Roth IRA: Tax-Free Growth, Rules, and Why It's a Favorite

Gen Z investors are putting 95% of their IRA contributions into Roth accounts [1]. Not 60%. Not 75%. Ninety-five percent.

An entire generation has decided that paying taxes now and never again is the obvious choice. They're probably right.

The Roth IRA holds $1.4 trillion in assets across the country [2], and that number is growing faster than any other IRA type. The reason isn't complicated: you pay taxes on the seed, not the harvest.

30-Second Summary: A Roth IRA is funded with after-tax dollars. Your money grows tax-free, and qualified withdrawals in retirement are completely tax-free. The 2026 limit is $7,500 ($8,600 if 50+). Income limits apply: singles phase out at $153,000–$168,000 MAGI. You can withdraw your contributions (not earnings) anytime without penalty.

How a Roth IRA Works

You contribute money you've already paid income tax on. Once inside the Roth IRA, that money invests and grows without any tax drag. No taxes on dividends. No taxes on capital gains. No taxes when you sell one fund and buy another inside the account.

When you're at least 59½ and your account has been open for at least five years, you withdraw everything (contributions and growth) completely tax-free.

Here's what that looks like in practice.

The Power of Tax-Free Compounding

Maya, age 25, contributes $7,500 every year to her Roth IRA and earns an average 7% annual return until age 65:

Maya puts in three hundred thousand dollars. She takes out nearly $1.5 million. Tax-free.

If this were a Traditional IRA and Maya withdrew at a 22% effective rate in retirement, she'd owe roughly $263,000 in taxes on the $1.197 million in growth. The Roth lets her keep every dollar of it.

That's the pitch. Now let's get into the rules.

2026 Contribution Limits

These limits are shared across all your IRAs. If you contribute $3,000 to a Traditional IRA, you can only put $4,500 into your Roth IRA that year [3].

You must have earned income to contribute, and your contribution can't exceed your earnings. Made $5,000 from a part-time job? That's your ceiling.

The contribution deadline is April 15 of the following year. You can fund your 2026 Roth IRA anytime from January 1, 2026 through April 15, 2027.

For the full picture on limits, catch-up rules, and deadlines, see our IRA contribution limits guide.

Income Limits

This is the Roth IRA's biggest limitation. The IRS restricts who can contribute directly based on Modified Adjusted Gross Income (MAGI).

2026 figures. Source: IRS Notice 2025-67 [4].

If you fall in the phase-out range, here's the math. Liam, a single filer with $160,000 MAGI in 2026:

1. Excess over threshold: $160,000 − $153,000 = $7,000
2. Phase-out range width: $168,000 − $153,000 = $15,000
3. Reduction ratio: $7,000 ÷ $15,000 = 46.67%
4. Reduction amount: $7,500 × 0.4667 = $3,500
5. Maximum contribution: $7,500 − $3,500 = $4,000

Liam can contribute $4,000 directly. For the remaining $3,500 of capacity, he'd need to use the backdoor Roth strategy.

For the full breakdown of phase-out math and strategies, see our Roth IRA income limits guide.

The Five-Year Rule

The five-year rule is simpler than most people think, but it still trips people up.

The clock starts on January 1 of the tax year you made your first-ever Roth IRA contribution. Not the day you contributed. Not the year you opened the account. The tax year.

If you opened a Roth IRA in March 2026 and designated the contribution for the 2026 tax year, your five-year clock started January 1, 2026. It ends December 31, 2030. After that, earnings withdrawals are qualified (assuming you're also 59½ or older).

Key points most articles bury:

• Contributions can be withdrawn anytime. No five-year rule. No penalties. No taxes. It's your money; you already paid taxes on it.
• The clock is per person, not per account. Open five Roth IRAs, and they all share the same start date from your first-ever contribution.
• Conversions have their own five-year clocks. Each Roth conversion starts a separate five-year period for penalty-free withdrawal of converted amounts. This matters if you're under 59½ and doing backdoor Roths [5].

