What This Calculator Does
A traditional IRA (Individual Retirement Account) lets you invest pre-tax or after-tax dollars for retirement, with growth that is tax-deferred until you withdraw. This calculator projects your IRA balance at retirement and shows how your contributions compound over time.
It also estimates the tax savings you receive today from deductible contributions and the after-tax value of your balance at retirement, giving you a complete picture of the traditional IRA's financial benefit. For comparing with a Roth IRA, see our Roth IRA Calculator.
2026 IRA Contribution Limits
The IRS set the 2026 traditional IRA contribution limit at $7,500 for those under age 50. If you are 50 or older, you can contribute $8,600, which includes a $1,100 catch-up contribution. Under SECURE 2.0, if you turn 60, 61, 62, or 63 during the tax year, you qualify for an enhanced "super catch-up" contribution. For 2026, this higher limit is expected to be approximately $11,250 (the greater of $10,000 or 150% of the regular catch-up amount, inflation-adjusted). These limits apply across all traditional and Roth IRAs combined.
Inputs Required
- Current Age and Retirement Age: Defines the accumulation period
- Current IRA Balance: Any existing balance in the account
- Annual Contribution: How much you add each year (2026 limit: $7,500; $8,600 if age 50+; up to ~$11,250 if age 60-63 under SECURE 2.0)
- Expected Annual Return: Your projected average investment return
- Current Tax Rate: Your marginal rate today, used to calculate the upfront tax deduction value
- Retirement Tax Rate: Your expected rate in retirement, used to show the after-tax balance
Outputs Provided
- Pre-Tax Balance at Retirement: Total projected value before withdrawal taxes
- After-Tax Value: What you actually keep after paying income tax on withdrawals
- Annual Tax Savings Today: The immediate tax benefit of deductible contributions
- Growth Chart: Year by year view of contributions vs. total balance
How the Calculation Works
The IRA balance compounds monthly using the standard future value formula. Contributions are added each month on top of growth:
FV = PV x (1 + r)^n + C x [((1 + r)^n - 1) / r]
- FV is the future balance at retirement
- PV is the current balance
- r is the monthly rate (annual rate divided by 12)
- n is total months until retirement
- C is the monthly contribution
The after-tax value is the projected balance multiplied by (1 minus the retirement tax rate), since all traditional IRA withdrawals are taxed as ordinary income. The annual tax saving equals the contribution multiplied by your current marginal rate. For a broader retirement picture that includes Social Security and other savings, use our Retirement Calculator.
How to Use the Calculator
- Enter your current age and the age you plan to retire
- Input your current IRA balance, or 0 if starting fresh
- Set your planned annual contribution amount (up to $7,500 for 2026, or $8,600 if age 50+)
- Enter your expected investment return rate. The S&P 500 has averaged about 10.4% annually, but 6% to 7% is more conservative for planning
- Set your current and expected retirement tax rates
- Review your projected balance and after-tax value
Example Calculations
Example 1: Mid-Career Saver
Age 35, $20,000 current balance, contributing $7,500 per year (the 2026 limit), 7% return, retiring at 65, 24% current tax rate, 22% retirement tax rate:
- Projected pre-tax balance at 65: approximately $840,000
- After-tax value (22% rate): approximately $655,000
- Annual tax savings from deduction: $1,800 per year today
The $1,800 saved in taxes each year effectively reduces the net cost of the $7,500 contribution to $5,700, making the IRA a highly efficient savings vehicle even before accounting for decades of tax-deferred growth.
Example 2: Catch-Up Saver at Age 55
Linda, a 55-year-old marketing director in Boston, has $85,000 in her traditional IRA. She maxes out her catch-up contribution at $8,600 per year and plans to retire at 67. With a 6.5% return, 24% current tax rate, and 20% expected retirement tax rate:
- Projected pre-tax balance at 67: approximately $295,000
- After-tax value (20% rate): approximately $236,000
- Annual tax savings from deduction: $2,064 per year today
If Linda turns 60 during her savings period and qualifies for the SECURE 2.0 super catch-up, she could increase her contribution to approximately $11,250 per year for those years, potentially adding another $40,000+ to her balance by retirement. For employer-sponsored plan modeling, see our 401(k) Calculator.
