IRA Calculator: Estimate Traditional vs Roth Balance

How the Traditional IRA Calculator Estimates Your Retirement Savings

An individual retirement account is a government-backed way to save for retirement with a tax break attached. The calculator takes the money you already hold, the amount you add each year, the age you stop contributing and the return you expect, then grows everything year by year. It then applies your tax rates so you can compare the account types on an after-tax basis rather than on headline balances alone. Unlike generic IRA calculators that stop at a single growth figure, this one keeps the pre-tax and after-tax views side by side, because the tax shields built into these accounts are the whole reason to use them. If you want to see how the figures change, the roth ira conversion with distributions calculator gives you an instant result you can adjust as you go.

Starting Balance

Your starting balance is what your IRA account holds today. If you are opening your first account, enter zero. Money rolled in from an old employer plan counts here, because it begins compounding the moment the projection starts.

Annual Contribution

The annual contribution is what you plan to deposit every year. The tool assumes each deposit lands at the beginning of the year, so it earns a full year of growth. Contributions stop in the year before you retire, which means a retirement at 67 ends with a final deposit at age 66.

Expected Rate of Return

The expected rate of return is the average yearly gain on your investments after fees. A stock-heavy portfolio and a bond-heavy one will not earn the same, so treat this as an estimate you revisit rather than a promise. Because growth compounds, a small change in this figure moves the final balance more than most people expect.

Current Tax Rate and Retirement Tax Rate

Your current tax rate decides how much a tax deduction is worth today, and your retirement tax rate decides what you give back when you withdraw. Most people earn less in retirement than during their working years, so the marginal tax rate they face later is often lower than the one they pay now. This gap is the single biggest driver of the traditional-versus-Roth result.

Age and Retirement Age

Your current age and retirement age set the number of years the money compounds. Starting ten years earlier usually matters more than adding a little to each deposit, since early dollars have the longest runway.

The Formula Behind an IRA Savings Calculator

Each year the projection adds your deposit to the running balance and then applies the yearly return. Written as a formula, the balance after one year is: The 72t calculator uses the same plain-English approach, so you can compare results side by side.

$$B_{n} = (B_{n-1} + C) \times (1 + r)$$

Here B is the balance, C is your annual contribution and r is the rate of return. The calculation repeats once for every year until your retirement age. For a traditional account, the withdrawal is then reduced by your retirement tax rate \(t_{r}\):

$$\text{After-tax balance} = B_{final} \times (1 - t_{r})$$

Why Roth and Taxable Savings Use After-Tax Dollars

A Roth IRA is funded with after-tax dollars, so the same out-of-pocket cost buys a smaller deposit. To compare fairly, the starting balance and each deposit are multiplied by \((1 - t_{c})\), where \(t_{c}\) is your current tax rate. Regular taxable savings follow the same rule, with one extra penalty: the yearly earnings are taxed too, so the effective return becomes \(r \times (1 - t_{c})\).

Worked Example: Traditional IRA, Roth IRA and Taxable Account

Before the numbers, note how the calculator treats growth, because it shows why investing early pays off. Each year's gain is added to the balance and the next gain is earned on the larger total, so the money compounds on itself in the projection. The result is that contributions made in your forties do far more work than the ones made in your sixties, and steady contributions build real wealth even from modest yearly amounts.

Take a saver aged 41 who plans to retire at 67. They hold $18,400, deposit $6,200 a year, expect a 6.4% return, face a 24% current tax rate and expect an 18% retirement tax rate. Over 26 years they contribute $161,200 in total, and the projection produces the following balances.

Reading the Result

At 67 the traditional account holds $506,419 before tax. After an 18% income tax on withdrawals, that is $415,263, which beats the Roth balance of $384,878 by $30,385. The Roth in turn finishes $89,149 ahead of the taxable account, which ends at $295,729. Of the $506,419, about $326,819 is pure growth rather than money you put in.

What the Result Means for Your Taxes

The gap between the columns is entirely a story about taxes. The traditional saver defers the bill and pays it at 18%, the Roth saver pays 24% up front, and the taxable saver pays 24% up front and again on every year of earnings. The tax benefits of an IRA are therefore largest when a long horizon gives the shelter time to work.

When the Roth Wins Instead

The ranking flips when your retirement tax rate is higher than your current one. Raise the retirement rate in the example from 18% to 26% and the traditional after-tax balance drops to $374,750, which is below the Roth figure. Run both versions through the Roth IRA calculator view of your own numbers before you choose.

