Roth vs Traditional: A Tax Bracket Analysis for Every Age

In Your 20s-30s: The Roth Decade

Early career is almost always the strongest case for Roth contributions. Your income is typically lower (lower tax bracket), you have the longest time horizon for tax-free growth, and future tax rates are uncertain but historically more likely to increase than decrease.

The math is compelling: $6,000 in a Roth IRA at age 25, growing at 7% for 40 years, becomes ~$90,000 — all tax-free. That same $6,000 in a Traditional would grow to the same amount, but you'd owe taxes on every dollar withdrawn.

Exception: if your employer offers a Traditional 401(k) match, always take the match first. Free money beats tax optimization every time.

In Your 40s-50s: The Optimization Window

Mid-career is where the analysis gets interesting. You're likely in your peak earning years (22-32% bracket or higher), which makes Traditional more attractive. But you also have enough runway for Roth conversions to pay off.

The power move in this decade is tax diversification: contribute to Traditional for the current deduction, but also do strategic Roth conversions in lower-income years. This gives you a mix of pre-tax and post-tax money in retirement, which lets you control your tax bracket year by year.

Sagery's tax modeling shows this visually — you can see how different contribution strategies affect your 30-year tax bill, not just this year's return.

In Your 60s+: RMDs Change Everything

Required Minimum Distributions (RMDs) start at age 73 and force you to withdraw from Traditional accounts whether you need the money or not. These withdrawals are taxable income.

If you have large Traditional balances, RMDs can push you into higher brackets, increase your Medicare premiums (IRMAA), and make up to 85% of your Social Security benefits taxable. This is the "tax torpedo" that catches many retirees off guard.

The counter-strategy: Roth conversions in the gap years between retirement and RMDs (often ages 65-72, before RMDs begin at 73). Convert Traditional balances to Roth while your income is low, paying taxes at favorable rates before RMDs force your hand.

The Sagery Approach

We model all of this — current brackets, future brackets, RMDs, Social Security taxation, and IRMAA — across your entire retirement timeline. The tax optimization page shows you year-by-year bracket projections and identifies the sweet spot for conversions.

The key insight: Roth vs Traditional isn't a one-time decision. It's a lifetime strategy that should shift as your circumstances change. Having both types of accounts gives you optionality — and optionality has enormous value in an uncertain tax future.