RETIREMENT
Roth vs Traditional IRA Calculator \u2014 Which Saves More
By Worldtickers ·
Use our free calculator to compare Roth IRA vs Traditional IRA and determine which account type saves you more in taxes based on your income, tax bracket, and retirement goals.
This roth vs traditional ira calculator \u2014 which saves more tool focuses on use our free calculator to compare Roth IRA vs Traditional IRA and determine which account type saves you more in taxes based on your income, tax bracket, and retirement goals. Use it to estimate retirement targets, contribution needs, withdrawal assumptions, and long-term income scenarios while adjusting savings rates, return assumptions, time horizons, and spending goals.
Roth vs Traditional IRA Calculator
Roth vs Traditional IRA
Compare after-tax outcomes between Roth and Traditional IRA contributions.
Key Differences
The Roth IRA and Traditional IRA are the two main types of individual retirement accounts, and choosing between them is one of the most important decisions in retirement planning. The core difference is simple: Traditional IRA = tax break now, taxes later. Roth IRA = taxes now, tax break later.
Tax Treatment
Traditional IRA contributions may be tax-deductible, reducing your taxable income today. All growth and withdrawals in retirement are taxed as ordinary income. Roth IRA contributions are made with after-tax dollars, but all growth and qualified withdrawals are completely tax-free.
Income Limits
Traditional IRA contributions are available at any income level, but the tax deduction phases out if you are covered by a workplace plan and earn above certain thresholds. Roth IRA contributions are limited by income: single filers earning above $150,000 and married filers above $236,000 (2026) cannot contribute directly.
Required Minimum Distributions
Traditional IRAs require you to start taking distributions at age 73, whether you need the money or not. These RMDs are taxable and cannot be avoided. Roth IRAs have no RMDs during the owner's lifetime, giving you complete control over your retirement income timing.
When Each Wins
The Traditional IRA wins when your current tax rate is higher than your expected retirement tax rate. The Roth IRA wins when your current tax rate is lower than your expected retirement rate. Generally, younger workers and those in lower brackets benefit most from Roth, while higher-income workers near peak earning years may benefit from Traditional.
How to Use This Calculator
Enter your current age, income tax bracket, expected retirement tax bracket, annual contribution, and years until retirement. The calculator compares the after-tax value of both IRA types and shows which one leaves you with more money in retirement.
Current Tax Bracket
Enter your current marginal federal income tax rate. For 2026, the brackets are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Your marginal rate is the rate applied to your last dollar of income.
Expected Retirement Tax Bracket
Enter the tax rate you expect to pay in retirement. This is the key variable. If you expect to be in a lower bracket (22% or less), the Traditional IRA often wins. If you expect to be in the same or higher bracket, the Roth IRA usually wins.
Annual Contribution
Enter how much you plan to contribute per year. For 2026, the limit is $7,000 ($8,000 with catch-up if 50 or older). The same limit applies to both Roth and Traditional IRAs.
Expected Rate of Return
Enter the annual return you expect from your investments. The default of 7% reflects the long-term average of a diversified stock portfolio.
Formula
For the Traditional IRA, the after-tax future value is:
FV_Trad = (B \u00d7 (1 + r)^n + PMT \u00d7 [((1 + r)^n \u2212 1) / r]) \u00d7 (1 \u2212 t_retire)
For the Roth IRA, the after-tax future value is:
FV_Roth = B \u00d7 (1 + r)^n + PMT \u00d7 [((1 + r)^n \u2212 1) / r]
Where B is current balance, r is monthly rate of return, n is months to retirement,PMT is monthly contribution, andt_retire is your expected retirement tax rate. The Traditional IRA result is reduced by the retirement tax rate, while the Roth IRA result is not taxed at all.
Examples
Example 1: Young Worker, Lower Bracket Now
Age 28, current bracket 22%, expected retirement bracket 24%, $6,000/year contribution, 7% return, 37 years to retirement. Traditional IRA after-tax value: $456,000. Roth IRA value: $606,000. The Roth wins by $150,000 because you pay 22% now instead of 24% later, and the tax-free growth compounds over 37 years.
Example 2: High Earner, Lower Bracket in Retirement
Age 45, current bracket 35%, expected retirement bracket 22%, $7,000/year contribution, 7% return, 20 years to retirement. Traditional IRA after-tax value: $274,000. Roth IRA value: $287,000. The Traditional IRA is very close because the large tax savings now (35% deduction) nearly offset the lower retirement rate. With a Traditional 401k deduction, Traditional wins.
