IRA Calculator

IRA Calculator: Plan Your Retirement Savings Growth

An IRA Calculator projects how an Individual Retirement Account grows over time based on your current balance, annual contribution, expected annual return, and the number of years until retirement. It does not guarantee outcomes — all projections are estimates based on the constant return rate you enter. For a broader savings projection outside of retirement accounts, see our Savings Calculator.

All results are illustrative estimates only. Actual investment returns vary and are not guaranteed. This calculator does not constitute financial, tax, or legal advice.

What Is an IRA?

An Individual Retirement Account (IRA) is a tax-advantaged account designed to help individuals save for retirement independently of employer-sponsored plans. There are two primary types, each with different tax treatment:

• Traditional IRA: Contributions may be tax-deductible depending on income and workplace plan coverage. Growth is tax-deferred — you pay income tax on withdrawals in retirement.
• Roth IRA: Contributions are made with after-tax dollars. Qualified withdrawals in retirement are tax-free if you are at least 59½ and the account has been open for five or more years.

This calculator projects pre-tax growth (the account balance before any withdrawal taxes). The tax treatment at withdrawal differs between account types — consult a tax professional for guidance specific to your situation.

How to Use This Calculator

• Current Age and Retirement Age: The years between these two numbers become the projection horizon. Retirement Age must exceed Current Age.
• Current IRA Balance: What you've already saved in the account. Enter 0 if you're starting fresh.
• Annual Contribution: The amount you plan to contribute each year. The 2025 IRS limit is $7,000 (or $8,000 if you're age 50 or older). Enter 0 to project growth of an existing balance only.
• Expected Annual Return (%): Your estimated average annual investment return. A commonly used benchmark for diversified portfolios is 6–8%, though actual results vary significantly by asset allocation and market conditions.
• Contribution Timing: "End of Year" assumes contributions are deposited at year-end; "Beginning of Year" assumes they're deposited at the start, gaining one extra year of compounding.

At least one of Current IRA Balance or Annual Contribution must be greater than zero.

How Long-Term Compounding Works in an IRA

Compound growth means each year's returns are reinvested and earn returns themselves. In a tax-advantaged IRA, this compounding is uninterrupted by annual taxes on dividends or capital gains — the full balance compounds year after year until withdrawal.

The effect becomes dramatic over long periods. A $10,000 balance at 7% annual return grows to approximately:

• 10 years: ~$19,700
• 20 years: ~$38,700
• 30 years: ~$76,100

Each additional decade roughly doubles the balance, even without any new contributions. This is why starting early — even with small amounts — has such an outsized long-term impact. To set a specific target balance and work backwards to find the required annual contribution, use our Savings Goals Calculator.

The Importance of Time Horizon

Of all variables, time is the most powerful. Consider two savers contributing $6,000/year at 7% annual return:

• Saver A starts at 25 and saves for 40 years → projected balance: ~$1.27 million
• Saver B starts at 35 and saves for 30 years → projected balance: ~$567,000

Saver A contributed only $60,000 more (10 additional years × $6,000) but accumulated more than double the balance — the extra decade of compounding accounts for the difference. These are illustrative projections based on a constant 7% annual return; actual results will vary.

IRA Growth Formula

The calculator uses the standard future value formula for a lump sum plus recurring contributions:

FV = P × (1 + r)^t + C × [((1 + r)^t − 1) ÷ r]

• P: Current IRA balance
• C: Annual contribution
• r: Annual rate of return (decimal)
• t: Years to retirement

For end-of-year contributions, growth applies to the existing balance only each year; the contribution is added at year-end. For beginning-of-year, the contribution is added first, then the full balance (including contribution) grows through the year.

Illustrative Example

The following is an illustrative example — enter your own values above for a personalized projection:

• Current Age: 35  |  Retirement Age: 65
• Current Balance: $20,000  |  Annual Contribution: $7,000
• Expected Annual Return: 7%  |  Contribution Timing: End of Year

Using end-of-year contributions at 7% for 30 years: the $20,000 initial balance grows to approximately $152,400, and the annual $7,000 contributions accumulate to approximately $566,400 — giving a combined estimated balance of approximately $718,800. Actual returns vary; this is a projection based on a constant 7% rate. Use the calculator above to generate a full year-by-year table for your inputs.

IRA Contribution Limits (2025)

• Under age 50: $7,000 per year
• Age 50 and older: $8,000 per year (including a $1,000 catch-up contribution)

Contribution limits are reviewed annually by the IRS and may increase with inflation. Income limits also apply to Roth IRA eligibility and the deductibility of Traditional IRA contributions — consult IRS Publication 590-A or a tax professional for current thresholds.

