What is a Roth IRA?
A Roth IRA is an individual retirement account that offers tax-free growth and tax-free withdrawals in retirement. Unlike a traditional IRA, you contribute after-tax dollars, but qualified withdrawals are completely tax-free.
| Category |
2024 Limit |
Notes |
| Contribution limit (under 50) | $7,000/year | Per person; not per account |
| Contribution limit (50 and older) | $8,000/year | $1,000 catch-up contribution |
| Phase-out begins: Single/HOH | $146,000 MAGI | Contribution begins reducing |
| Phase-out ends: Single/HOH | $161,000 MAGI | No direct Roth contribution allowed |
| Phase-out begins: Married filing jointly | $230,000 MAGI | — |
| Phase-out ends: Married filing jointly | $240,000 MAGI | — |
| Phase-out begins: Married filing separately | $0 | Immediately begins phasing out |
| Phase-out ends: Married filing separately | $10,000 MAGI | Effectively unavailable |
| Backdoor Roth IRA | No income limit | Contribute to traditional IRA, then convert; consult tax advisor re: pro-rata rule |
| Feature |
Roth IRA |
Traditional IRA |
Notes |
| Contribution tax treatment | After-tax (no deduction) | Pre-tax (may be deductible) | Deductibility depends on income + workplace plan |
| Growth | Tax-free | Tax-deferred | — |
| Withdrawals in retirement | Tax-free (qualified) | Taxed as ordinary income | — |
| Required Minimum Distributions | None | Start at age 73 | Major Roth advantage for legacy planning |
| Contribution income limit | Yes ($161K single / $240K MFJ, 2024) | No income limit | Traditional IRA has no contribution income limit |
| Deductibility income limit | N/A | Yes, if workplace plan exists | See IRS publication 590-A |
| Early withdrawal of contributions | Penalty-free | Penalty + taxes | Roth contributions (not earnings) can be withdrawn anytime |
| Early withdrawal of earnings | 10% penalty + taxes (before 59½) | 10% penalty + taxes | Both apply unless exceptions met |
| Best for | Expect higher taxes in retirement | Expect lower taxes in retirement | Key decision: now vs. later tax rate |
| Monthly Contribution |
Total Contributed by 65 |
Balance at 65 (7% return) |
Tax-Free Growth |
| $100/month | $48,000 | ~$262,000 | ~$214,000 |
| $200/month | $96,000 | ~$524,000 | ~$428,000 |
| $400/month | $192,000 | ~$1,047,000 | ~$855,000 |
| $583/month (max 2024) | ~$280,000 | ~$1,527,000 | ~$1,247,000 |
| $100/month (start age 35) | $36,000 | ~$122,000 | ~$86,000 — Starting 10 years later costs ~$140,000 in final balance |
| $400/month (start age 35) | $144,000 | ~$489,000 | ~$345,000 |
2024 Roth IRA Contribution Limits
- Under Age 50: $7,000 per year
- Age 50 and Over: $8,000 per year (includes $1,000 catch-up)
Income Limits for Roth IRA (2024)
Your ability to contribute to a Roth IRA depends on your modified adjusted gross income (MAGI):
- Single Filers: Full contribution if MAGI is under $146,000; phases out up to $161,000
- Married Filing Jointly: Full contribution if MAGI is under $230,000; phases out up to $240,000
Benefits of a Roth IRA
- Tax-Free Growth: Investments grow without being taxed
- Tax-Free Withdrawals: Qualified withdrawals in retirement are tax-free
- No RMDs: No required minimum distributions during your lifetime
- Flexible Withdrawals: Contributions (not earnings) can be withdrawn anytime
- Estate Planning: Tax-free inheritance for beneficiaries
Roth IRA vs Traditional IRA
| Feature |
Roth IRA |
Traditional IRA |
| Contributions |
After-tax |
Pre-tax (tax-deductible) |
| Withdrawals |
Tax-free |
Taxed as income |
| RMDs |
None |
Required at 73 |
When to Choose a Roth IRA
- You expect to be in a higher tax bracket in retirement
- You want tax-free income in retirement
- You want flexibility to withdraw contributions
- You want to leave tax-free money to heirs
Frequently Asked Questions
How accurate are the results?
The Roth IRA applies a standard formula to your inputs — accuracy depends on how precisely you measure those inputs. For planning and estimation, results are reliable. For high-stakes or professional decisions, cross-check the output with a domain expert or primary source.
Does this include Social Security income?
Most retirement calculators focus on portfolio-based savings. Social Security typically provides $1,500–$3,500/month for average earners — add this as an income offset when planning your required portfolio withdrawal rate.
What is a Roth IRA and how does it work?