Example 3: Same Bracket Now and Later
Age 35, current bracket 24%, expected retirement bracket 24%, $7,000/year contribution, 7% return, 30 years. Traditional IRA after-tax value: $354,000. Roth IRA value: $466,000. The Roth wins by $112,000 because tax-free compounding over 30 years is extremely powerful when the tax rates are the same.
Tips
The Roth Wins More Often Than You Think
Many people assume they will be in a lower tax bracket in retirement, but this is not always true. Required Minimum Distributions, Social Security taxation, investment income, and potential tax law changes can keep your retirement tax rate close to or higher than your current rate. Unless you are certain your rate will drop significantly, Roth is often the safer bet.
Consider Tax Diversification
Having both Traditional and Roth accounts gives you flexibility in retirement. You can withdraw from whichever account is most tax-efficient each year. For example, in years where you have large deductible expenses, you might withdraw from Traditional accounts. In other years, Roth withdrawals keep your taxable income low.
Factor in State Taxes
If you live in a high-tax state now but plan to retire in a no-income-tax state (like Florida or Texas), the Traditional IRA may be more attractive because you get the deduction at a high state rate and pay only federal taxes in retirement. Conversely, if you live in a no-tax state now and will retire in a high-tax state, Roth is clearly better.
Don\u2019t Ignore the No-RMD Advantage
The Roth IRA\u2019s lack of Required Minimum Distributions is a powerful estate planning tool. You can let the account grow indefinitely and pass it to heirs tax-free. A Traditional IRA forces you to withdraw starting at 73, triggering taxes regardless of whether you need the income.
FAQ
What is the main difference between a Roth and Traditional IRA?
The main difference is when you pay taxes. A Traditional IRA gives you a tax deduction now and taxes your withdrawals in retirement. A Roth IRA uses after-tax dollars but allows tax-free withdrawals in retirement. The best choice depends on whether you expect to be in a higher or lower tax bracket in retirement.
Which is better for someone in their 20s?
For most young workers, the Roth IRA is the better choice. You are likely in a lower tax bracket now than you will be in retirement, so paying taxes now (Roth) rather than later (Traditional) results in less total tax paid. Plus, Roth IRAs have no Required Minimum Distributions, giving you more flexibility.
Which is better for high-income earners?
High-income earners who exceed Roth IRA income limits often use a Traditional IRA (if not covered by a workplace plan) for the tax deduction, or a backdoor Roth IRA strategy. If you are covered by a 401k and your income is high, a non-deductible Traditional IRA combined with a Roth conversion may be optimal.
What if I think my tax rate will be lower in retirement?
If you expect to be in a lower tax bracket in retirement, the Traditional IRA is generally better because you get the tax deduction at your current higher rate and pay taxes at the lower retirement rate. This is common for high-income professionals who plan to significantly reduce their lifestyle in retirement.
Can I have both a Roth and Traditional IRA?
Yes, you can have both types of IRA simultaneously. The combined annual contribution limit applies across both accounts ($7,000 or $8,000 with catch-up for 2026). Many people use both for tax diversification — Traditional for the immediate deduction and Roth for tax-free income later.
Does the 4% rule apply differently to Roth vs Traditional?
The 4% rule applies the same way in terms of withdrawal amount, but the tax treatment differs. From a Traditional IRA, the 4% withdrawal is fully taxable as income. From a Roth IRA, the 4% withdrawal is entirely tax-free. This means a Roth IRA effectively provides more after-tax income per dollar withdrawn.
How do RMDs affect the Roth vs Traditional decision?
Traditional IRAs require you to start taking distributions at age 73, whether you need the money or not. These RMDs are taxable and can push you into a higher tax bracket, increase Medicare premiums, and make Social Security benefits taxable. Roth IRAs have no RMDs during the owner’s lifetime, giving you complete control over when and how much you withdraw.
What about estate planning with Roth vs Traditional?
Roth IRAs are generally superior for estate planning because beneficiaries receive the inheritance tax-free. Traditional IRA beneficiaries must pay income tax on inherited distributions. This can result in a significantly larger net inheritance from a Roth IRA, especially if the beneficiary is in a high tax bracket.
Should I convert my Traditional IRA to a Roth?
A Roth conversion makes sense if you expect to be in a higher tax bracket in retirement, want to avoid RMDs, or want to leave tax-free assets to heirs. The conversion triggers taxes on the converted amount, so it is best done during years when your income is lower than usual. Consult a tax professional for your specific situation.
What if I am close to retirement — which should I choose?
If you are within 5–10 years of retirement, the calculation is more nuanced. You have less time for Roth’s tax-free growth to compound. A Traditional IRA may be better if you need the immediate tax deduction and will be in a significantly lower bracket in retirement. Model both scenarios with our calculator to see which saves more for your situation.