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IRS/Retirement Actuary Engine

IRA Calculator

Optimize your tax shielding. Compare Traditional and Roth IRA strategies to determine which path maximizes your post-retirement wealth.

Retirement Profile

Tax Arbitrage Assumptions

Pro Tip: The **Roth IRA** is usually superior if you expect to be in a higher tax bracket at retirement. **Traditional** is better if you need the tax deduction now.

IRS/Retirement Actuary Analytics

Optimizing Your
Retirement Tax Shield

An IRA (Individual Retirement Account) is more than just a savings account; it is a legally protected tax shelter designed to encourage long-term wealth building. However, the choice between a Traditional IRA and a Roth IRA is one of the most consequential decisions in financial planning. It's essentially a bet on your future tax rate. Our calculator helps you visualize these scenarios, comparing "Tax-Now" (Roth) versus "Tax-Later" (Traditional) outcomes.

Roth Advantage

Contributions are made with after-tax dollars, but **every penny** of growth and withdrawal is 100% tax-free. Ideal for those expecting higher future tax rates.

Traditional Deduct

Contributions are often tax-deductible now, lowering your current taxable income. However, the entire balance is taxed as ordinary income upon withdrawal.

Compounding

Inside an IRA, you pay no capital gains or dividend taxes. This allows your investments to grow significantly faster than in a standard brokerage account.

Roth vs. Traditional: The Tax Arbitrage

The decision boils down to a simple mathematical comparison: Is your tax rate higher now, or will it be higher in retirement?

  • Choose Roth if: You are young, in a low tax bracket now, or believe tax rates will rise significantly by the time you retire.
  • Choose Traditional if: You are in your peak earning years (high tax bracket) and expect to have a lower income/tax rate in retirement.

2024 Contribution Limits

For 2024, the IRS allows a maximum contribution of $7,000 to your IRAs (total across all accounts). If you are age 50 or older, you are eligible for a "Catch-Up" Contribution of an additional $1,000, bringing the total to $8,000.

The MAGI Limitation

Not everyone can deduct Traditional IRA contributions, and not everyone can contribute directly to a Roth IRA.

  • Roth Phase-Out: For 2024, if you are a single filer with a Modified Adjusted Gross Income (MAGI) over $161,000, you cannot contribute directly to a Roth IRA.
  • Traditional Deduction Phase-Out: If you or your spouse are covered by a retirement plan at work (like a 401k), your ability to deduct Traditional IRA contributions is phased out at certain income levels.

IRA Strategic Rules:

  • • The 59.5 Rule: Withdrawals before age 59.5 usually incur a 10% penalty plus ordinary income tax (though Roth *contributions* can always be withdrawn penalty-free).
  • • RMDs: Traditional IRAs require you to start taking distributions (RMDs) starting at age 73. Roth IRAs have no RMDs during your lifetime.
  • • Backdoor Roth: High earners often use a "Backdoor Roth" strategy: contribute to a non-deductible Traditional IRA and immediately convert it to a Roth.

Inherited IRAs

Under the SECURE Act, most non-spouse beneficiaries must withdraw the entire balance of an inherited IRA within **10 years**. This makes the tax-free status of a Roth IRA even more valuable for estate planning.

How to Use This Tool

Input your "Current Age" and "Retirement Age." Enter your "Starting Balance" and "Annual Contribution" (staying within the $7,000 limit if possible). Set your "Expected Return" (historical S&P 500 is ~7-10%). Be realistic with your "Current Tax Rate" versus your "Retirement Tax Rate." The calculator will show the Net Value of both options and identify the Superior Strategy for your specific numbers.