Withdrawal Rules: The Ordering System

The IRS has a specific order for Roth IRA withdrawals:

1. Contributions come out first (always tax-free, always penalty-free)
2. Conversions come out second (tax-free, but 10% penalty if under 59½ and within five years of that conversion)
3. Earnings come out last (tax-free and penalty-free only if you're 59½+ and past the five-year mark)

This ordering makes Roth IRAs surprisingly flexible. If you've contributed $50,000 over the years, you can pull out up to fifty grand at any time, any age, for any reason. No taxes. No penalties.

Yes, there are edge cases. An inherited Roth has different rules. A conversion ladder for early retirees has its own timing requirements. Life is complicated and the tax code is worse. But for most people, the contribution withdrawal rule alone makes the Roth IRA the most flexible retirement account available.

The Backdoor Roth IRA

If your income exceeds the limits, you're not out of luck. The backdoor Roth is a two-step process:

1. Contribute to a Traditional IRA (non-deductible, since you're over the income limit)
2. Convert that Traditional IRA to a Roth IRA

This has been legal since 2010. There's no income limit on conversions, only on direct contributions.

The pro-rata rule warning: If you have existing pre-tax money in any Traditional, SEP, or SIMPLE IRA, the conversion becomes partially taxable. The IRS looks at all your Traditional IRA balances in aggregate. You can't cherry-pick just the after-tax dollars.

The clean workaround: roll any existing pre-tax IRA money into your employer's 401(k) before doing the backdoor Roth. This removes the pre-tax balance from the pro-rata calculation. If that sounds complex, our IRA rollover guide walks through the mechanics.

Special Exceptions for Early Withdrawals

Even if you're under 59½ and within the five-year period, certain exceptions let you withdraw earnings penalty-free (though you may still owe taxes on earnings):

• First-time home purchase: Up to $10,000 of earnings, lifetime limit
• Qualified education expenses
• Disability
• Birth or adoption: Up to $5,000

These exceptions waive the 10% penalty but not necessarily income tax on earnings. Contributions, as always, come out tax-free regardless.

No Required Minimum Distributions

Unlike Traditional IRAs, Roth IRAs never force you to withdraw money during your lifetime. No RMDs at 73. No RMDs at 85. Never.

This makes the Roth IRA an extraordinary estate planning vehicle. You can let it grow for decades and pass it to your heirs, who inherit the balance tax-free (though they must withdraw it within 10 years under current rules) [6].

Your Next Move

1. Open a Roth IRA if you don't have one. Fidelity, Vanguard, or Schwab. Ten minutes. Fund it with whatever you can.

2. Start the five-year clock immediately. Even a $1 contribution starts the clock. Don't wait until you have "enough" to invest.

3. Max it out if possible. $7,500 per year is $625 per month. Set up automatic transfers from your checking account.

4. If your income is too high: Use the backdoor Roth. Contribute to a Traditional IRA, convert immediately. Repeat every year.

5. If you also have a 401(k): Get the employer match first, then max the Roth IRA, then go back to the 401(k). That's the standard playbook.

Use our compound interest calculator to see what your specific contribution amount grows to over your timeline.

For more on how the Roth IRA fits into broader retirement planning, see our guide on FIRE strategies and withdrawal planning.

References

1. Fidelity Investments. (2025). Q3 2025 Retirement Analysis. Fidelity.com.
2. Investment Company Institute. (2024). The Role of IRAs in US Households' Saving for Retirement. ICI.org. https://www.ici.org/research/stats/retirement
3. Internal Revenue Service. (2025). 401(k) limit increases to $24,500 for 2026, IRA limit increases to $7,500. IRS.gov. https://www.irs.gov/newsroom/401k-limit-increases-to-24500-for-2026-ira-limit-increases-to-7500
4. Internal Revenue Service. (2025). Notice 2025-67: Cost-of-Living Adjustments for 2026. IRS.gov. https://www.irs.gov/pub/irs-drop/n-25-67.pdf
5. Schwab. (2026). Roth IRA Withdrawal Rules. Schwab.com. https://www.schwab.com/ira/roth-ira/withdrawal-rules
6. Bankrate. (2026). What is a Roth IRA? How they work, contribution limits and who can open one. Bankrate.com. https://www.bankrate.com/retirement/roth-ira/