Traditional IRA vs Roth IRA: Which Account Fits You

Both accounts are tax-sheltered, so growth is not hit by yearly taxes and each beats a taxable account over a long horizon. They differ in when the tax bill arrives.

Traditional IRA

Contributions to a traditional IRA may be tax-deductible, which gives you immediate tax savings, and the money enjoys tax-deferred growth. You pay income tax on withdrawals. Withdrawals are penalty-free after age 59½, and the account carries a required minimum distribution once you reach the starting age set by the IRS.

Roth IRA

A Roth IRA takes after-tax deposits, so there is no deduction now, but tax-free withdrawals later. It has no mandatory distributions during the owner's lifetime, which is why many savers use it to leave money to beneficiaries. The money can also be a hedge if tax rates rise.

Which Account Is Better for You?

• Choose traditional if you expect a lower tax rate in retirement, want a tax deduction this year, or are close to retirement.
• Choose Roth if you expect a higher tax bracket later, are early in your career, or value tax-free income.
• Split between both if you cannot predict your future tax rate; this diversifies your financial planning.

A Bookkeeper Runs the Calculator on Traditional vs Roth Retirement Savings

A 53-year-old freelance bookkeeper has until 65 to decide where this year's deposit goes. Their adjusted gross income is $74,200, they have no employer plan, and last year's return put them in the 22% bracket. They already hold $87,350 in an old rollover account, and because they are over 50 the $8,600 limit, which includes the $1,100 catch-up contribution, is available.

In the calculator they enter a starting balance of $87,350, an annual contribution of $8,600, 12 years to retirement and a 5.5% expected rate of return. For the tax fields they type a current rate of 22% and a retirement rate of 12%, a figure taken from their expected Social Security plus part-time income.

The traditional account finishes $31,474 ahead of the Roth once withdrawals are taxed. Before acting, the bookkeeper checks the deduction. Because the income sits below the $81,000 start of the 2026 single-filer phase-out, the full $8,600 is deductible, which lowers this year's tax bill by $1,892.

They then rerun the projection with one change, a retirement rate of 22%. The after-tax traditional balance falls to $245,495, exactly the Roth figure, so the 12% assumption is the only thing creating the lead. The next step is concrete: open the traditional account, deposit the $8,600 and revisit the retirement rate each year as the income plan firms up.

IRA Contribution Limits and Phase-Out Ranges for 2026

The IRS caps how much you can add across all your IRA accounts in one year. For 2026 the contribution limit is $7,500, and savers aged 50 or older may add a catch-up contribution of $1,100 for a total of $8,600. Your deposit also cannot exceed your taxable income for the year.

Income Limits and Phase-Out Ranges

Your adjusted gross income and filing status control whether you can deduct a traditional deposit when you or your spouse are covered by an employer plan, and whether you can contribute to a Roth IRA directly. The Roth test uses modified adjusted gross income. Inside each phase-out range, the allowed amount shrinks until it reaches zero.

If You Earn Too Much for a Roth

High earners above the limit sometimes use a backdoor Roth: a non-deductible deposit into a traditional account that is later converted. The conversion adds to your taxable income for that year, so run the numbers before you convert.

Max Out Your Contribution Each Year

To test a maxed-out plan, enter $7,500 (or $8,600 if you are 50 or older) in the annual contribution field. Because the tool assumes deposits arrive at the start of each year, early contributions give each dollar its full year of growth, and automated contributions are easier to sustain than ones you make by hand.

Maxing out the allowed amount means roughly $625 a month under the $7,500 cap. Leaving that room unused permanently forfeits the tax shelter for that year, because unused contribution limits do not carry forward.

The Yearly Value of the Deduction

The deduction is easy to quantify. In the worked example, a $6,200 deposit at a 24% current tax rate lowers that year's tax bill by $1,488, so the real out-of-pocket cost is $4,712. That is exactly why the Roth and taxable columns start from $4,712 rather than $6,200: every option costs the saver the same amount of take-home pay, and only the timing of the tax differs.

Mistakes That Skew Your Projection

• Entering a rate of return far above what a diversified portfolio has delivered over decades.
• Using the same tax rate for today and retirement, which erases the main difference between the account types.
• Ignoring the contribution ceiling and projecting deposits the IRS will not allow.
• Forgetting that fees reduce the return you actually keep each year.