A Roth IRA (Individual Retirement Account) is a retirement savings account that provides tax-free growth and tax-free withdrawals in retirement. How it works: contributions are made with after-tax money — there is no tax deduction in the year you contribute. Your investments grow tax-free inside the account (dividends, capital gains, and interest are not taxed annually). In retirement, qualified withdrawals are completely tax-free — neither contributions nor earnings are taxed when withdrawn after age 59½ and the account has been open for at least 5 years. Key rules: annual contribution limits: $7,000 (2024) or $8,000 if age 50 or older. Income limits: single filers above $161,000 MAGI cannot contribute directly; married filing jointly above $240,000 MAGI. Early withdrawals: contributions (not earnings) can be withdrawn at any time, penalty-free — because you already paid taxes on them. Earnings withdrawn before 59½ are subject to 10% penalty plus income taxes (with exceptions for first home purchase, disability, etc.). Required minimum distributions (RMDs): Roth IRAs have no required minimum distributions during the owner's lifetime — unlike traditional IRAs and 401(k)s, which require withdrawals starting at age 73. The Roth IRA is widely considered one of the most tax-advantaged retirement accounts available in the US for those who qualify. The tax-free compounding over decades — especially for younger investors — can produce substantially more after-tax wealth than equivalent pre-tax accounts at the same return.
Should I choose a Roth IRA or Traditional IRA?
The Roth vs. Traditional IRA decision comes down to one question: will your tax rate be higher now or in retirement? Choose Roth if: you expect to be in a higher tax bracket in retirement than you are today. You are young and early in your career (lower income now, higher income later). You want tax-free income in retirement (valuable if you have other taxable income sources). You want to avoid Required Minimum Distributions (Roth IRAs have none). You want flexibility to withdraw contributions penalty-free before retirement (emergency flexibility). You want to pass tax-free money to heirs. Choose Traditional if: you are currently in a high tax bracket and expect to be in a lower bracket in retirement. You can deduct the contribution now (reduces taxable income today). You need the current-year tax deduction for cash flow. The "hedging" strategy: many financial advisors recommend having both Roth and Traditional accounts to create "tax diversification" — the ability to manage your taxable income in retirement by choosing which account to withdraw from each year. This is particularly valuable because nobody knows what future tax rates will be. For younger workers (under 35–40): Roth generally wins. For high earners near peak income: Traditional often wins. For those uncertain: split contributions between both if possible. Income limits: if your income exceeds Roth direct contribution limits ($161K single / $240K MFJ in 2024), consider the backdoor Roth IRA strategy — contributing to a traditional IRA, then converting — but consult a tax advisor first regarding the pro-rata rule.
What happens if I contribute too much to a Roth IRA?
If you contribute more than the annual limit to a Roth IRA, the excess is subject to a 6% excise tax penalty for every year the excess remains in the account. How excess contributions happen: contributing more than the annual limit ($7,000 in 2024, $8,000 if 50+). Contributing when your income exceeds the phase-out limits ($161,000 MAGI for single, $240,000 for MFJ in 2024). Earning less income than you contributed (you can only contribute up to your taxable compensation). Example: if you contribute $7,000 but had only $4,000 in earned income, the excess is $3,000. How to fix it: fix before the tax filing deadline (including extensions, October 15): withdraw the excess contributions and any earnings attributable to the excess. No 6% penalty applies if corrected before the deadline. Fix after the tax deadline: withdraw the excess (penalty applies for the year it was over-contributed). Recharacterize: move the contribution to a traditional IRA if you had a valid traditional IRA contribution. Apply as a future year's contribution: if you have available contribution room in the next year and your situation qualifies. IRS Form 5329: must be filed if you owe the 6% excise tax. The 6% annual penalty continues until the excess is corrected — so address it promptly. Prevention: track your contributions across all IRA accounts (the $7,000 limit is the combined total across all traditional and Roth IRAs). Monitor your MAGI during the year for income changes that affect eligibility.
When can I withdraw money from a Roth IRA without penalty?
Roth IRA withdrawal rules are more flexible than traditional IRAs, with different rules for contributions vs. earnings. Contributions: can be withdrawn at any time, at any age, for any reason, with no taxes and no penalty. Since you already paid income tax on contributions, the IRS doesn't penalize retrieval. This is a unique advantage of Roth IRAs. Earnings: for tax-free and penalty-free withdrawal of earnings, two conditions must be met: age 59½ or older, AND the account must be at least 5 years old (the "5-year rule"). The 5-year clock starts on January 1 of the first year you make any Roth IRA contribution. Early withdrawal of earnings (before 59½): 10% penalty + ordinary income tax, unless an exception applies. Penalty exceptions (10% penalty waived, but taxes still apply): first-time home purchase (up to $10,000 lifetime). Qualified higher education expenses. Substantially equal periodic payments (SEPP/72(t)). Disability. Death (for beneficiaries). Health insurance premiums while unemployed. Medical expenses exceeding 7.5% of AGI. Practical summary: if you need emergency money, withdrawing Roth IRA contributions (not earnings) is penalty-free — making the Roth IRA a "double-duty" account that can serve as an emergency backup in addition to a retirement account. This flexibility is a strong argument for preferring Roth over traditional for emergency fund preservation. Important: avoid raiding retirement accounts when possible — the tax-free compounding lost to an early withdrawal is often worth more than the flexibility over a long time horizon.