Roth IRA calculator
What a Roth IRA could grow to by retirement, tax-free.
About this calculator
This Roth IRA calculator projects what a Roth IRA could be worth when you retire. Enter your current balance, yearly contribution, age and expected return.
Because qualified withdrawals are tax-free, it also shows roughly how much tax you save on the growth.
How it works
Each year’s contribution is added at the start of the year and the balance grows at the expected return. Qualified withdrawals from a Roth IRA are tax-free, so the tax saved is the growth × your tax rate.
Last reviewed:
Worked example
- Current balance: $5,000
- Yearly contribution: $7,000
- Current age: 30 years
- Retirement age: 65 years
- Expected return: 6% a year
- Tax rate you avoid on withdrawals: 22%
At age 65: $865,277 (tax-free to withdraw)
Common questions
What is a Roth IRA?
A US individual retirement account funded with money you've already paid tax on. The growth and qualified withdrawals in retirement are tax-free.
How much can I put in a Roth IRA?
The IRS sets a yearly limit, with a higher limit from age 50, and the amount you can contribute falls at higher incomes. Check the current figures on the IRS website.
Roth or traditional IRA?
A Roth suits people who expect a similar or higher tax rate in retirement. A traditional IRA gives the tax break now instead. Many people use both.
Sources and further reading
The story behind it
Where the idea came from: The Roth IRA is named after US Senator William Roth of Delaware, who sponsored it in the Taxpayer Relief Act of 1997.
Roth wanted a retirement account where savers paid tax up front and never again. It quickly became one of the most popular ways for Americans to save, especially for younger people with decades of tax-free growth ahead.
Why you can trust this calculator
- It runs in your browser. Nothing you type into it is sent anywhere.
- The method is explained on this page, so you can check it yourself.
- Free to use, with no sign-up.
- Results are estimates, not financial advice.
- Spotted a mistake? Tell us and we'll look into it.
After 15 years as a mathematics educator, I built CalculStore to give students, teachers, professionals and anyone working with numbers simple, reliable tools.
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