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Roth IRA vs Traditional IRA Calculator
Should you use a Roth IRA or Traditional IRA? Compare post-tax vs pre-tax retirement savings, calculate tax savings, and see which account type leaves you with more money in retirement.
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๐ Current Account Balances
Traditional IRA After-Tax Value
$0
After paying taxes on withdrawals
Roth IRA After-Tax Value
$0
Tax-free withdrawals
Difference
$0
Roth minus Traditional
Break-Even Rate
0%
Retirement tax rate where both are equal
๐ Side-by-Side Comparison
Metric
Traditional IRA
Roth IRA
โ Recommendation
$0
Based on your inputs, here's our recommendation.
๐ Break-Even Tax Rate Analysis
0%
If your retirement tax rate is above this, Roth wins. If below, Traditional wins.
๐ Step-by-Step Calculation
Real-World Roth vs Traditional IRA Examples
๐ฑ Young Professional (Roth Advantage)
Sarah, age 25, is in a low tax bracket now (12%) and expects higher income in retirement (22%). She contributes $7,000/year to her IRA and expects 7% annual returns.
No existing balances. Retirement age: 65 (40 years of growth).
Traditional IRA after-tax value:$1,495,000 (after 22% tax)
Roth IRA after-tax value:$1,917,000 (tax-free!)
Winner:Roth saves $422,000 more
Sarah's low current tax rate and high expected future rate make Roth the clear winner. She pays taxes now at 12% to avoid much higher taxes later.
David, age 45, is in a high tax bracket now (35%) and expects lower income in retirement (24%). He contributes $7,000/year and expects 6% annual returns.
Current Traditional balance: $200,000 | Current Roth balance: $50,000. Retirement at 65 (20 years).
Traditional IRA after-tax value:$988,000
Roth IRA after-tax value:$911,000
Winner:Traditional saves $77,000 more
David benefits from the immediate tax deduction at 35% now and pays taxes at only 24% in retirement. The tax arbitrage favors Traditional.
โ๏ธ Mid-Career (Close Call โ Break-Even)
Maria, age 35, is in the 22% bracket now and expects a similar 22% bracket in retirement. She contributes $7,000/year with 7% returns and $30,000 in both accounts.
Retirement at 65 (30 years).
Traditional IRA after-tax value:$823,000
Roth IRA after-tax value:$823,000
Result:They're equal! Break-even rate โ 22%
When current and future tax rates are the same, the outcome is identical. Maria's choice depends on other factors like RMD preferences and flexibility.
๐ Nearing Retirement (RMD Consideration)
Robert, age 55, has $500,000 in his Traditional IRA and $100,000 in his Roth IRA. He's in the 32% bracket now and expects 24% in retirement.
He plans to retire at 65 and contribute $8,000/year (catch-up) with 6% returns.
Traditional IRA after-tax value:$1,310,000
Roth IRA after-tax value:$1,150,000
Winner:Traditional wins by $160,000
However! Robert should consider that Traditional IRA has Required Minimum Distributions (RMDs) starting at age 73, which could push him into a higher tax bracket later. Roth IRAs have no RMDs, giving more flexibility.
Understanding Roth vs Traditional IRA
The choice between a Roth IRA and a Traditional IRA comes down to one fundamental question: Do you want to pay taxes now or later?
Traditional IRA
Contributions are made with pre-tax dollars, reducing your taxable income today. You get an immediate tax deduction. However, withdrawals in retirement are taxed as ordinary income. You must start taking Required Minimum Distributions (RMDs) at age 73.
Traditional Future Value = ฮฃ (Contribution ร (1 + r)โฟ) + Current_Balance ร (1 + r)โฟ
n = years to retirement, r = annual return rate
Traditional After-Tax Value = Future Value ร (1 โ Retirement Tax Rate)
Tax is owed on every dollar withdrawn
Immediate Tax Savings = Annual Contribution ร Current Tax Rate
You save this much on your tax bill each year
Roth IRA
Contributions are made with after-tax dollars โ no immediate tax deduction. But withdrawals in retirement are completely tax-free (including all growth). There are no RMDs, giving you complete flexibility in retirement.
