Roth IRA Calculator
Calculate your Roth IRA balance at retirement and see the tax-free advantage compared to saving the same amount in a taxable account over the same period.
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Enter your values above to see the results.
Tips & Notes
- ✓Max out the Roth IRA before contributing beyond the employer match to a traditional 401k — the tax-free growth advantage compounds more powerfully at younger ages.
- ✓If your income exceeds the Roth IRA limit ($161,000 single, $240,000 married in 2024), the backdoor Roth — contributing to a traditional IRA then converting — is a legal alternative.
- ✓Roth IRA contributions (not earnings) can be withdrawn at any time without penalty — the account functions as a secondary emergency fund while still building retirement wealth.
- ✓Holding highest-growth assets inside the Roth IRA maximizes the tax-free advantage — every dollar of growth on high-return assets inside the Roth avoids taxation permanently.
- ✓Roth IRA has no required minimum distributions during the owner lifetime — the money can compound indefinitely unlike traditional IRA which forces withdrawals starting at age 73.
- ✓Converting a traditional IRA to Roth during low-income years — early career, gap years, early retirement before Social Security — is often optimal because the conversion tax is paid at a lower rate.
Common Mistakes
- ✗Not contributing because the tax benefit is not immediate — the tax-free compounding advantage over 30 years dwarfs the current-year deduction of a traditional IRA for most young investors.
- ✗Withdrawing Roth earnings before age 59.5 — while contributions can be withdrawn penalty-free, earnings withdrawn before 59.5 are subject to income tax and a 10% penalty.
- ✗Not contributing because of perceived income uncertainty — even modest annual Roth contributions of $1,000-$2,000 compound significantly over 30-40 years.
- ✗Holding low-return assets like bonds inside a Roth while holding stocks in taxable accounts — the highest-growth assets should be inside the Roth to maximize tax-free compounding.
- ✗Forgetting to invest the Roth IRA contributions — contributing to the account but leaving it in cash earns nothing; the contribution must be invested in a fund or securities.
- ✗Choosing a traditional IRA over Roth when in a low tax bracket — younger earners in the 12-22% bracket who expect higher income in retirement almost always benefit more from the Roth.
Roth IRA Calculator Overview
A Roth IRA is the most tax-efficient savings vehicle available to most Americans. You contribute after-tax dollars, the money grows completely tax-free, and qualified withdrawals in retirement are never taxed — not even on decades of compound growth. The advantage over a taxable account grows larger with every passing year of compounding.
This calculator shows your projected Roth IRA balance and the dollar difference that tax-free growth produces compared to saving the same amount in a taxable account at your marginal rate.
What each field means:
- Annual Contribution — the amount contributed each year; 2024 limit is $7,000 ($8,000 if age 50 or older)
- Current Balance — existing Roth IRA balance; benefits from the full remaining compounding period
- Return Rate — expected annual investment return; use 6-7% for a diversified index fund portfolio
- Tax Rate — your current marginal tax rate; used to calculate the taxable account equivalent
- Years — years until retirement; determines the length of tax-free compounding
What your results mean:
- Roth IRA Balance — projected tax-free balance at retirement
- Taxable Account Equivalent — what the same contributions would produce in a taxable account after annual tax drag on dividends and capital gains
- Tax-Free Advantage — the dollar difference between Roth and taxable account outcomes
- Total Contributed — all annual contributions across the full period
Example — $6,000/year, $15,000 current balance, 7% return, 25% tax rate, 30 years:
Roth IRA projected balance: $867,000 Taxable account equivalent: $683,000 Tax-free advantage: $184,000 Total contributed: $180,000 All $867,000 withdrawn tax-free in retirement Taxable account withdrawal at 25% rate: pay $59,250+ in taxes on gains True after-tax advantage of Roth: $243,000+
EX: Roth vs taxable account — $6,000/year at 7%, 30 years, different tax rates 15% tax rate: Roth $867k vs taxable $759k — Roth advantage $108,000 25% tax rate: Roth $867k vs taxable $683k — Roth advantage $184,000 35% tax rate: Roth $867k vs taxable $607k — Roth advantage $260,000 The higher your tax rate, the more the Roth advantage compounds over time.
