Roth IRA Calculator

How this Roth IRA calculator works

The calculator projects two things and adds them together: your current Roth IRA balance compounded until your retirement age, and the future value of the annual contributions you plan to keep making. It assumes contributions are made once a year, returns compound annually, and your expected return stays constant.

Real markets rise and fall, so treat the result as a planning range rather than a prediction. Try a lower and a higher return rate to see how wide that range can be.

Tips to grow a Roth IRA

• Start early and stay consistent. Time in the market is the single biggest lever in the math above — an extra decade of compounding often outweighs a larger contribution later.
• Automate your contributions. Monthly transfers spread your buying across the year and make it far more likely you reach the annual amount you planned.
• Keep costs low. Fees come straight out of your return. Low-cost, broadly diversified funds leave more of the growth in your account.
• Invest the cash you deposit. Contributing is only step one; money left sitting uninvested in the account will not compound.
• Check the limit each year. The IRS adjusts contribution limits and income phase-outs periodically, so confirm the current figures before you fund the account.

Roth IRA calculator FAQ

How does a Roth IRA grow over time?

Money inside a Roth IRA is invested, and any interest, dividends, and gains compound year after year. Because qualified withdrawals in retirement are tax-free, decades of compounding can matter more than the size of any single contribution.

How much can I contribute to a Roth IRA?

The IRS sets an annual contribution limit that is adjusted periodically, with an additional catch-up amount for people age 50 and older. Check the current limit on IRS.gov before you contribute, since it can change from year to year.

What return rate should I use in the calculator?

Many people model a long-term average somewhere in the 5% to 8% range for a diversified portfolio. Real markets do not return the same amount each year, so try a few rates to see a realistic range rather than a single number.

Are Roth IRA withdrawals really tax-free?

Qualified withdrawals are generally tax-free if you are at least 59 and a half and the account has been open at least five years. Contributions can usually be withdrawn at any time, but earnings withdrawn early may be taxed and penalized.

Can I contribute to a Roth IRA if I earn too much?

Direct Roth contributions phase out above certain income levels. Some higher earners use other strategies, which carry tax consequences, so it is worth reviewing your situation with a qualified tax professional.

Is this Roth IRA calculator free to use?

Yes. The calculator is free and runs entirely in your browser. Results are estimates based on the numbers you enter and assume steady annual compounding.