Roth After-Tax Value = Future Value (no taxes โ tax-free!)
Zero taxes on withdrawal
Roth Tax Cost Now = Annual Contribution ร Current Tax Rate
You pay this amount in additional taxes today
Break-Even Point
The break-even retirement tax rate is the rate at which both accounts produce the same after-tax value. This is the single most important number in your decision.
If your expected retirement rate is ABOVE this โ choose Roth. If BELOW โ choose Traditional.
Step-by-Step Comparison Process
1
Determine years to retirement: Retirement Age โ Current Age = Number of years for growth
2
Calculate Traditional future value: Grow the current balance and each annual contribution at the expected return rate over the investment period.
3
Calculate Traditional after-tax value: Multiply the future value by (1 โ retirement tax rate). This accounts for taxes owed on withdrawals.
4
Calculate Roth future value: Apply the same growth formula to the current Roth balance and annual contributions.
5
Roth after-tax value = future value: No taxes are subtracted โ all withdrawals are tax-free.
6
Compare after-tax values: Subtract Traditional after-tax from Roth after-tax. Positive means Roth wins; negative means Traditional wins.
7
Calculate break-even rate: The retirement tax rate at which both accounts produce the same after-tax value.
Key Decision Factors
๐ Current Tax Rate
If you're in a low tax bracket now, Roth is typically better โ you pay low taxes today to avoid potentially higher taxes later. If you're in a high bracket, Traditional's immediate deduction is more valuable.
๐ Expected Future Tax Rate
If you expect to be in a higher tax bracket in retirement (due to career growth, large Traditional IRA balances, or tax increases), Roth wins. If you expect lower income, Traditional wins.
๐ฆ Required Minimum Distributions
Traditional IRAs require you to start taking RMDs at age 73. These withdrawals are taxable and can push you into a higher bracket. Roth IRAs have no RMDs โ you can let the money grow tax-free forever.
๐ก Flexibility & Estate Planning
Roth IRAs offer more flexibility: you can withdraw contributions (not earnings) anytime without penalty. Roth IRAs also pass to heirs tax-free, making them excellent estate planning tools.
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Side-by-Side Comparison
Compare Traditional and Roth IRAs across all key metrics โ contributions, growth, taxes, and after-tax value โ in one clear table.
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Smart Recommendation
Get an instant recommendation based on your specific tax situation, with the break-even tax rate clearly explained.
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Break-Even Analysis
Know exactly at what retirement tax rate both accounts are equal, helping you make a data-driven decision.
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RMD Awareness
Understand how Required Minimum Distributions (RMDs) starting at age 73 affect Traditional IRA planning and why Roth's no-RMD rule is valuable.
Roth IRA vs Traditional IRA: Which Is Right for You?
Choosing between a Roth IRA and a Traditional IRA is one of the most important retirement planning decisions you'll make. Both accounts offer tax advantages, but they work in fundamentally different ways. The right choice depends on your current tax situation, your expected future tax rate, and your retirement goals.
A Traditional IRA gives you a tax break today โ contributions are tax-deductible, reducing your taxable income for the year. But when you withdraw money in retirement, you pay ordinary income tax on every dollar. This is ideal if you expect to be in a lower tax bracket in retirement than you are now.
A Roth IRA works in reverse โ you get no tax deduction today, but all withdrawals in retirement are completely tax-free, including all investment growth. This is ideal if you expect to be in a higher tax bracket in retirement. Roth IRAs also offer unique advantages like no Required Minimum Distributions (RMDs), giving you more control over your retirement income.
The Tax Arbitrage Principle
The core principle behind the Roth vs Traditional decision is tax arbitrage โ paying taxes when your rate is lowest. If your current marginal tax rate is lower than your expected retirement tax rate, Roth wins. If your current rate is higher, Traditional wins. If they're the same, the result is identical (ignoring other factors like RMDs).