Real World Scenarios
Freelancer Without a Workplace Plan
Carlos, a 40-year-old freelance web developer in Miami, earns $75,000 per year and has no employer-sponsored retirement plan. Because he is not covered by a workplace plan, his traditional IRA contributions are fully deductible regardless of income. He contributes the full $7,500 per year and saves $1,800 annually on his tax bill (at 24% marginal rate). Over 25 years at 7%, his IRA grows to approximately $560,000 pre-tax. Without the IRA, he would have invested in a taxable brokerage account, paying taxes on dividends and capital gains each year, which would have reduced his final balance by an estimated 15% to 20%.
Spousal IRA for a Non-Working Spouse
Jennifer stays home to raise their two children while her husband Mark earns $130,000 as a software engineer. Mark maxes out his 401(k) at $24,500 for 2026. Jennifer contributes $7,500 to a spousal traditional IRA in her name, based on Mark's earned income. Because Mark is covered by a workplace plan and their combined MAGI exceeds the 2026 phaseout range for MFJ ($129,000 to $149,000), Jennifer's contribution may not be fully deductible. They use this calculator to compare the after-tax value of a deductible vs. non-deductible traditional IRA contribution and decide whether a Roth IRA might be better for Jennifer. See our Roth IRA Calculator for that comparison.
Supplementing a 401(k) Near Retirement
Robert, 58, has maxed out his 401(k) for years and has $420,000 in that account. He still has $7,500 of additional savings capacity each year and wants to know if a traditional IRA makes sense. Since he is covered by a workplace plan and earns $110,000, his 2026 deduction phases out between $81,000 and $91,000 MAGI for single filers. At $110,000, he is above the phaseout range and cannot deduct his contribution. He decides to contribute to a Roth IRA instead, where withdrawals will be tax-free in retirement. For calculating required withdrawals later, our RMD Calculator handles the math.
Common Mistakes to Avoid
- Missing the contribution deadline: IRA contributions for a tax year can be made up until the tax filing deadline (typically April 15 of the following year). But contributing earlier in the year gives your money more time to compound. Contributing on January 1 instead of April 15 of the following year gives you up to 15 extra months of tax-deferred growth
- Assuming full deductibility: If you or your spouse have a workplace retirement plan, deductibility phases out at certain income levels. For 2026, the phaseout for single filers with a workplace plan is $81,000 to $91,000 MAGI, and $129,000 to $149,000 for married filing jointly. Verify your eligibility each year using IRS Publication 590-A
- Not investing contributions: Simply depositing money into an IRA without selecting investments leaves it in cash earning minimal returns. According to a 2025 Vanguard study, a significant percentage of IRA holders leave contributions uninvested, missing out on years of compound growth
- Ignoring RMDs: Traditional IRAs require minimum distributions starting at age 73 under SECURE 2.0. The penalty for missing an RMD is 25% of the amount not withdrawn (reduced to 10% if corrected timely). Use our RMD Calculator to calculate your required distribution
- Overlooking the super catch-up: If you turn 60, 61, 62, or 63 during the year, SECURE 2.0 allows a significantly higher catch-up contribution (approximately $11,250 for 2026). Many savers are unaware of this provision and miss out on thousands in additional tax-advantaged savings
Limitations of This Calculator
This calculator assumes a constant annual return rate and fixed annual contributions. It does not model variable returns, which significantly affect real-world outcomes due to sequence-of-returns risk. It does not account for IRS contribution limits automatically, so ensure your entered contribution does not exceed $7,500 ($8,600 if 50+, approximately $11,250 if 60-63). It does not handle non-deductible contributions or track basis, which affects taxation of withdrawals. It does not model Roth conversions, backdoor IRA strategies, or early withdrawal penalties. For comprehensive retirement planning that includes Social Security, pensions, and taxable accounts, use our Retirement Calculator. For general investment growth modeling, use our Investment Calculator.
Authoritative Research & Resources
- IRS - 2026 Retirement Plan Contribution Limits (Notice 2025-67) - The official IRS announcement of 2026 contribution limits for IRAs, 401(k)s, and other retirement plans. This is the primary source for the $7,500 IRA limit, $8,600 catch-up limit, and SECURE 2.0 super catch-up provisions.
- IRS - Catch-Up Contributions - The IRS page detailing catch-up contribution rules for workers age 50 and older, including the SECURE 2.0 enhanced catch-up for ages 60-63. Use this to verify your eligibility for higher contribution limits.
- Charles Schwab - Catch-Up Contributions 2025 and 2026 Guide - Schwab's educational guide explaining catch-up contribution rules, the SECURE 2.0 super catch-up for ages 60-63, and the Roth catch-up requirement for high earners. Useful for understanding how these rules apply to your specific situation.