IRA Calculator

How an IRA Grows Over Time

A Traditional IRA (Individual Retirement Account) is a tax-advantaged account you open independently, outside of any employer plan. Every dollar you contribute has the chance to grow through compound investment returns for as long as it stays in the account, and every year's growth then compounds again on top of the year before — which is why an IRA's growth curve looks flat in the early years and accelerates the longer the money is left invested.

IRA vs. 401(k): The Key Differences

Both are retirement accounts with tax advantages, but they differ in a few important ways. A 401(k) is sponsored by an employer and often comes with a matching contribution — essentially free money added on top of yours. An IRA has no employer involved at all: you open it yourself at a brokerage, choose your own investments from a much wider selection than most 401(k) plans offer, and contribute up to a lower annual limit than a 401(k) allows. Many savers use both — a 401(k) up to the employer match, then an IRA for additional tax-advantaged savings.

The Compound Growth Formula

Your final balance combines what your starting balance grows into on its own, plus what each year's contribution grows into as it compounds for whatever time remains.

$$A = P(1+r)^n + C \cdot \frac{(1+r)^n - 1}{r}$$

This calculator computes the same result month by month rather than plugging directly into the formula, so the year-by-year table and chart above show an exact running balance at every step.

Accounting for Fund Expense Ratios

The mutual funds, index funds, or ETFs held inside an IRA typically charge their own annual expense ratio, deducted automatically from the fund's returns rather than billed separately. The optional Expense Ratio field subtracts that fee directly from your expected annual return before the projection runs, so the "Projected Balance" and "Effective Annual Rate" above reflect your real, after-fee growth rate rather than the fund's advertised headline return. Leave it at 0 for a fee-free projection, or if you don't yet know the specific expense ratio of the funds you plan to hold.

Worked Example: 5,000 Dollars Start + 6,500 Dollars/Year at 7% for 30 Years

Using the calculator's own default numbers — a 5,000-dollar starting balance, contributing 6,500 dollars a year, growing at 7% annually for 30 years — the balance reaches roughly 701,400 dollars at the end. Of that, only about 200,000 dollars came directly from contributions (the 5,000-dollar start plus 30 years of 6,500-dollar contributions); the remaining roughly 501,400 dollars is investment growth compounding on top of both the starting balance and every contribution made along the way.

2026 IRA Contribution Limits

The IRS sets an annual limit on how much you can contribute to an IRA, currently around 7,500 dollars for those under 50 and around 8,600 dollars for those 50 and older, with the extra amount known as a catch-up contribution. These limits can change from year to year with inflation adjustments — this calculator compares your entered "Annual Contribution" against these reference figures and shows a warning if it's exceeded, but always check the current IRS limit before assuming a larger contribution is allowed.

Traditional vs. Roth: Which Is Right for Me?

A Traditional IRA, the type this calculator models, uses pre-tax (often deductible) contributions and taxes withdrawals as ordinary income in retirement. A Roth IRA flips that: contributions are made with after-tax dollars, but qualified withdrawals in retirement, including all the growth, come out completely tax-free. Broadly, a Traditional IRA tends to favor someone who expects to be in a lower tax bracket in retirement than they are today, while a Roth tends to favor someone who expects to be in the same or a higher bracket later — though income limits, other accounts, and personal circumstances all matter too. The Roth IRA Calculator runs the same style of projection using after-tax contributions, so you can compare both side by side with your own numbers.

Is an IRA Alone Enough for Retirement?

For most savers, an IRA is one piece of a larger retirement-income picture rather than the whole plan. The Social Security Calculator estimates your likely Social Security benefit, and the 401(k) Retirement Calculator projects an employer-sponsored account if you have one — adding all three projected income sources together gives a rough sense of whether your total retirement income, not just this IRA balance alone, is likely to be enough.

Common IRA Mistakes

Contributing inconsistently, or only in years you remember to, gives up years of compounding that can never be recovered later — an automatic monthly or per-paycheck contribution avoids this. Leaving IRA funds in cash instead of investing them is another quiet cost, since cash sitting uninvested inside the account earns little to nothing while the years pass. And withdrawing early, before the IRS's allowed retirement age, often triggers both income tax and an additional penalty, on top of losing all the future compounding that withdrawal would have earned.

IRA Terms You Should Know

Traditional IRA — an IRA funded with pre-tax (often deductible) contributions, where withdrawals in retirement are taxed as ordinary income.

Contribution Limit — the maximum amount the IRS allows you to contribute to an IRA in a given year, which can differ by your age.

Catch-Up Contribution — an additional amount savers age 50 and older are permitted to contribute beyond the standard annual limit.

Required Minimum Distribution (RMD) — the minimum amount a Traditional IRA owner must start withdrawing annually once they reach the IRS's required starting age.

Rollover — moving funds from one retirement account (such as an old 401(k)) into an IRA without triggering taxes or penalties.

This calculator provides estimates for educational and planning purposes only. Actual amounts may vary based on real investment performance, fees, and contribution timing. It is not tax or financial advice — consult a qualified professional and verify current-year contribution limits with the IRS.