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Money moves you can—and can't—do at the same time

Key takeaways

  • You can contribute to multiple retirement accounts at the same time, including combinations of a 401(k), Roth 401(k), IRA, and Roth IRA, provided you meet certain criteria and stay within contribution limits.
  • You can't contribute to a health savings account (HSA) and a flexible spending account (FSA) in the same year (unless it's a limited purpose FSA), but you can have more than 1 health insurance plan.
  • The ability to collect unemployment benefits and severance at the same time depends on your state.
  • You can't double-dip on education tax incentives, such as claiming certain tax credits and withdrawing from a 529 tax-free.

You probably know that having a retirement account is a good idea. Is having 2 even better? Short answer: It depends. But not all account combos are above board, and some money moves that sound great together can actually be off limits.

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Here, answers to FAQs about which accounts you could contribute to at the same time—and when you have to choose.

1. Can I contribute to a traditional and Roth 401(k) at the same time?

Yes, if your employer offers Roth 401(k)s. (Of retirement plans that Fidelity administers, nearly 80% do.1) Just know that your contributions are limited across plans. In 2024 someone under 50 can contribute a maximum of $23,000 to both, not each. Similarly, those who are age 50 or older can split their catch-up contributions ($8,000 in 2024) between traditional and Roth 401(k)s.

Why might you want to split contributions between the 2? Maybe you like how traditional 401(k) contributions lower taxable income now and how Roth 401(k) withdrawals are tax-free later.

"Strategically contributing to both accounts could be beneficial for those who want to manage their tax brackets," says Beau Zhao, CFA®, a director of Financial Solutions at Fidelity. If you don't know whether you'll be in a higher or lower tax bracket in the future, this could be a way to hedge your bets. Read about the Roth 401(k), which is most popular among 20- to 34-year-old Fidelity accountholders. Perhaps it's because young workers think they'll be in a higher tax bracket later and prefer to pay taxes now while they're in a lower tax bracket.

2. Can I contribute to a 401(k) and an individual retirement account (IRA) in the same year?

Yes, and according to Fidelity data, about 32% of its individual retirement accountholders also have an employer-sponsored defined contribution account, such as a 401(k).2 You can contribute up to $23,000 (plus an extra $7,500 for those age 50+) to a 401(k) and up to $7,000 (plus an extra $1,000 for those age 50+) across all of your IRAs for tax year 2024. Your income and whether you or your spouse has access to a workplace retirement plan determine whether and by how much your traditional IRA contributions are tax-deductible. (Roth IRA contributions aren't.) Income restrictions also apply to Roth IRA contributions.

Learn more about different types of retirement accounts.

3. Can I have 401(k)s from 2 different employers in the same year?

Yes. Maybe you switched full-time employers, or perhaps your side hustle offers a retirement plan, and maybe you prefer 1 plan's fund options but the other's employer match. Whatever reason you're contributing to 2 plans, just don't contribute more than the annual contribution limit across both plans.

In general, employers will stop paycheck contributions once you hit the maximum, but if you have multiple employers, they won't know your contributions outside of their own plan. If you exceed the limit, tell your employer. If you don't get back the excess before Tax Day the following year, you'll be subject to additional tax plus a 10% early withdrawal penalty.

You can also have a workplace 401(k) and, if you're eligible, a self-employed 401(k) at the same time. Employee contribution limits apply across both plans, but employers can contribute up to 25% of your compensation. Total employee plus employer contributions cannot exceed $69,000 for 2024 ($76,500 if you're age 50 or older and contributing the catch-up contribution amount).

4. Can I have a traditional IRA and a Roth IRA at the same time?

Yes. In fact, having both is central to a backdoor Roth, a strategy of converting nondeductible contributions in a traditional IRA to a Roth IRA. Contribution limits still apply across both accounts. If you convert traditional IRA funds to a Roth IRA, you must pay taxes on the converted amount. And to do so, you must proportionally split between your after-tax and pre-tax balances across all your IRAs (except inherited IRAs), including contributions and earnings. For example, if 90% of your total traditional IRA assets are pre-tax and 10% are after-tax, you would need to pay taxes on 90% of the converted amount. Learn more about this pro rata rule.

