

How a 401(k) works: 2026 contribution limits ($24,500), employer matching, Roth vs. traditional, and strategies to maximize savings.

Learn how a Roth IRA works: tax-free growth, 2026 contribution limits ($7,500), income limits, the five-year rule, backdoor Roth strategy, and withdrawal rules.

Founder of Arcanomy
Ph.D. engineer and MBA writing about wealth psychology, financial clarity, and why most money advice misses the point.
Subscribe for more insights, tips, and updates, straight to your inbox.
We respect your privacy and will never share your information.
You got a promotion in October. Your bonus hit in December. Your RSUs vested in March. And somewhere in there, your income crossed $168,000 for the year, which means you can't contribute to a Roth IRA at all. You find out when your accountant calls in April.
This scenario plays out thousands of times every year, especially for people in their late 20s and 30s whose incomes are rising faster than they expected. One good year can lock you out of the most popular retirement account in America.
But being locked out of direct contributions doesn't mean you're locked out entirely. Here's how the income limits work, how to calculate a partial contribution if you're in the phase-out zone, and the backdoor strategy that high earners use legally.
30-Second Summary: Roth IRA income limits for 2026 begin phasing out at $153,000 (single) and $242,000 (married filing jointly). Above $168,000 (single) or $252,000 (married), direct contributions are prohibited. If you're in the phase-out range, a formula determines your reduced limit. If you're above the cutoff, the "backdoor Roth" strategy bypasses the limit legally.
| Filing Status | Full Contribution Allowed | Phase-Out Range | No Direct Contribution |
|---|---|---|---|
| Single / Head of Household | Below $153,000 MAGI | $153,000–$168,000 | Above $168,000 |
| Married Filing Jointly | Below $242,000 MAGI | $242,000–$252,000 | Above $252,000 |
| Married Filing Separately | N/A | $0–$10,000 | Above $10,000 |
Source: IRS Notice 2025-67 [1].
That "Married Filing Separately" row is harsh. The phase-out starts at $0 and ends at $10,000, which effectively blocks Roth IRA contributions for virtually everyone using this filing status. It's one of the hidden costs of filing separately.
Modified Adjusted Gross Income is your Adjusted Gross Income (line 11 on Form 1040) with certain deductions added back in: student loan interest, foreign earned income exclusion, and a few others [2].
For most W-2 employees without foreign income, MAGI equals AGI. If you have straightforward income, you can use your AGI as a close approximation.
One question that comes up constantly: Do pre-tax 401(k) contributions lower my MAGI? Yes. Traditional 401(k) contributions reduce your AGI, which reduces your MAGI. Contributing $24,500 to a traditional 401(k) could push your MAGI below the Roth IRA threshold. It's worth checking the math.
If your income falls inside the phase-out range, the IRS doesn't cut you off completely. It reduces your maximum contribution using a specific formula.
The formula:
Profile: Reena, single, age 35, MAGI of $160,000 in 2026.
Reena can contribute $4,000 directly to her Roth IRA. She loses $3,500 of capacity due to income.
For the remaining $3,500, Reena could use the backdoor Roth strategy (below).
| Age | Standard Limit | With Catch-Up |
|---|---|---|
| Under 50 | $7,500 | N/A |
| 50 and older | $7,500 | $8,600 ($7,500 + $1,100) |
These limits are shared across all your IRAs (Traditional + Roth combined). They are NOT shared with 401(k) limits. You can max out both a Roth IRA and a 401(k) in the same year [3].
The "super catch-up" for ages 60–63 that applies to 401(k) plans does NOT apply to IRAs. The IRA catch-up stays at $1,100 regardless of your age [4].
For the full details on IRA limits, deadlines, and spousal IRA rules, see our IRA contribution limits guide.
If your income exceeds the limits, you can still get money into a Roth IRA through a two-step process:
Step 1: Contribute $7,500 to a Traditional IRA. Don't take a deduction (it's a non-deductible contribution).
Step 2: Convert the Traditional IRA to a Roth IRA. There's no income limit on conversions.
That's it. You now have $7,500 in a Roth IRA, growing tax-free.
The backdoor Roth works cleanly only if you have zero pre-tax money in any Traditional, SEP, or SIMPLE IRA. If you do have pre-tax IRA money, the IRS applies the pro-rata rule, making part of your conversion taxable.
For example, if you have $92,500 in pre-tax IRA money and convert $7,500 in after-tax money, 92.5% of the conversion ($6,937) is taxable. That defeats most of the purpose.
The solution: Roll any pre-tax IRA balances into your employer's 401(k) before doing the backdoor Roth. This clears the pro-rata calculation. Our IRA rollover guide walks through this in detail.
If your income ends up higher than expected (bonus, RSU vesting, spouse's income change), you may have contributed more than allowed. Excess contributions face a 6% penalty tax for every year they remain in the account [5].
You have two options:
Remove the excess (plus any earnings on it) before your tax filing deadline. The earnings are taxable and potentially penalized, but the 6% annual penalty stops.
Recharacterize the contribution as a Traditional IRA contribution instead. This effectively changes the contribution type retroactively. The deadline is your tax filing deadline, including extensions.
Don't ignore this. The 6% penalty compounds annually until you fix it. I've seen people discover three years of excess contributions during a routine tax review, with the accumulated penalties eating nearly 20% of the over-contributed amount.
| Your Income (Single) | Strategy | Details |
|---|---|---|
| Below $153,000 | Contribute directly | Full $7,500. Simple. |
| $153,000–$168,000 | Partial contribution + backdoor for the rest | Calculate your reduced limit, contribute that directly, backdoor the remainder |
| Above $168,000 | Full backdoor Roth | $7,500 non-deductible Traditional IRA → convert to Roth |
For married filing jointly, substitute $242,000 for the lower threshold and $252,000 for the upper.
Estimate your 2026 MAGI now. Use your most recent pay stub to project annual earnings. Include bonuses, RSUs, and investment income. If you're near a threshold, plan early.
If you're clearly under the limit: Contribute $7,500 to your Roth IRA as early in the year as possible. Front-loading beats waiting.
If you're in the phase-out zone: Run the formula above. Contribute your reduced amount directly, and consider a backdoor Roth for the remainder.
If you're over the limit: Do the backdoor Roth. Check for pre-tax IRA balances first. If you have them, roll them into your 401(k) before converting.
If your income is unpredictable: Wait until late in the year when you have a clearer picture. You have until April 15, 2027 to make your 2026 contribution.
For the broader picture on Roth IRA rules, withdrawal strategies, and the five-year rule, see our Roth IRA guide. Use our compound interest calculator to see how partial vs. full Roth IRA contributions affect your long-term retirement savings.
For broader tax planning around income limits, our guide on understanding tax brackets provides helpful context.