your employer offers 401(k) matching, prioritize getting the full match before deciding between Roth and Traditional IRA. A 100% match is an instant return that beats any tax advantage. Contribute to your 401(k) enough to capture matching, then decide whether to fill Roth or Traditional IRA space.
Roth 401(k) contributions have the same limits as Traditional 401(k), currently $23,500 under 50. Roth IRA limits are only $7,000. If you earn over $161,000 (single) or $240,000 (married), you cannot contribute directly to Roth IRA. You can still do "backdoor Roth" by contributing to Traditional IRA and immediately converting to Roth, paying taxes on the conversion.
Traditional IRAs require you to start withdrawing at 73 years old. Roth IRAs have no required minimum distributions during your lifetime. This is a massive advantage if you don't need the money. Roth is effectively a tax-free wealth transfer vehicle to heirs. If this matters to you, Roth wins on flexibility alone.
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