How Much Can a Roth IRA Grow? Tax-Free Growth Explained

Published October 12, 2026

Free tool: Roth IRA Calculator→

A Roth IRA is a retirement account you fund with money you've already paid tax on. In exchange, the growth is tax-free, and so are qualified withdrawals in retirement. Over decades, that tax-free growth can be worth hundreds of thousands of dollars. This guide shows how much, using the free Roth IRA Calculator.

Example: $7,500 a year from age 30

You're 30, have $5,000 in a Roth IRA and contribute $7,500 at the start of each year until 65, earning 7% a year:

• Roth IRA at 65: $1,162,734
• Total contributions: $262,500
• Tax-free growth: $895,234

The value of tax-free growth

The calculator compares the Roth with the same after-tax money in a regular taxable account, with returns taxed every year at 22%:

• Taxable account at 65: $818,445
• Roth advantage: $344,288

The comparison is a simplification: in a real taxable account, long-term gains and qualified dividends are often taxed at lower rates, and gains aren't taxed until you sell, so the true advantage is usually smaller. But it shows why tax-free compounding is valuable.

Starting early matters

Starting the same plan at 40 instead of 30 leaves you with about $534,711 at 65, less than half as much, and a Roth advantage of about $113,481. The ten extra years of contributions at the start come with the most time to compound.

Key Roth IRA rules

• 2026 limit: you can contribute up to $7,500, or $8,600 if you're 50 or older, across all your IRAs, and no more than your earned income.
• Income limits: the amount you can contribute is reduced and then eliminated at higher incomes; check the IRS's current ranges.
• Withdrawals: you can take out your contributions at any time, tax- and penalty-free. Earnings are tax-free once you're 59½ and the account has been open at least five years.
• No required minimum distributions for the original owner, unlike traditional IRAs.
• Deadline: contributions for a tax year can be made until the tax filing deadline the following April.

Roth or traditional?

• Roth: pay tax now, withdraw tax-free later. Often better if you expect a higher tax rate in retirement, or you're early in your career.
• Traditional IRA: possibly deduct contributions now and pay tax on withdrawals. Often better if your tax rate is high now and you expect it to be lower later.

Many people hold both to have flexibility over taxes in retirement. For a workplace plan, see How Much Will My 401(k) Be Worth?

How to use the Roth IRA Calculator

1. Open the Roth IRA Calculator.
2. Enter your age, retirement age and current balance.
3. Enter your yearly contribution, made at the start of each year, and the expected return.
4. Enter a tax rate for the taxable-account comparison and the inflation rate, which raises the IRS limit over time.
5. Choose whether to cap contributions at the IRS limit.
6. Read the results: your Roth IRA at retirement, total contributions, tax-free growth, the same money in a taxable account and the Roth advantage, with a chart comparing the Roth with a taxable account, a breakdown of contributions and growth, and a year-by-year table.

Frequently asked questions

How much will my Roth IRA be worth?

Contributing $7,500 a year from 30 to 65 at a 7% return could grow to about $1.16 million, all tax-free to withdraw after 59½ once the account is five years old.

What is the Roth IRA contribution limit for 2026?

$7,500, or $8,600 if you're 50 or older, subject to income limits and your earned income.

Can I withdraw money from a Roth IRA early?

You can withdraw your contributions at any time without tax or penalty. Withdrawing earnings early can trigger tax and a 10% penalty, with some exceptions.