Retirement

Roth IRA Calculator

Project what a Roth IRA grows to by retirement, the balance and the gain from years of tax-free compounding.

  • Free
  • No sign-up
  • Updated for 2026

Your Roth IRA

$
$

contributed each month

%
yr

Enter your balance, contribution, return and years to project the total.

Worked example

With these example inputs:

  • Current balance$0
  • Monthly contribution$500
  • Expected annual return7%
  • Years to retirement30 yr

Balance at retirement: $609,986

  • Starting amount$0
  • Total contributions$180,000
  • Total interest$429,986
  • Total growth238.9%

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What this Roth IRA calculator does

This calculator estimates your balance at retirement. You enter your current balance, a monthly contribution, a return, and the years left. The tool then shows the total in your currency. It reveals how your account can grow. This is a key retirement tool. You can test different figures. The result helps you plan ahead.

What a Roth IRA is

A Roth IRA is a retirement account with a tax twist. You pay it with money already taxed. The balance then grows free of tax. Qualified withdrawals in retirement are tax-free. So it is a powerful long-term tool. It is built for the future. It is shown in your currency.

How it is calculated

The tool starts with your current balance. It adds your monthly contribution along the way. It applies your return each period. Each gain joins the balance and earns more. The cycle repeats until you retire. The calculator does this for you.

What the result tells you

The result shows your balance at retirement. Five hundred a month at a steady return grows a lot. Over thirty years it can pass six hundred thousand. A higher return or more years lifts it. So it shows what your plan can become. It is a clear final figure.

Tax-free growth

The big draw of a Roth is tax-free growth. Your gains are not taxed as they build. Qualified withdrawals are tax-free too. So more of the growth stays yours. This figure does not subtract any tax. So your true gain can be larger. That is the Roth advantage.

Why compounding matters

Compounding makes your returns earn their own returns. Each gain is added to the base. The next gain is bigger as a result. The effect grows over the decades. So an early start has a huge edge. It is the engine of long-term wealth. Patience is richly rewarded.

Monthly contributions

A steady monthly contribution drives the growth. Each one joins the compounding base. So it adds fuel year after year. Even a small one adds up. A bigger one reaches the goal sooner. So regular saving is powerful. Set an amount you can keep.

How to use it

Enter your current balance first. Add the monthly contribution, return, and years. Read your balance at retirement in your chosen currency. See how the balance grows over time. Then adjust the inputs and look again. Compare a few returns. Use it to plan ahead.

The limits of this calculator

Every tool has its limits. It assumes a steady return every year. Real returns rise and fall. It ignores annual contribution caps. It does not adjust for inflation. So treat it as a guide. So read the result with a clear head.

Common mistakes to avoid

A common mistake is assuming a smooth return. Markets are far from steady. Another is ignoring the yearly cap. There is a limit on what you add. Some start too late. Others forget inflation over time. A clear number keeps you from these slips.

A final tip

Use this to plan your retirement. Remember the growth is tax-free in a Roth. Start as early as you can. Add a steady monthly contribution. Treat the return as an average, not a promise. Do not forget the yearly cap. Checking the inputs sharpens the result.

Frequently asked questions

How is a Roth IRA taxed?

You contribute after-tax money, and qualified withdrawals in retirement are tax-free, so the growth shown here is not reduced by tax later.

Is there a contribution limit?

Yes, the IRS sets an annual Roth IRA contribution limit that can change each year and phases out at higher incomes. Check the current limit before maximising.

What is the difference between a Roth and a traditional IRA?

A Roth is funded with after-tax money and grows tax-free, while a traditional IRA may be deductible now but is taxed on withdrawal.

When can I withdraw from a Roth IRA?

You can take out your contributions anytime. Earnings come out tax-free once you are 59 and a half and have held the account for five years.

Does this account for inflation and market swings?

It is a projection at a steady return. Real markets rise and fall, and inflation lowers the real value of the balance.