Roth vs Traditional IRA: What's the Difference?
The short answer: a Traditional IRA gives you a potential tax deduction today and taxes your withdrawals in retirement. A Roth IRA offers no upfront deduction but lets qualified withdrawals in retirement be completely tax-free. The better choice depends on whether your tax rate is higher now or in retirement.
| Dimension | Traditional IRA | Roth IRA |
|---|---|---|
| Contribution tax treatment | May be pre-tax (deductible) | After-tax (never deductible) |
| Growth | Tax-deferred | Tax-free |
| Withdrawals in retirement | Taxed as ordinary income | Tax-free (if rules met) |
| Required Minimum Distributions | Required starting at age 73 | None during owner's lifetime |
| Best if your tax rate is… | Higher now than in retirement | Lower now than in retirement |
What Is a Traditional IRA?
A Traditional IRA (Individual Retirement Account) allows you to contribute pre-tax dollars (subject to income and workplace plan limits), reducing your taxable income in the year of the contribution. The money grows tax-deferred, meaning you pay no taxes on gains until you withdraw the funds in retirement, at which point withdrawals are taxed as ordinary income. Early withdrawals before age 59½ typically incur a 10% penalty plus income tax.
Traditional IRAs are advantageous if you expect to be in a lower tax bracket in retirement than you are today. The deduction reduces your current tax bill, and you pay taxes later when your rate may be lower. Use the Roth vs Traditional Calculator to see which option produces a larger after-tax nest egg based on your specific assumptions.
What Is a Roth IRA?
A Roth IRA is funded with after-tax contributions, so you receive no tax deduction today. However, the money grows completely tax-free, and qualified distributions in retirement (age 59½ or older, account open at least 5 years) are tax-free — including all the gains. There are no Required Minimum Distributions (RMDs) during your lifetime, giving you more flexibility in retirement planning and estate planning.
Roth IRAs are subject to income limits for direct contributions (in 2024: phase-out begins at $146,000 for single filers, $230,000 for married filing jointly). Higher earners may use a "backdoor Roth" conversion. The Roth IRA Growth Calculator shows how your contributions can compound tax-free over decades.
Key Differences
The central question is: when do you want to pay taxes? The Traditional IRA defers taxes; the Roth IRA prepays them. If you believe your tax rate in retirement will be lower than it is today, the Traditional IRA wins mathematically. If your tax rate will be the same or higher in retirement — common for young earners early in their career — the Roth IRA usually wins.
- Flexibility: Roth IRA contributions (not earnings) can be withdrawn anytime without penalty, making it a more flexible emergency backstop.
- RMDs: Traditional IRAs force withdrawals starting at 73, which can push you into a higher bracket. Roth IRAs have no such requirement.
- Estate planning: Roth IRAs pass to heirs income-tax-free, making them a powerful legacy tool.
- Both have the same annual contribution limit: $7,000 in 2024 ($8,000 if age 50 or older), shared across all your IRAs.
Which Should You Use?
A useful heuristic: if you are early in your career or in a low tax bracket, lean toward the Roth. If you are in your peak earning years and expect a lower income in retirement, the Traditional IRA deduction is more valuable now. Many financial advisors recommend contributing to both over time to diversify your tax exposure — a strategy called "tax diversification." Run the numbers with the Roth vs Traditional Calculator, and also see the 401(k) Retirement Savings Calculator to model how these accounts fit into your broader retirement picture.
FAQ
Can I have both a Roth and a Traditional IRA?
Yes, you can contribute to both in the same year, but your total contributions across all IRAs cannot exceed the annual limit ($7,000 in 2024; $8,000 if 50+).
What is a backdoor Roth IRA?
High earners above the Roth income limits can make a non-deductible Traditional IRA contribution and then convert it to a Roth IRA. This effectively sidesteps the income limit. Tax treatment depends on whether you have pre-tax IRA funds elsewhere (the "pro-rata rule"), so consult a tax professional.
When does the 5-year rule apply to Roth IRAs?
Earnings in a Roth IRA are tax- and penalty-free only if the account has been open for at least 5 years AND you are 59½ or older (or meet another qualifying exception). Contributions can always be withdrawn penalty-free at any time.