Roth IRA balance by contribution and years — 7% return, $15,000 starting balance:
| Annual Contribution | 20 years | 30 years | 40 years |
|---|---|---|---|
| $3,000 | $193,000 | $424,000 | $867,000 |
| $6,000 | $251,000 | $587,000 | $1,248,000 |
| $7,000 | $263,000 | $627,000 | $1,343,000 |
Tax-free advantage by tax rate and time — $6,000/year, 7% return:
| Tax Rate | 20-year advantage | 30-year advantage | 40-year advantage |
|---|---|---|---|
| 15% | $28,000 | $108,000 | $338,000 |
| 25% | $46,000 | $184,000 | $569,000 |
| 35% | $64,000 | $260,000 | $800,000 |
The Roth IRA has one additional advantage that no calculator fully captures: flexibility. Unlike traditional IRAs and 401k plans, Roth IRAs have no required minimum distributions during the owner lifetime. The money can continue compounding indefinitely, be passed to heirs tax-free, or be accessed in retirement only as needed rather than on the IRS schedule. This flexibility has real financial value beyond the tax-free growth itself.
Frequently Asked Questions
A Roth IRA is an individual retirement account where contributions are made with after-tax dollars and all qualified withdrawals in retirement are completely tax-free, including all growth. In 2024, the contribution limit is $7,000 per year ($8,000 if age 50 or older). Income limits apply: single filers with MAGI above $161,000 cannot contribute directly; the limit phases out between $146,000 and $161,000. Married filing jointly phases out between $230,000 and $240,000. Above these limits, the backdoor Roth conversion strategy provides an alternative path.
Traditional IRA contributions may be tax-deductible, growth is tax-deferred, and withdrawals in retirement are taxed as ordinary income. Roth IRA contributions are after-tax with no current deduction, growth is tax-free, and qualified withdrawals are never taxed. Traditional IRA requires minimum distributions starting at age 73; Roth IRA has no RMDs during the owner lifetime. For young investors expecting higher future income, Roth is typically superior. For those in peak earnings years expecting lower retirement income, traditional may be advantageous.
In 2024, direct Roth IRA contributions phase out for single filers with MAGI between $146,000 and $161,000, and for married filing jointly between $230,000 and $240,000. Above the upper limits, direct contributions are prohibited. Above-limit earners can use the backdoor Roth strategy: contribute to a non-deductible traditional IRA (no income limit) and then convert to Roth. This works cleanly when you have no other traditional IRA assets — if you do, the pro-rata rule applies and the conversion may be partially taxable.
Roth IRA contributions (not earnings) can be withdrawn at any time, at any age, without taxes or penalties — you already paid tax on them. Earnings on contributions can be withdrawn penalty-free and tax-free at age 59.5 or older, if the account has been open at least 5 years. Withdrawing earnings before 59.5 triggers income tax plus a 10% penalty, with exceptions for disability, first-time home purchase up to $10,000, and certain other circumstances. The ability to withdraw contributions anytime makes a Roth IRA function as a secondary emergency fund while still building for retirement.
The decision hinges on whether you expect your tax rate to be higher now or in retirement. If higher now, traditional provides more value because you get the deduction at a high rate and pay tax in retirement at a lower rate. If higher in retirement, Roth is superior because you pay tax at the lower current rate and avoid the higher future rate on all growth. For most young earners in the 12-22% bracket who expect career income growth, Roth wins. For peak earners in the 32-37% bracket who expect significantly lower income in retirement, traditional may be more advantageous.
The backdoor Roth is a legal two-step strategy for high earners who exceed the income limits for direct Roth IRA contributions. Step 1: contribute to a non-deductible traditional IRA (no income limit applies). Step 2: immediately convert the traditional IRA to a Roth IRA. If done promptly and if you have no other traditional IRA assets, the conversion is tax-free because the basis equals the contribution. The pro-rata rule complicates this if you have existing pre-tax traditional IRA assets — the conversion is partially taxable based on the ratio of pre-tax to after-tax IRA assets.