Careful investing starts with honest inputs. Rerun the calculator with a cautious return, a realistic retirement tax rate and a deposit you can sustain, then compare it with your expected spending in retirement to see whether the plan holds up.

Other Types of Retirement Plan: SEP IRA, SIMPLE IRA and More

A traditional-style projection also fits several employer-linked plans, which share the same tax treatment on balance, accumulation and distribution.

SEP IRA

A SEP IRA is set up by an employer, and it suits self-employed people and small businesses because it is simple to administer. For 2026 the limit is the lesser of 25% of compensation or $72,000, contributions are deductible as a business expense, and everything is immediately vested. There is no catch-up for savers over 50.

SIMPLE IRA

A SIMPLE IRA is built for businesses with 100 or fewer employees and has lower costs than a 401(k). The employer must pick a 3% match or a fixed 2% of every worker's pay as a company match, and the employee limit is $17,000. The early withdrawal penalty is 25% during the first two years, compared with the standard 10% penalty for other IRAs.

IRA Rollovers

IRA rollovers let you consolidate an employer-sponsored plan, such as 401(k)s, 403(b)s or 457 plans, into one traditional account without tax when the transfer is direct. Report the rollover on your tax return even if no tax is due, because unreported moves can trigger extra taxes. Keep investing the combined balance through the same plan afterward. Roth and traditional money should stay in separate accounts. In the calculator, add the rolled-over amount to the starting balance.

Inherited IRA

An inherited IRA passes to heirs with its own distribution rules, and the timeline for emptying it depends on who the beneficiary is. This projection does not model those distribution rules, so if you inherit an account, enter its current value as the starting balance and treat the result as a rough growth estimate only.

Self-Directed IRA

A self-directed IRA allows assets beyond the usual mix, such as real estate or private companies. It carries extra rules and risk, and it is not a good place to begin if you are new to saving. Because returns on unusual assets are hard to predict, use a cautious figure in the expected rate of return field.

Comparison to a 401(k)

Most 401(k)s are defined contribution plans with a higher limit of $24,500 for 2026 and often an employer match. Its drawback is a short menu of funds and higher fees. An IRA offers almost limitless investment options, and you can usually fund both in the same year. To model a 401(k) with this tool, enter its higher limit as the annual contribution and keep the same return and tax rates.

Investment Options Inside an Individual Retirement Account

The account is only a container. Investing choices inside it drive the rate of return you should plug into any investment calculator or IRA projection.

Stocks, Bonds and Mutual Funds

• Stocks offer higher potential growth and more risk, and picking single names is an active approach not suited to most beginners.
• Bonds pay interest with steadier returns, but they may barely outpace inflation over decades.
• Mutual funds pool money under a fund manager, while index funds track a market index at lower cost.
• ETFs trade like stocks and hold a basket of assets, with dividends paid out or reinvested.
• CDs lock in a fixed interest rate for a set term, which protects your principal but rarely beats inflation.

Map your mix to the return field: a bond- or CD-heavy portfolio supports a lower yearly figure, a stock-heavy one a higher figure, and the calculator applies that single number to every year.

Investment Goal and Investment Length

Your investment goal, such as a specific nest egg at a specific age, and your investment length together decide how much market risk makes sense. A longer horizon can absorb more volatility, while a short one calls for a conservative portfolio.

Inflation and Long-Term Planning

Prices rise over time, so a balance that looks large today buys less later. A broader retirement calculator can model Social Security and spending, but start here with a simple inflation check: lower the return by about 2 to 3 points, then see whether the long-term number still funds the life you want. Good financial habits, such as raising your deposit whenever your pay rises, matter as much as the return you pick.

IRA Withdrawals, Penalties and Required Distributions

Taking money out early is expensive. A withdrawal before age 59½ normally triggers a 10% penalty on top of regular income tax unless you meet a listed exception. After that age, a Roth withdrawal is tax-free and a traditional one is taxed as income.

Required Minimum Distribution (RMD)

The RMD rules force traditional account owners to start taking annual distributions in their seventies, at age 73 or 75 depending on birth year. Roth accounts have no such requirement for the original owner. These withdrawals are what the retirement tax rate in the calculator is meant to represent.

What the Annual Schedule Shows

The annual schedule beneath the result lists the start and end balance for every year, split by account type. Use it to find the year your traditional balance overtakes your total contributions, or to confirm the pattern behind the figures in the worked example above.