How the Roth IRA Growth Calculator Works
Korea's credit union deposit exemption gives interest on up to 30 million won a low tax rate. The U.S. doesn't have that specific mechanism, but the Roth IRA offers an arguably bigger tax-free benefit: every dollar of growth inside the account, not just interest but dividends and capital gains too, is completely tax-free as long as you take qualified withdrawals after age 59 1/2 and the account has been open at least 5 years.
This calculator lets you enter your annual contribution, expected return, years invested, and a comparison tax rate to see the future value of a Roth IRA side-by-side with an equivalent taxable brokerage account where gains are taxed every year at your chosen rate. The gap between the two totals is the real dollar value of tax-free compounding over time.
Keep in mind the 2024 Roth IRA contribution limit is $7,000 per year ($8,000 if you're 50 or older), and eligibility phases out above certain income levels -- check current IRS limits and consider a backdoor Roth conversion if you earn too much to contribute directly.
Frequently Asked Questions
Not exactly the same mechanism, but a Roth IRA offers a comparable benefit: contributions grow completely tax-free, and qualified withdrawals after age 59 1/2 are not taxed at all -- unlike Korea's deposit-based exemption, it applies to investment growth, not just interest.
Yes. For 2024 the limit is $7,000 per year ($8,000 if you're 50 or older), and eligibility phases out at higher income levels -- check the current IRS limits before contributing.