5. Can I contribute to a health savings account (HSA) and health care flexible spending account (FSA) in the same year?

No, in most cases. An exception: if you have an HSA and what's called a limited purpose flexible spending account (LPFSA). An LPFSA is an employer-sponsored pre-tax account that you can use to pay for qualified dental and vision expenses for employees enrolled in an HSA-eligible health plan. Married? The IRS considers you and your spouse as a single tax unit, so if your spouse is enrolled in an employer-sponsored health care FSA then you cannot contribute to your HSA. Learn the difference between HSAs and FSAs.

6. Can I have 2 health insurance plans at the same time?

Yes. A process called coordination of benefits determines which insurance plan will pay first. Your primary plan will pay for the health claim first, paying the costs up to the plan's coverage limits, and then your second plan will kick in. Having 2 plans doesn't mean that you won't have any out-of-pocket costs. It just means that you may end up paying lower out-of-pocket costs, but keep in mind you may also be paying 2 premiums and 2 deductibles plus dealing with twice the paperwork.

Why would someone have more than one plan? Common examples include someone under 26 with their own plan through an employer and who remains on a parent's plan, or a person on both their employer's plan and a spouse's employer's plan.

7. Can I collect severance pay and unemployment benefits at the same time?

It depends on the state. Some prohibit it. Some allow it but take the amount of your severance into consideration in calculating reduced unemployment benefits. Some allow double-dipping because they don't treat severance pay as income. Rules on collecting severance pay and unemployment are all over the map, so check with your state's unemployment office for guidance.

8. Can I claim the standard deduction and itemize deductions on my tax return?

No. You must pick either taking the standard deduction, which reduces your taxable income by an amount set by the government each year, or itemized deductions, which taxpayers might choose if their deductions add up to an amount greater than the standard deduction, reducing their taxable income even more. The IRS lists types of taxpayers who can't use the standard deduction, such as those who are married filing separately with a spouse who itemizes. Still, you're generally able to claim credits on top of the standard deduction.

9. Can I claim the American Opportunity Tax Credit (AOTC) or Lifetime Learning Credit (LLC) and withdraw from a 529 account tax- and penalty-free in the same year?

Not if you are using the same qualified higher education expenses for both the tax-free 529 withdrawal and the tax credit.

For example, the AOTC is 100% of the first $2,000 of qualified education expenses and 25% of the next $2,000 for a maximum credit of $2,500 on $4,000 worth of expenses. Let's say you have a total of $10,000 in qualified expenses. You can withdraw only $6,000 from a 529 tax-free ($10,000 minus the $4,000 that you already counted to claim the AOTC) and cover the rest with non-529 funds.

If you took out $10,000 from the 529, the $4,000 that qualified you for the AOTC would be considered nonqualified expenses, possibly subjecting you to federal and state income tax and a 10% early withdrawal penalty if you already claimed the AOTC.

By the way, you can only claim either the AOTC or the LLC (not both) for the same student in the same year, contingent on eligibility.

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1. Fidelity data as of September 30, 2023.

Investing involves risk, including risk of loss.

2. Fidelity business analysis of workplace retirement plans and IRA accounts as of December 31, 2023.

This information is intended to be educational and is not tailored to the investment needs of any specific investor.

Fidelity does not provide legal or tax advice. The information herein is general and educational in nature and should not be considered legal or tax advice. Tax laws and regulations are complex and subject to change, which can materially impact investment results. Fidelity cannot guarantee that the information herein is accurate, complete, or timely. Fidelity makes no warranties with regard to such information or results obtained by its use, and disclaims any liability arising out of your use of, or any tax position taken in reliance on, such information. Consult an attorney or tax professional regarding your specific situation.

The information provided herein is general in nature. It is not intended, nor should it be construed, as legal or tax advice. Because the administration of an HSA is a taxpayer responsibility, you are strongly encouraged to consult your tax advisor before opening an HSA. You are also encouraged to review information available from the Internal Revenue Service (IRS) for taxpayers, which can be found on the IRS website at You can find IRS Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans, and IRS Publication 502, Medical and Dental Expenses, online, or you can call the IRS to request a copy of each at 800-829-3676.

Please carefully consider the plan's investment objectives, risks, charges, and expenses before investing. For this and other information on any 529 college savings plan managed by Fidelity, contact Fidelity for a free Fact Kit, or view one online. Read it carefully before you invest or send money.

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