Roth IRA Calculator
Calculate Roth IRA growth and check your 2026 contribution eligibility by income. See tax-free balance at retirement using the current $7,500 IRS limit.
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Adjust values to see instant results
Additional Details
Tax-Free Balance at Retirement
$1,127,807.00
Estimated • Based on your inputs
Tax-Free Growth
$867,807.00
Detailed Breakdown
Disclaimer: This calculator provides estimates for informational purposes only. Results should not be considered financial, tax, or legal advice. Consult a qualified professional for your specific situation.
How This Calculator Works
Calculation methodology and assumptions
Projects Roth IRA growth using annual compounding of contributions (capped at the lesser of your input and your IRS-allowed maximum) at your expected return. Roth IRA contribution limits for 2026 are $7,500 ($8,600 if 50+), phased out entirely above the IRS income limit for your filing status. Because qualified Roth withdrawals in retirement are tax-free, no retirement tax rate is applied.
How to Use This Investment & Retirement Calculator
- 1
Enter your initial investment
Input the lump sum you plan to invest today. This is your starting principal that will begin compounding immediately.
- 2
Set your monthly contribution
Enter the amount you plan to add each month. Consistent contributions accelerate growth through dollar-cost averaging.
- 3
Input expected return and time horizon
Set your expected annual return (7–10% for stocks historically, 4–6% for bonds) and investment period. Longer time horizons amplify compounding effects dramatically.
- 4
Review the growth projection
The results show your total invested amount, earnings from compound growth, and a year-by-year projection table showing how your money grows over time.
Example Calculation
How does compound interest build wealth over time?
Starting with $10,000 and adding $500/month at an 8% average annual return for 30 years: Your total contributions would be $190,000 ($10K initial + $180K in monthly deposits). But with compound growth, your portfolio would grow to approximately $745,000.
Result: Compound interest generated $555,000 in earnings on top of your $190,000 in contributions — nearly 75% of the final value came from returns, not deposits. Starting 5 years later would reduce the final amount by roughly $230,000. Time in the market is the most powerful factor in wealth building.
What Affects Your Results
Rate of Return
Even small differences compound massively over time. 7% vs. 8% over 30 years on $100K means a difference of $200K+. Asset allocation drives your expected return.
Time Horizon
Compounding accelerates exponentially. Most of your wealth is generated in the final years — a 30-year investment earns more in its last 5 years than its first 15.
Contribution Consistency
Regular monthly investments (dollar-cost averaging) smooth out market volatility and ensure you're always buying — including during dips when prices are low.
Fees & Expenses
A 1% annual fee vs. 0.1% fee on a $500K portfolio costs you $4,500/year extra. Over 30 years, high fees can consume 25–30% of potential returns. Use low-cost index funds.
Tips & Best Practices
- Start early. Thanks to compounding, $200/month invested from age 25 to 65 at 8% returns grows to ~$700K. Waiting until 35 cuts that to ~$300K — a $400K penalty for the 10-year delay.
- Don't try to time the market. Research consistently shows that time in the market beats timing the market. Missing the 10 best trading days over 20 years can halve your returns.
- Consider tax-advantaged accounts first: 401(k) (especially with employer match), IRA, HSA. These reduce your tax drag — a 25% tax bracket investor keeps more in a tax-deferred account.
- Rebalance annually. If stocks outperform and grow from 80% to 90% of your portfolio, rebalancing back to 80% locks in gains and manages risk.
- Factor in your state's tax treatment of investment income. Some states exempt certain investment income or have lower rates on capital gains.
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StateCalc Team
Editorial Team
The StateCalc team builds free financial calculators using data from official government sources including the IRS, U.S. Census Bureau, BLS, and state revenue departments. All formulas are validated by an automated test suite and cross-referenced against published data.
Our editorial standardsFrequently Asked Questions
What is the Roth IRA contribution limit for 2026?
The Roth IRA limit for 2026 is $7,500 (or $8,600 if you're 50 or older), same as the Traditional IRA limit — the two share a combined annual limit if you contribute to both.
What are the Roth IRA income limits for 2026?
For 2026, the ability to contribute directly to a Roth IRA phases out between $153,000-$168,000 of modified AGI for single filers and heads of household, and between $242,000-$252,000 for married couples filing jointly. Above the top of the range, direct contributions aren't allowed (a "backdoor Roth" conversion is a separate strategy).
Roth IRA vs. Traditional IRA — which is better?
Roth IRA contributions are made with after-tax dollars but grow and withdraw completely tax-free in retirement — generally favorable if you expect to be in the same or a higher tax bracket later. Traditional IRA contributions may be tax-deductible now, but withdrawals are taxed as ordinary income — generally favorable if you expect a lower tax bracket in retirement. Use our Traditional IRA Calculator to compare.
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