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Free Roth vs Traditional IRA calculator to compare tax benefits and determine optimal IRA choice. Calculate after-tax retirement values based on current and future tax rates. Our calculator uses compound growth formulas and tax rate analysis to show which IRA type maximizes your retirement savings based on your unique tax situation and time horizon.
Last updated: February 2, 2026
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2024 limit: $7,000 ($8,000 if 50+)
Historical stock market average: ~10%, conservative: 6-7%
$961,437
Total value at retirement (tax-free)
$749,921
After-tax value ($961,437 pre-tax)
Tax savings now: $1,560 annually
$211,516
More in Roth IRA at retirement
Years to Retirement
35
Total Contributions
$228K
Roth IRA recommended: Long time horizon maximizes tax-free growth benefits.
Key benefit
Tax-Free Forever
Pay taxes now, no taxes on growth or withdrawals
Key benefit
Tax Deduction Now
Reduce current taxes, pay later on withdrawals
Critical factor
Now vs. Later Rates
Most important factor in IRA decision
True comparison
Net Spendable Income
What you actually get to spend in retirement
Time factor
Compound Interest
Both IRAs grow tax-deferred or tax-free
Decision point
Crossover Rate
Tax rate where outcomes are identical
$6,500/year from age 30-65, 7% return, 24% current tax, 22% retirement tax:
Roth Value
$961K
Traditional
$750K
Difference
$212K
Years
35
Our Roth vs Traditional IRA calculator compares the after-tax retirement values of both account types by projecting compound growth over your investment timeline and applying your current and expected retirement tax rates. The calculator uses standard compound interest formulas to show exactly how much spendable income each IRA type will provide in retirement after accounting for all taxes.
The key insight: Roth and Traditional IRAs grow identically before taxes, but the timing of taxation determines which is better. If your tax rate is lower in retirement, Traditional wins. If your tax rate is higher in retirement, Roth wins. If tax rates are equal, outcomes are mathematically identical—but Roth offers other benefits like no RMDs and tax-free inheritance.
Visualization of tax timing impact on Roth vs. Traditional IRA values
The Roth vs. Traditional IRA decision goes beyond simple tax rate comparison. Consider your current and future tax situations, retirement income sources, estate planning goals, and flexibility needs. Roth IRAs offer unique advantages like no required minimum distributions, tax-free inheritance to heirs, and flexibility to withdraw contributions anytime. Traditional IRAs provide immediate tax relief and can be beneficial if you expect significantly lower income (and thus lower tax rates) in retirement.
Planning retirement strategies? Check out our Roth conversion calculator and 401k loan calculator.
Get Custom Calculator for Your PlatformResult: Roth IRA provides $212K more in spendable retirement income
Despite similar tax rates, Roth wins due to tax-free growth over 35 years. Traditional saves $1,560/year in current taxes.
32% now → 22% retirement (10% drop)
Traditional wins by ~$65K
22% now → 24% retirement (rates rise)
Roth wins by ~$85K
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