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Contributing to Both a 401(k) and an IRA in the Same Year

By Felix Thorpe · Retirement Accounts Writer

Yes, you can contribute to both a 401(k) and an IRA in the same year

The IRS allows you to fund both accounts simultaneously. There is no rule that forces you to choose one or the other. However, the two accounts have separate contribution limits, and if you have access to a workplace 401(k), your ability to deduct contributions to a traditional IRA may be reduced or eliminated depending on your income.

The key constraint is not whether you can contribute to both—you can—but how much you can put into each one and whether you get a tax deduction for the IRA portion. Understanding these limits and the income thresholds that affect deductibility will help you plan which account to prioritize.

Key Takeaways

  • You can contribute to a 401(k) and an IRA in the same calendar year without violating IRS rules.
  • A 401(k) contribution limit and an IRA contribution limit are separate, so you do not have to split one pool of money between them.
  • If you have a 401(k) at work, your ability to deduct traditional IRA contributions phases out above a certain income threshold, which varies by filing status.
  • Roth IRA contributions have no income limit, but Roth 401(k) contributions count toward the same limit as traditional 401(k) contributions.
  • Your employer's 401(k) match is separate from your own contributions and does not count toward your personal contribution limit.

How the contribution limits work when you use both accounts

Each account type has its own annual contribution ceiling. For 2024, you can contribute up to $23,500 to a 401(k) (or $30,500 if you are age 50 or older and make catch-up contributions). Separately, you can contribute up to $7,000 to an IRA—either traditional or Roth, or a combination of both—(or $8,000 if you are 50 or older).

These limits do not overlap. If you put $15,000 into your 401(k), you can still put $7,000 into an IRA. The two accounts are tracked independently by the IRS. Your employer reports 401(k) contributions on Form 5498-SA or through payroll records; you report IRA contributions yourself when you file your tax return, usually on Form 8606 if you are mixing deductible and non-deductible contributions.

The only time the limits interact is if you contribute to both a traditional IRA and a Roth IRA in the same year. In that case, your combined contributions to both IRAs cannot exceed $7,000 (or $8,000 if 50+). But a 401(k) sits outside that limit entirely.

When your 401(k) affects your IRA tax deduction

If you have access to a 401(k) at work, the IRS limits how much of a traditional IRA contribution you can deduct on your taxes. This is called the Modified Adjusted Gross Income (MAGI) phase-out. The phase-out range depends on your filing status and changes each year.

For 2024, if you are single and covered by a 401(k), your ability to deduct traditional IRA contributions begins to phase out at $77,000 MAGI and is completely eliminated at $87,000. If you are married filing jointly, the phase-out starts at $123,000 and ends at $143,000. If you are married filing separately, the range is $0 to $10,000—essentially, you cannot deduct traditional IRA contributions if you are covered by a 401(k) and file separately.

This does not mean you cannot contribute to a traditional IRA if your income is above the limit. You can still put money in. But the contribution will not be tax-deductible, and you will owe taxes on the earnings when you withdraw the money later—unless you convert it to a Roth IRA, which introduces other tax considerations.

Roth IRA contributions have no income limit if you use a 401(k)

Roth IRAs have no income phase-out based on 401(k) coverage. If your income is too high to deduct traditional IRA contributions, you can still fund a Roth IRA. The Roth IRA itself has income limits—for 2024, single filers begin to phase out at $146,000 and are completely phased out at $161,000—but these limits are independent of whether you have a 401(k).

Many people in this situation use a strategy called the backdoor Roth: they contribute to a traditional IRA (non-deductibly, since their income is too high), then immediately convert it to a Roth IRA. This sidesteps the Roth IRA income limit. The conversion itself is taxable in the year you do it, but the money grows tax-free in the Roth afterward.

If you pursue a backdoor Roth, be aware of the pro-rata rule. If you already have money in a traditional IRA from previous years, the IRS treats all your traditional IRAs as one pool for tax purposes. A portion of your conversion will be taxable based on the ratio of pre-tax money to after-tax money across all your traditional IRAs. This can make a backdoor Roth less attractive if you have substantial traditional IRA balances.

Employer match does not count toward your contribution limit

Your employer's 401(k) match is separate from your personal contribution limit. If your employer matches 3% of your salary, that match money does not reduce the $23,500 ceiling you can contribute yourself. The match is added on top of your contributions.

This means you can max out your 401(k) at $23,500, receive a full employer match, and still contribute $7,000 to an IRA in the same year. The match is reported separately on your Form 5498-SA and does not affect your IRA contribution room.

Strategic reasons to fund both accounts

Some people prioritize the 401(k) first because of the employer match—that is assistance programs, and you should capture it before funding an IRA. Others max the 401(k) because the contribution limit is much higher, allowing them to save more for retirement in a tax-advantaged way.

An IRA can still make sense alongside a maxed 401(k) if you want more investment flexibility. IRAs typically offer a wider range of investment choices than employer plans. If your 401(k) has high fees or limited fund options, an IRA might be a better place to put additional retirement savings. Additionally, if you are using a backdoor Roth strategy, the IRA is the vehicle you need, regardless of your 401(k) balance.

Some people also use an IRA as a bridge account for a rollover. If you leave a job, you can roll your old 401(k) into a traditional IRA, consolidating your retirement accounts and often gaining more control over investments and lower fees.

What happens at tax time when you contribute to both

When you file your tax return, you will report 401(k) contributions through your W-2 (they are withheld from your paycheck, so they are already accounted for). You report IRA contributions on Form 8606 if any portion is non-deductible, or simply note the deductible amount on your Form 1040 if the entire contribution is deductible.

If you contributed to a traditional IRA and your income is above the phase-out range, you will need to file Form 8606 to report the non-deductible portion. This form tracks your basis in the IRA so the IRS knows which part of future withdrawals is taxable. If you skip this step and the IRS later discovers the non-deductible contribution, you may face penalties and interest.

If you contributed to a Roth IRA, there is no deduction to claim, but you should keep records of your contributions. Roth contributions are always returned tax-free, so tracking them separately from earnings is important for withdrawal purposes later.

Frequently Asked Questions

If I max out my 401(k), can I still contribute the full amount to an IRA?

Yes. The $23,500 401(k) limit and the $7,000 IRA limit are separate. Maxing one does not reduce the other. However, if your income is above the phase-out range for traditional IRA deductions, your IRA contribution will not be tax-deductible—though you can still make the contribution and potentially convert it to a Roth.

Does my employer's 401(k) match count toward my contribution limit?

No. The match is added separately and does not reduce the $23,500 you can contribute yourself. You can receive a full match and still contribute the maximum from your own paycheck.

What is the backdoor Roth, and should I do it?

A backdoor Roth is a strategy where you contribute to a traditional IRA (non-deductibly) and then convert it to a Roth IRA to bypass Roth income limits. It works well if you have no other traditional IRA balances. If you do, the pro-rata rule makes part of the conversion taxable, which can eliminate the benefit.

Can I deduct my traditional IRA contribution if I have a 401(k)?

It depends on your income. For 2024, single filers can deduct the full amount if their MAGI is below $77,000; the deduction phases out between $77,000 and $87,000, and is zero above $87,000. Married filing jointly have a higher threshold ($123,000 to $143,000). Check the current year's limits on the IRS website, as they change annually.

What if I have a Roth 401(k) and want to contribute to an IRA?

A Roth 401(k) contribution counts toward the same $23,500 limit as a traditional 401(k) contribution. You can still contribute to an IRA separately. Roth 401(k) contributions do not affect your ability to fund a Roth IRA, though Roth IRA income limits still apply to direct Roth IRA contributions.