Traditional IRA vs. Roth IRA: Key Differences

This calculator projects the gross account balance (pre-tax for Traditional, tax-paid for Roth). It does not model the after-tax value difference between account types. A financial advisor can help you compare outcomes net of taxes based on your specific situation.

What the Results Show

• Estimated Retirement Balance: Projected account value at retirement age, using the return rate you entered.
• Total Contributions: All annual contributions added over the savings period (does not include the current balance).
• Investment Growth: The portion of the final balance attributable to compounded returns rather than deposits.
• Estimated Annual & Monthly Income: A reference figure using the 4% safe withdrawal rate — a widely cited guideline for sustainable retirement income. This is illustrative only, not financial advice.

The year-by-year table below the summary shows your opening balance, annual contribution, investment growth, and closing balance for each year of the projection period.

Tips to Maximize IRA Growth

• Start as early as possible. Each additional year of compounding has a multiplier effect — starting at 25 instead of 35 can more than double the outcome.
• Contribute the maximum allowed every year. Consistent maximum contributions, especially with beginning-of-year timing, accelerate growth significantly.
• Choose beginning-of-year timing when possible. Contributing in January rather than December gives each dollar an additional 11+ months of compounding per year.
• Use catch-up contributions once you turn 50. The additional $1,000/year is small but compounds meaningfully in the 10–15 years before typical retirement.
• Use a conservative return assumption for planning. A 6–7% assumption is more robust across different market cycles than optimistic higher-return projections.

Frequently Asked Questions

What return rate should I use in the calculator?

A commonly used planning assumption for a diversified investment portfolio (e.g., a mix of stocks and bonds) is 6–8% annually. However, actual returns fluctuate year to year — some years are much higher, others negative. The calculator uses a constant rate as a simplifying assumption. Lower assumptions produce more conservative (and often more realistic) planning scenarios. Past returns do not guarantee future performance.

Can I contribute to both a Traditional IRA and a Roth IRA in the same year?

Yes, but the combined contribution across both accounts cannot exceed the annual limit ($7,000 in 2025, or $8,000 if you're age 50 or older). You do not get a separate limit for each account type.

What is the difference between beginning-of-year and end-of-year contributions?

Beginning-of-year contributions are deposited on January 1 (or as early in the year as possible), giving them 12 months of growth before year-end. End-of-year contributions are deposited on December 31, earning no growth in that calendar year. Over a 30-year horizon, consistently choosing beginning-of-year timing can meaningfully increase the final balance.

Does this calculator apply to 401(k) accounts?

The underlying math — compound annual growth with recurring contributions — is the same for 401(k) accounts. The IRS contribution limits differ ($23,500 in 2025 for a 401(k) vs. $7,000 for an IRA), but you can enter any contribution amount that reflects your actual plan. The growth projection logic is identical.

What is the 4% withdrawal rate shown in the results?

The 4% rule is a widely cited retirement planning guideline suggesting that withdrawing 4% of a retirement portfolio per year is likely to sustain the balance for 30+ years of retirement. It is based on historical market research and is a rough benchmark — not a guarantee. Your actual sustainable withdrawal rate will depend on investment returns, inflation, and spending needs in retirement.

How does this compare to a Savings Calculator?

Our Savings Calculator uses monthly compounding and monthly contributions, making it better suited to modeling savings accounts, CDs, or other products with monthly interest. This IRA Calculator uses annual contributions and annual compounding, which matches how IRA contributions and investment returns typically work. For a target-amount approach — where you set a specific goal and find the required annual contribution — see the Savings Goals Calculator.

Related Calculators

• Savings Calculator — project how a lump sum and monthly contributions grow with compound interest
• Savings Goals Calculator — set a target balance and calculate the required annual or monthly contribution to reach it
• Savings Income Calculator — estimate sustainable monthly income from a retirement or savings balance
• Personal Loan Calculator — compare the cost of borrowing against the long-term opportunity cost of saving
• Minimum Payment Calculator — quantify credit card interest costs to decide how much to allocate toward retirement savings vs. debt

Final Thoughts

An IRA is one of the most tax-efficient vehicles available for long-term retirement savings, and the earlier you start contributing, the more powerful the compound growth becomes. This calculator gives you a concrete, year-by-year projection based on your inputs — use it to explore different contribution levels, return assumptions, and retirement ages to find a savings strategy that fits your goals. All results are estimates; consult a qualified financial advisor for personalized retirement planning advice.

Enter your current age, retirement age, balance, and expected return above to project your IRA growth.