Roth IRA Calculator
Calculate your Roth IRA balance at retirement with completely tax-free growth and no Required Minimum Distributions. Compare head-to-head against a traditional IRA on an after-tax basis. The winner depends on whether your tax rate is higher now or in retirement — the calculator shows the exact dollar difference for your specific situation.
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How It Works
Roth IRA contributions use money you have already paid taxes on. You get no deduction today, but all growth and withdrawals in retirement are completely tax-free — including decades of compounded gains.
Roth balance = Contribution × (1+r)^n (no future taxation)$7,000/yr for 30yr at 7% = $707,000 tax-freeIn a Roth IRA, dividends, capital gains, and interest compound without any annual tax drag. Over 30 years, this tax-free compounding on a large balance can add hundreds of thousands of dollars versus a taxable account.
Roth FV = Contribution × (1+r)^n vs Taxable = Contribution × (1+r(1-t))^n7% Roth vs 5.46% taxable (22% tax): $707K vs $505K in 30yrThe comparison inverts the contribution: what would the same after-tax dollars buy in a traditional IRA? If you contribute $7,000 post-tax to Roth, the equivalent pre-tax traditional contribution is $7,000/(1-tax rate). The winner depends on tax rates now versus retirement.
Roth wins if tax now < tax in retirement; Traditional wins if tax now > tax in retirement22% now, 15% in retirement: Traditional wins. 22% now, 25% later: Roth wins.Unlike traditional IRAs and 401(k)s, Roth IRAs have no Required Minimum Distributions during the owner's lifetime. You can let the account grow indefinitely, passing it tax-free to heirs. This is especially valuable for people who do not need the income.
No forced withdrawals at 73 — full control over timing$1M Roth at 73 with no RMD = continues compounding tax-freeSingle filers earning above $161,000 in 2024 cannot contribute directly to a Roth IRA. The backdoor strategy involves making a non-deductible traditional IRA contribution and immediately converting to Roth — legally circumventing the income limit.
Non-deductible Traditional IRA → convert to Roth (no tax if no pre-tax IRA funds)$7,000 non-deductible IRA → immediate Roth conversion = $0 taxRoth IRA earnings can only be withdrawn tax and penalty-free once the account is at least 5 years old AND you are 59½ or older. Contributions (not earnings) can always be withdrawn tax and penalty-free at any time for any reason.
Qualified distribution: age 59½+ AND account 5+ years oldOpened at age 40, fully qualified distributions at age 45 (after 5yr) + 59½Quick Reference
Common examples — verify instantly above.
$7K/yr for 30yr at 7%
Tax-free Roth balance
$707,000
$7K/yr for 40yr at 7%
Tax-free Roth balance
$1,480,000
2025 contribution limit
Under age 50
$7,000/yr ($583/mo)
2025 limit, age 50+
With catch-up
$8,000/yr ($667/mo)
22% now → 15% retirement
Roth vs Traditional result
Traditional wins (deduction worth more now)
22% now → 28% retirement
Roth vs Traditional result
Roth wins (avoid higher future tax)
Income limit (single 2024)
Direct Roth contribution
Phase-out $146K-$161K
No RMD advantage
$500K at 73 vs Traditional
Roth: keep growing; Trad: forced withdrawal
Tips & Shortcuts
Open a Roth IRA as early as possible — the 5-year clock starts on January 1 of the first year you contribute, so opening even a $1 Roth IRA today starts the clock.
Roth IRAs are the best retirement accounts for young workers in low tax brackets who expect to earn more and be taxed more heavily later in their careers.
Use Roth IRA contributions as an emergency fund of last resort — contributions (not earnings) can be withdrawn tax and penalty-free at any time, providing flexibility unavailable in a 401(k).
If you are above the income limit, use the backdoor Roth strategy: contribute to a non-deductible traditional IRA and immediately convert to Roth before any earnings accumulate.
Consider Roth conversions in low-income years — sabbaticals, early retirement years before Social Security, or years with large deductions can be ideal for converting traditional IRA funds to Roth at lower rates.
Roth IRAs are excellent for estate planning — heirs inherit the account tax-free, making it one of the most valuable assets you can leave. Consider contributing to a Roth even if you do not need the retirement income yourself.
Common Mistakes to Avoid
Choosing traditional IRA without comparing after-tax outcomes
The Roth vs traditional decision depends entirely on your current versus expected retirement tax rate. The calculator shows the exact dollar difference for your specific situation — use it before deciding.
Not contributing because income seems too high without checking backdoor option
High earners above the Roth income limit can still use the backdoor Roth strategy. Contribute to a non-deductible traditional IRA and immediately convert to Roth. It is fully legal and widely used.
Withdrawing Roth IRA earnings before age 59½
Withdrawing earnings before 59½ triggers a 10% penalty plus income taxes on the earnings portion. Only contributions (not earnings) are always withdrawal-friendly. Plan to leave earnings untouched until qualified.
Not using the Roth IRA as a flexible emergency fund layer
If you have maxed a Roth IRA for several years, accumulated contributions are available penalty-free at any time. This makes the Roth a secondary emergency fund without sacrificing retirement growth.
Assuming the Roth is always better than traditional
If you are in the 32% to 37% bracket now and expect to be in the 22% bracket in retirement, the traditional IRA deduction is worth more. Model both scenarios before committing.
Missing the Roth IRA contribution deadline by confusing calendar year with tax year
You can contribute to a Roth IRA for the prior tax year until Tax Day (April 15) of the following year. Many people miss this — if you did not contribute in 2024, you have until April 15, 2025 to do so.
Frequently Asked Questions
Anyone with earned income can contribute if their income is below the threshold. Single filers phase out between $146,000 and $161,000 in 2024. Married filing jointly phases out between $230,000 and $240,000. Above the limit, use the backdoor Roth strategy via a non-deductible traditional IRA conversion.
To withdraw earnings tax and penalty-free, the account must be at least 5 years old AND you must be 59½ or older. The 5-year clock starts January 1 of the first year you make any contribution. Contributions (not earnings) can always be withdrawn tax and penalty-free at any age.
Yes. Contributing to a 401(k) does not affect Roth IRA eligibility if your income is within limits. Most advisors recommend: first max the 401(k) to capture employer match, then max the Roth IRA, then additional 401(k) up to the IRS limit.
Roth wins when your current tax rate is lower than your expected retirement tax rate. Also better when you want tax-free income in retirement, no RMDs, or a tax-free inheritance for heirs. Traditional wins when you are in a high bracket now and expect lower taxes in retirement.
Yes. First-time homebuyers can withdraw up to $10,000 in earnings penalty-free (though taxes may apply if under 5 years). Contributions are always withdrawal-friendly. The $10,000 lifetime limit applies to earnings only, not contributions.
Place your highest-growth, highest-return investments in the Roth IRA since all gains are tax-free. Growth stocks, small-cap funds, and other aggressive assets belong in Roth. Bonds and dividend-paying stocks are better in tax-deferred accounts where ordinary income is shielded until withdrawal.
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