Traditional IRA Growth Calculator

What Is a Traditional IRA?

An Individual Retirement Account (IRA) is a tax-advantaged savings account designed for retirement. A Traditional IRA provides a potential tax deduction on contributions today, grows tax-deferred (no capital gains or dividend taxes while invested), and withdrawals in retirement are taxed as ordinary income.

2024 Contribution Limits

• Under age 50: $7,000 per year
• Age 50 and older: $8,000 per year (the extra $1,000 is a “catch-up” contribution)
• Income limits for deductibility: If you or your spouse have a workplace retirement plan, deductibility phases out at certain income thresholds. Without a workplace plan, anyone can deduct the full contribution regardless of income.

Traditional IRA vs Roth IRA

The core difference is when you pay taxes:

Traditional IRA:

• Contribute pre-tax dollars (deductible) → lower taxable income today
• Investments grow tax-deferred
• Withdrawals in retirement are taxed as ordinary income
• Required Minimum Distributions (RMDs) begin at age 73

Roth IRA:

• Contribute after-tax dollars (no deduction) → no immediate tax benefit
• Investments grow completely tax-free
• Qualified withdrawals in retirement are 100% tax-free
• No RMDs during the account holder’s lifetime

Which Is Better — Traditional or Roth?

The answer depends on your current vs expected retirement tax rate:

• If you expect to be in a lower tax bracket in retirement → Traditional IRA wins (you defer taxes to a lower rate)
• If you expect to be in a higher or equal bracket in retirement → Roth IRA wins (pay taxes now at a lower rate)
• If tax rates are equal → Roth is often preferred (tax-free growth + no RMDs)

Required Minimum Distributions (RMDs)

Starting at age 73, the IRS requires you to withdraw a minimum amount from Traditional IRAs each year. The withdrawal amount is calculated using your account balance and a life expectancy factor from IRS tables. Failure to take the RMD results in a 25% penalty on the amount not withdrawn.

The Backdoor Roth

High earners who exceed the Roth IRA income limits can contribute to a Traditional IRA (non-deductible) and then convert it to a Roth — this is the “Backdoor Roth” strategy. Consult a tax advisor before implementing.

Growth Formula

Traditional IRA: FV = current_balance × (1+r)^n + annual_contribution × [(1+r)^n - 1] / r. After-tax value at retirement = FV × (1 - retirement_tax_rate). The tax deduction saves: contribution × current_tax_rate per year.