Roth IRA Calculator
Last updated: June 2026 · Free · No sign-up required
Enter values above and click Calculate to see your result instantly.
Quick reference
2026 Roth IRA contribution limits:
| Limit / phaseout | Amount |
|---|---|
| Contribution (under 50) | $7,000 |
| Contribution (50+) | $8,000 |
| Single phaseout (MAGI) | $150,000–$165,000 |
| Married filing jointly | $236,000–$246,000 |
savings Plan with confidence
Finance decisions get a lot easier when you can see the full picture. Enter your numbers above to see total payments, interest paid, and the long-term cost of every choice — so you can compare options side by side before signing anything.
percent How the math works
We use the standard amortization, compound-interest and present-value formulas published by the Consumer Financial Protection Bureau and the Federal Reserve. The methodology block below shows every variable and rounding step we apply, so the answer is never a black box.
shield_lock Your data stays private
Every calculation happens in your browser with JavaScript — your income, balances, and loan numbers are never sent to our servers, logged, or shared. Close the tab and the inputs vanish. No sign-up, no tracking pixels on the form, no spreadsheet emailed to you later.
lightbulb Pro tip
Save the URL after you calculate — your inputs aren't stored, so write down the headline number plus the breakdown. Then come back and edit one variable at a time (down payment, rate, term) to see exactly which lever moves your monthly figure the most. That's where the real planning happens.
Interpretation guide
Why a Roth IRA is powerful:
| Feature | Benefit |
|---|---|
| Tax-free withdrawals | Qualified withdrawals in retirement are not taxed |
| No RMDs | No required minimum distributions for the owner |
| Contribution access | You can withdraw your contributions anytime |
| Tax diversification | Balances pre-tax accounts in retirement |
Formula & methodology
Formula: FV = sum of each year's contribution x (1 + r)^(years remaining)
A Roth IRA is funded with after-tax dollars, so qualified growth and withdrawals are completely tax-free. The calculator compounds each annual contribution to retirement age at your assumed return. Because no tax is owed on the back end, a Roth is especially valuable if you expect to be in a similar or higher tax bracket later, or want decades of untaxed compounding.
Authoritative source: IRS Roth IRA Guide