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Retirement

Roth IRA Calculator

See how your Roth IRA grows completely tax-free — and how much the tax advantage is worth over your career.

Updated June 2026 · Editorial standards

Your details

$
$

2024 limit: $7,000 ($8,000 if 50+). Currently contributing 86% of the $7,000 limit.

%
Projected balance
$994,247
Tax-free growth
$774,247
Total contributions
$220,000
Monthly income (4%)· 4% rule
$3,314

Your Roth IRA grows to $994,247 completely tax-free. That's $774,247 you'll never owe taxes on.Contributing $6,000/year for 35 years — the 4% rule gives you $3,314/month in tax-free retirement income.

Roth IRA growth to retirement

Contributions vs growth

Contribution rate

Under-contributingMaxed out
Maximizing$6,000 / yr

Contributing $6,000/year — 86% of the 2024 $7,000 limit. Max it out to fully harness tax-free growth.

By the KalkWise Editorial Team Reviewed for accuracy Updated June 2026

What is the roth ira calculator?

In short

A Roth IRA grows completely tax-free — you contribute after-tax dollars, but all growth and qualifying withdrawals in retirement are never taxed. In 2024 you can contribute up to $7,000 per year ($8,000 if you're 50 or older). At 7% average return, $6,000/year for 30 years grows to over $600,000 — all of which you keep.

This Roth IRA calculator projects your account balance year by year, shows how much of your final balance is tax-free growth, and estimates your monthly retirement income using the 4% withdrawal rule.

How to use this calculator

  1. 1Enter your current age and target retirement age.
  2. 2Add your current Roth IRA balance (0 if starting fresh).
  3. 3Enter your planned annual contribution (2024 limit: $7,000).
  4. 4Set your expected annual return (7% is a conservative long-term estimate).
  5. 5Review your projected balance and tax-free growth breakdown.

The formula

B=(B+C)×(1+r)n
monthly income=B×4%12
Each year your balance grows by the annual return, then your contribution is added. Because a Roth IRA uses after-tax dollars, all growth is permanently tax-free.
B
— Balance at end of year
r
— Annual return rate
C
— Annual contribution

Worked example

The scenario

Start at age 30 with $10,000, contribute $6,000/year, earn 7% annually, retire at 65.

gives

The result

Projected balance: ~$1.06M. Total contributions: $220,000. Tax-free growth: ~$840,000. Monthly income (4% rule): ~$3,500/month.

Common use cases

  • Projecting retirement savings with no future tax liability
  • Comparing Roth vs traditional IRA over different time horizons
  • Seeing the compounding value of maxing contributions early
  • Planning income in retirement when tax rates may be higher

Limitations & assumptions

  • Income limits apply: in 2024 single filers earning over $161,000 cannot contribute directly.
  • The 7% default return is not guaranteed — actual market returns vary year to year.
  • Roth IRA conversions and backdoor Roth strategies are not modeled here.

Frequently asked questions

The 2024 Roth IRA contribution limit is $7,000 per year, or $8,000 if you're age 50 or older (the $1,000 catch-up contribution). This is a combined limit across all your IRAs (Roth and traditional together).

Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.