What Is an IRA Calculator?

An IRA calculator projects the future value of your Individual Retirement Account based on annual contributions, current balance, expected return, and time horizon. Whether you have a Traditional IRA (pre-tax contributions) or Roth IRA (after-tax contributions), understanding how compound growth works over decades is essential for retirement planning.

How IRA Growth Is Calculated

IRA Future Value = (Current Balance × (1 + r)^n) + (Annual Contribution × [(1 + r)^n − 1] / r). Where r = annual return rate, n = years. Tax savings for Traditional IRA = Total Contributions × Tax Rate. Roth IRA benefit = all withdrawals in retirement are completely tax-free.

Understanding Your Results

The gap between contributions and future value is pure compound interest — this is the magic of tax-deferred or tax-free growth. Starting early has an outsized effect: $7,000/year at 7% for 35 years grows to ~$1 million. The same contributions for only 25 years reach ~$455,000. A 10-year head start nearly doubles the outcome.

2024 IRA Rules and Limits

Contribution limit: $7,000 ($8,000 age 50+). Roth income limits: phaseout at $146,000–$161,000 (single), $230,000–$240,000 (married). Traditional deductibility phases out if covered by workplace plan. RMDs start at 73 for Traditional; Roth has no RMDs.

Traditional vs. Roth — The Tax Math

If your tax rate is higher now than in retirement, Traditional wins. If you expect the same or higher rate in retirement, Roth wins. Young earners in the 22% or lower bracket almost always benefit more from Roth. High earners in the 32%+ bracket often benefit from Traditional deductions today.