IRA Calculator🇺🇸

What a traditional IRA calculator is actually estimating

A traditional IRA is a tax-deferred retirement account. Contributions may be deductible, investment growth is not taxed year by year inside the account, and withdrawals are generally taxed as ordinary income in retirement. That makes a realistic traditional IRA worksheet different from a simple compound-interest calculator, because the planning question is not just how large the balance might become, but how much of that balance may still be available after distribution taxes later on.

This page therefore keeps three planning layers visible at the same time. First, it projects the pre-tax balance at retirement from your starting balance, annual contributions, catch-up contributions, and assumed return. Second, it estimates a current-year tax-saving amount based on the deductible contribution you entered and your current marginal tax rate. Third, it applies your retirement tax-rate assumption to estimate an indicative after-tax retirement value, which is often the more decision-useful number when comparing traditional IRA savings with a Roth IRA or a taxable brokerage account.

Contribution caps, catch-up rules, and deduction caveats

The IRS sets one annual contribution limit across your traditional and Roth IRA accounts combined. For 2026, the regular IRA contribution limit is 7,500, and people aged 50 or older can add a 1,100 catch-up amount for a total of 8,600. This calculator uses those 2026 limits as a planning cap so the annual contribution path does not quietly assume a contribution level that exceeds the current federal rule set.

That does not mean every dollar is automatically deductible. Whether a traditional IRA contribution is fully deductible can depend on filing status, income, and whether you or your spouse are covered by a workplace retirement plan. The current-year tax-saving figure on this page is therefore a simplified best-case estimate that assumes the deductible contribution amount is actually deductible at your stated marginal tax rate. If income-based phase-outs or employer-plan coverage reduce the deduction, the real near-term tax benefit may be lower than the estimate shown here.

How to interpret the pre-tax balance and the after-tax estimate

The projected balance is the tax-deferred account value before any withdrawal taxes are applied. That figure helps with contribution pacing and long-range portfolio-size planning, but it can overstate the amount you may actually be able to spend in retirement if you read it as cash in hand. The after-tax retirement estimate is not a tax return calculation; it is a practical planning bridge that applies your entered retirement tax rate to the projected balance so you can compare the account on a more consumption-based basis.

The taxable-account comparison serves a different purpose. It asks what a similar contribution stream might look like if gains were taxed every year instead of compounding tax-deferred inside the IRA. That comparison is intentionally simplified, but it helps make the tax-deferral advantage visible. If the difference between the traditional IRA path and the taxable path is small, you may need to revisit the contribution amount, expected return, or retirement horizon. If the gap is large, the traditional IRA may be doing exactly the job you want it to do: deferring taxes while the portfolio compounds over time.

Worked example: suppose you are 35, plan to retire at 65, already have 10,000 in a traditional IRA, contribute 7,500 each year, expect a 7% long-term return, face a 24% marginal tax rate today, and expect an 18% rate in retirement. The calculator compounds the account over 30 years, caps contributions to the IRS limit when needed, estimates the potential current-year deduction value from the contribution assumption, and then applies the retirement tax rate to the projected balance to show a more realistic retirement-spending estimate.

This page also adds a today's-dollars view of the after-tax result. That matters because a future IRA balance can sound impressive without saying much about the spending power it may actually support. Discounting the future value by an inflation assumption gives you a more decision-useful baseline when you are comparing a traditional IRA with current retirement-income goals rather than with other nominal account balances.

When a traditional IRA usually looks stronger than a Roth IRA

The usual traditional-versus-Roth question is not which account grows faster on paper. It is whether the deduction you receive today is likely to be more valuable than the taxes you expect to pay later. If your current marginal tax rate is clearly higher than the effective rate you expect in retirement, a traditional IRA often has the stronger immediate tax case because each deductible contribution reduces higher-taxed income now and pushes the tax cost into a lower-rate period later.

If the opposite seems true, or if the rates look very close, the decision is less obvious. In that situation, factors such as contribution eligibility, expected future income, flexibility around tax-free withdrawals, and whether you value the deduction today may matter more than the simple headline projection. That is why the page shows both the current-year deduction estimate and the after-tax retirement value rather than just one future-balance number.

This does not mean the calculator is making a tax recommendation. It is giving you the pieces that most people need for a first-pass comparison: the possible deduction now, the approximate spendable value later, and the taxable-account baseline that shows what tax-deferred compounding may be worth if the contribution is genuinely deductible.

Contribution-room checks, catch-up timing, and late-start planning

Many IRA pages tell you the annual limit but do not turn that into an actual planning checkpoint. A more useful worksheet shows how much of the current-year cap your contribution assumption is using, whether you are relying on an age-50 catch-up amount yet, and how many years remain before catch-up contributions can begin. Those details matter most for savers who are trying to increase retirement saving quickly or who want to know whether they are already funding the account at the current IRS maximum.

That is especially relevant for late-start savers. If you are in your forties or fifties and trying to close a retirement gap, the IRA may still be a valuable tax-advantaged bucket, but the annual cap is modest compared with many workplace plans. A strong traditional IRA calculator should therefore help you see both the benefit and the limitation: tax-deferred growth is useful, yet you may still need a 401(k), SEP IRA, taxable account, or a longer time horizon to reach a larger target.

Catch-up contributions do not solve everything, but they can materially improve the projection for savers who are close to age 50 and still building retirement assets. Showing the first catch-up-eligible year makes the timeline more concrete than simply mentioning the rule in passing.

What this traditional IRA estimate does not cover

This projection assumes a constant annual return, steady yearly contributions, and a single current tax rate plus a single retirement tax rate. Real retirement planning is more complicated. Markets are uneven, contribution amounts change, tax laws change, and retirement withdrawals may land across several tax brackets rather than one flat percentage. This page is meant to be a planning baseline, not a substitute for tax software or personalised advice.

It also does not model required minimum distributions, nondeductible contributions with basis tracking, Roth conversions, early-withdrawal penalties, or income-based deduction phase-outs. If those issues affect your decision, use this page as a first-pass projection and then pair it with IRA deduction worksheets, retirement-withdrawal planning, and professional tax guidance before acting.

The inflation-adjusted result is also only as good as the inflation assumption you enter. It is not predicting what inflation will be. Its purpose is to help you compare a future IRA balance with present-day spending power so you can make better planning judgments than a nominal balance alone would allow.