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FreeCalcSuite πŸ‡ΊπŸ‡Έ USA
IRS 2025/2026 Limits ($7k / $8k) β€’ Tax Arbitrage Engine

Roth IRA vs. Traditional IRA Calculator

Compare upfront tax deductions versus 100% tax-free retirement growth, optimize your lifetime wealth, and discover your personal tax breakeven point.

πŸ›‘οΈ Contribution & Horizon

2025/2026 TAX CODE
$7,000/yr
$
Tax Arbitrage Comparison

Tip: Many retirees move to 0% tax states (FL, TX, NV, TN).

8.00%
%
Reinvest Traditional Tax Savings

Invest upfront refund into brokerage account

Roth After-Tax
$1,206,200
100% Tax-Free
Traditional After-Tax
$1,061,456
Net of Taxes
Winning Strategy
Roth Leads
+$144,744 advantage
Annual Upfront Tax Saved
$1,890
With Traditional IRA
The Strategic Verdict ROTH RECOMMENDED
A Roth IRA will deliver an estimated +$144,744 more in spendable cash after taxes during retirement.

Because your current tax rate (27%) is higher than your expected retirement rate (12%), Traditional yields large immediate tax savings, but Roth's completely tax-free compounding over 35 years creates substantial long-term wealth superiority.

Roth IRA Spendable: $1,206,200 Traditional After-Tax: $1,061,456

πŸ“ˆ 35-Year Wealth Trajectory (5-Year Intervals)

Age Total Contributed Roth (Tax-Free) Trad. Pre-Tax Trad. After-Tax
πŸ•’ Recent Scenarios (Browser RAM)

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The Mathematical Framework: Roth IRA vs. Traditional IRA

Choosing between a Roth IRA and a Traditional IRA is fundamentally an exercise in **tax rate arbitrage**. You are betting on whether your marginal tax rate today is higher or lower than your effective tax rate when you liquidate funds in retirement.

1. The Traditional IRA Advantage: High Earners Today

If you currently sit in the 24%, 32%, or 37% federal tax bracket (plus state taxes), contributing \$7,000 to a Traditional IRA saves you between \$1,680 and \$2,800 in immediate taxes today. If you expect to retire with modest living expenses, taxable Social Security, and modest 401(k) withdrawals that keep you in the 12% or 22% bracket, the Traditional IRA delivers a proven tax arbitrage victory.

2. The Roth IRA Advantage: Decades of Tax-Free Compounding

For young workers in their 20s or 30s who currently pay low 12% or 22% taxes, a Roth IRA is unmatched. Over a 30 to 40-year investment horizon, **compounding growth will account for over 75% to 85% of your final portfolio value**. By paying taxes on the small seed upfront, you harvest the entire multi-million-dollar tree 100% free of federal, state, and capital gains taxes.

Frequently Asked Questions About IRAs

Can I contribute to both a 401(k) and a Roth IRA in the same year? β–Ό

Yes! Workplace 401(k) limits (\$23,500 in 2025/2026) are completely separate from individual IRA limits (\$7,000). A popular strategy is to capture your full employer 401(k) company match first, max out your Roth IRA second, and then return to your 401(k) to maximize remaining tax-advantaged space.

What is the 5-Year Rule for Roth IRA withdrawals? β–Ό

To withdraw investment earnings from a Roth IRA completely tax-free and penalty-free, two conditions must be met: you must be age 59Β½ or older, and at least 5 tax years must have passed since January 1 of the tax year for which you made your first contribution to any Roth IRA. However, your original principal contributions can always be withdrawn at any time, at any age, without taxes or penalties.

How does the Pro-Rata Rule affect Backdoor Roth IRAs? β–Ό

Under IRS Form 8606, if you hold pre-tax balances in any Traditional IRA, SEP IRA, or SIMPLE IRA on December 31 of the year you do a Backdoor Roth conversion, the IRS treats all your IRAs as a single pool. Your conversion will be taxed proportionally based on the ratio of pre-tax to post-tax dollars across all your IRAs. You can eliminate this by rolling pre-tax IRA funds into an employer 401(k) before December 31.

What happens if my income exceeds the Roth IRA MAGI limits? β–Ό

If your MAGI exceeds \$161,000 (single) or \$240,000 (married joint), you cannot make a direct contribution. If you contribute anyway, the IRS imposes a 6% excess contribution penalty per year until removed. Instead, use the Backdoor Roth IRA technique: make a non-deductible Traditional IRA contribution, then immediately convert it to Roth.

Do state income taxes apply to IRA distributions? β–Ό

Traditional IRA distributions are taxed as ordinary income at the state level (unless you reside in a state with no income tax like Florida, Texas, or Washington). Roth IRA qualified distributions are 100% exempt from state income taxes in all 50 states.

Are any of my financial details saved on your server? β–Ό

No. FreeCalcSuite operates 100% locally in your browser memory. We never transmit, store, or log your inputs, contribution amounts, or retirement numbers to any remote server.