For example, if you're in the 12% bracket today but expect to be in the 22% bracket in retirement (due to career growth, pension income, or large Traditional IRA balances), paying 12% now to avoid 22% later is a clear win for Roth. Conversely, if you're in the 32% bracket now and expect 22% in retirement, taking the immediate deduction with Traditional saves you 10% on every dollar contributed.
If Current Rate < Retirement Rate โ Choose Roth
Pay taxes now at a lower rate to avoid higher taxes later
If Current Rate > Retirement Rate โ Choose Traditional
Get the tax deduction now and pay lower taxes in retirement
Required Minimum Distributions (RMDs)
Starting at age 73, Traditional IRA owners must take Required Minimum Distributions (RMDs) each year. These are calculated based on your life expectancy and the account balance. RMDs are taxable as ordinary income and can push you into a higher tax bracket in retirement, potentially increasing your Medicare premiums and triggering other tax consequences.
Roth IRAs have no RMDs during the original owner's lifetime. This means you can let your Roth IRA grow tax-free indefinitely, only withdrawing what you need when you need it. This flexibility makes Roth IRAs excellent for tax planning, estate planning, and leaving a tax-free inheritance to your heirs.
Contribution Limits and Eligibility
For 2025-2026, the IRA contribution limit is $7,000 per year ($8,000 if age 50+). This is the combined limit across all your IRAs โ you can split it between Roth and Traditional, but the total cannot exceed the limit.
Roth IRA contributions are subject to income limits. For 2025, single filers with a modified adjusted gross income (MAGI) above $165,000 and married filing jointly above $246,000 cannot contribute directly to a Roth IRA. Traditional IRA contributions may also be limited if you or your spouse have access to a workplace retirement plan.
Key Factors in Your Decision
The Roth vs Traditional decision involves more than just comparing tax rates. Here are the most important factors to consider:
Current vs Future Tax Rate
This is the most important factor. If you expect your retirement tax rate to be higher than your current rate, Roth is better. If you expect it to be lower, Traditional is better. Use our calculator to find your exact break-even rate.
Investment Time Horizon
The power of tax-free growth in a Roth IRA becomes more valuable over longer time horizons. A young person with 40 years until retirement benefits enormously from never paying taxes on decades of compound growth.
Income Diversification in Retirement
Having both Traditional and Roth assets in retirement gives you tax diversification. You can withdraw from Traditional accounts up to the top of your current tax bracket, then use Roth funds for any additional spending needs without pushing yourself into a higher bracket.
Estate Planning
Roth IRAs pass to heirs tax-free, making them excellent estate planning tools. Traditional IRAs pass with a tax liability โ heirs must pay income tax on withdrawals. The SECURE Act also requires most non-spouse beneficiaries to withdraw inherited Traditional IRAs within 10 years.
๐ฑ Early Career (Roth)
Low income = low tax rate now. Pay taxes now at 10-12% and enjoy tax-free growth for decades. Roth is typically the best choice for young professionals.
๐ฐ Peak Earnings (Mixed)
High tax bracket makes Traditional's deduction valuable. Consider contributing to Traditional to reduce today's taxes, but maintain some Roth exposure for tax diversification.
๐ Near Retirement (Traditional)
If you're in your peak earning years with a high tax rate and plan to have lower income in retirement, Traditional's immediate deduction is hard to beat.
๐ The Roth Conversion Option
Can convert Traditional IRA to Roth at any time, paying taxes on the converted amount. This is most beneficial in low-income years when your tax rate is temporarily low.
Roth vs Traditional: Detailed Comparison
Tax Treatment
Traditional IRA: Contributions are tax-deductible (pre-tax). Withdrawals are taxed as ordinary income. You save on taxes now but pay later.
Roth IRA: Contributions are not deductible (after-tax). Withdrawals are completely tax-free. You pay taxes now but never again.
Required Minimum Distributions (RMDs)
Traditional IRA: RMDs begin at age 73. You must withdraw a certain minimum each year based on IRS life expectancy tables. Failure to take RMDs results in a 25% penalty.
Roth IRA: No RMDs during the original owner's lifetime. You can leave the money invested indefinitely, withdrawing only what you need.
