CALCIDA

Roth IRA Calculator

Written by Calcida Team
Reviewed by Financial Review Process
Last updated: April 2026

Calculations are rooted in standard financial formulas and are provided as educational estimates only. They do not constitute professional financial advice. Results may vary based on actual interest rates and fees. You should verify all numbers with a certified financial professional prior to making significant financial commitments. Read our editorial commitment →

Estimate Roth IRA growth over time based on contributions, return rate, and years invested.

Built specifically for savers projecting retirement account growth with annual contributions, this engine analyzes Starting balance, Annual contribution, Return rate, Years to output estimated future account balance.

Context:Retirement CalculatorsMain DirectoryRetirement Calculator: Plan Your Financial Future401(k) Calculator: Project Your Retirement Savings

Projected Balance

$321,044
Total contributions: $135,000
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How This Calculator Works

This calculator projects your Roth IRA balance at retirement using compound interest on your annual contributions. Because Roth IRA growth and qualified withdrawals are tax-free, the projected balance represents money you can actually spend — not a pre-tax figure.

What This Calculator Models

  • Starting balance: Any existing Roth IRA balance compounds throughout the projection.
  • Annual contributions: Each year you add the contribution amount, which then compounds at your chosen return rate.
  • Compounding: Returns compound annually. The longer the time horizon, the more dramatic the effect of compounding.
  • Inflation adjustment: The tool can show real (inflation-adjusted) results to help you understand actual buying power at retirement.
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Formula

FV = PV(1 + r)^n + PMT × [ ((1 + r)^n − 1) / r ]
PV
starting balance Description
PMT
periodic contribution Description
r
periodic return rate Description
n
number of periods Description

Example Calculation

Example: Starting at Age 30, Contributing $500/Month

Annual contribution$6,000
Starting balance$0
Annual return assumption7%
Years until retirement (age 65)35 years
Projected Balance at 65~$945,000
Total contributions$210,000
Tax-free growth~$735,000

*All $945,000 is available tax-free in retirement. A Traditional IRA of the same balance would net approximately $700,000 after a 26% effective retirement tax rate.

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Roth IRA Strategy: Maximize Your Tax-Free Wealth

  • Start as early as possible. Compounding is exponential. $7,000 contributed at age 22 grows to over $150,000 by age 65 at 7% — without adding another dollar.
  • Always contribute at least enough to max out. In 2026, the max is $7,000 ($8,000 if 50+). Front-load contributions early in the year when possible to maximize compounding.
  • Use the Backdoor Roth if over the income limit. High earners above the phase-out threshold can make a non-deductible Traditional IRA contribution and immediately convert it to Roth.
  • Choose high-growth investments. Because the Roth is tax-free, put your highest-expected-return assets (small-cap equities, REITs) here and lower-return assets in taxable accounts.

Related Retirement Calculators

401(k) CalculatorProject your employer-matched retirement savings.Traditional IRA CalculatorCompare growth with pre-tax Traditional IRA contributions.Retirement CalculatorEstimate total retirement savings from all sources.Compound Interest CalculatorVisualize the power of compounding on any investment.
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