Income Limits
Traditional IRA: No income limits for contributions, but deductibility may be limited if you or your spouse have a workplace retirement plan.
Roth IRA: Income limits apply. For 2025-2026, single filers with MAGI above $165,000 and married filing jointly above $246,000 cannot contribute directly.
Early Withdrawal Rules
Traditional IRA: Withdrawals before age 59ยฝ are subject to ordinary income tax plus a 10% penalty (with some exceptions).
Roth IRA: Contributions can be withdrawn anytime tax-free and penalty-free. Earnings withdrawn before age 59ยฝ and before the 5-year rule may be subject to tax and penalty.
Total Traditional Contributions ร (1 โ Current Rate) = After-Tax Cost
vs. Roth: same after-tax cost, different timing of taxes
Frequently Asked Questions
What is the main difference between a Roth IRA and a Traditional IRA?
The main difference is when you pay taxes. With a Traditional IRA, contributions are tax-deductible today, but withdrawals in retirement are taxed as ordinary income. With a Roth IRA, contributions are made with after-tax dollars (no deduction today), but all withdrawals in retirement โ including all investment growth โ are completely tax-free. Additionally, Roth IRAs have no Required Minimum Distributions (RMDs), while Traditional IRAs require RMDs starting at age 73.
Can I contribute to both a Roth and Traditional IRA?
Yes, you can contribute to both a Roth IRA and a Traditional IRA in the same year, but the total combined contribution cannot exceed the annual limit ($7,000 in 2025-2026, or $8,000 if age 50+). For example, you could contribute $4,000 to a Traditional IRA and $3,000 to a Roth IRA, as long as you meet the eligibility requirements for each type. Many people use this strategy for tax diversification.
What happens to my Traditional IRA at age 73?
Starting at age 73, you must take Required Minimum Distributions (RMDs) from your Traditional IRA each year. The amount is calculated by dividing your account balance as of December 31 of the previous year by your life expectancy factor from the IRS Uniform Lifetime Table. RMDs are taxable as ordinary income. If you fail to take your RMD, you face a steep 25% penalty on the amount not withdrawn. Roth IRAs do not have RMDs during the original owner's lifetime.
Can I convert my Traditional IRA to a Roth IRA?
Yes, you can convert a Traditional IRA to a Roth IRA at any time through a process called a Roth conversion. You'll owe income tax on the amount converted (since you're moving pre-tax money to an after-tax account). Roth conversions are most beneficial when: (1) you're in a low-income year and can pay taxes at a lower rate, (2) the market is down and your account balance is lower, or (3) you expect to be in a higher tax bracket in the future. There is no limit on how much you can convert, but the converted amount is added to your taxable income for the year.
What is the break-even tax rate?
The break-even tax rate is the retirement tax rate at which a Traditional IRA and Roth IRA produce the same after-tax value. If your expected retirement tax rate is above the break-even rate, a Roth IRA is better (you'd pay more in taxes with Traditional). If your expected retirement tax rate is below the break-even rate, a Traditional IRA is better. Our calculator automatically computes this rate based on your specific inputs.
Are there income limits for Roth IRA contributions?
Yes, Roth IRA contributions have income limits. For 2025-2026: Single filers with a modified adjusted gross income (MAGI) up to $150,000 can contribute the full amount. Contributions phase out between $150,000 and $165,000. Above $165,000, you cannot contribute directly. Married filing jointly filers can contribute fully with MAGI up to $236,000, with phase-out between $236,000 and $246,000. Above $246,000, direct contributions are not allowed. If you exceed these limits, you may consider a Backdoor Roth IRA strategy.
โ ๏ธ Important Note: This Roth IRA vs Traditional IRA Calculator is for educational and informational purposes only. While every effort has been made to ensure accuracy, results should be verified with a qualified financial advisor or tax professional before making any financial decisions. Tax laws, contribution limits, and income thresholds are subject to change. This calculator does not account for all nuances of tax law, including the impact of Social Security taxation, Medicare premiums, state taxes, or the Secure Act provisions. Always consult a professional for personalized advice.