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Avoid These 7 Costly 401(k) Rollover Mistakes When Changing Jobs

Jatniel Brito
5 minute read

Learn the key 401(k) rollover rules and common errors to avoid when changing jobs, including tax implications, deadlines, and account transfer options.

Changing jobs can be exciting. A new office, new projects, and maybe even a raise. But if you have a 401(k) from a previous job, you also need to make some smart decisions about your retirement savings. Ignoring the rules around 401(k) rollovers can potentially cost you thousands in taxes, penalties, or missed growth opportunities.

7 Costly Rollover Mistakes To Avoid

Mistake #1: Cashing Out Too Soon

It might be tempting to withdraw your old 401(k) and put it in your checking account, especially if you’re juggling bills or planning a big purchase. But taking money out early usually means:

  • Income taxes: Your withdrawal counts as taxable income.
  • Early withdrawal penalty: If you’re under 59½, the IRS hits you with an additional 10% penalty.

Withdrawing money not only costs you in taxes and penalties, but it also prevents your savings from growing and compounding over time.

Instead, consider keeping your savings invested. Rolling it over into your new employer’s 401(k) or an IRA keeps your retirement money working for you and avoids unnecessary taxes and penalties.

Mistake #2: Missing the 60-Day Rollover Window

If you receive a check from your old 401(k) and want to deposit it into a new retirement account, you have 60 days to complete the rollover.

Failing to do this means the IRS treats it as a withdrawal, which could cost you both taxes and penalties.

Pro tip: Many people skip the hassle by asking their old plan to do a direct rollover into a new 401(k) or IRA. That way, the money never touches your hands, and you don’t have to worry about the 60-day clock. PensionBee can help guide you through this process to make sure your rollover is smooth and straightforward.

Mistake #3: Not Checking Your Vesting Schedule

Before you roll over your old 401(k), take a close look at your vesting schedule. It determines how much of your employer’s contributions you actually get to keep if you leave your job.

Here’s how it works:

  • Your contributions are always 100% yours.
  • Employer contributions (the match) may only become fully yours after you’ve worked a certain number of years.

For example, if your plan has a five-year vesting schedule and you leave after three years, you might only keep a portion of your employer’s match, while the rest stays with the company.

Knowing your vesting schedule before you leave can help you decide whether it’s worth staying a bit longer or rolling over your balance right away. It also helps ensure you know exactly how much money will move with you into your next 401(k) or IRA.

Mistake #4: Not Considering Investment Options

Every 401(k) plan comes with its own set of investment choices. Some give you plenty of affordable options, while others can be more limited or cost more to manage.

When rolling over your 401(k), take a look at your new options:

  • Are the funds diversified?
  • What are the fees?
  • Does the plan offer target-date funds or other hands-off options?

If an IRA offers better investment options or lower fees than your employer’s 401(k), it may make sense to roll your old 401(k)s from previous jobs into an IRA rather than your new employer’s plan.

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Mistake #5: Forgetting About Taxes on Traditional vs. Roth Rollovers

If your old 401(k) is made up of pre-tax contributions and you want to roll it into a Roth IRA, you’ll need to pay taxes on the amount you convert. A rollover into a Roth IRA can make sense if you want tax-free withdrawals in retirement, but be sure to understand the immediate tax impact and plan ahead.

This isn’t necessarily a bad thing, but many people don’t prepare for the tax bill and end up with an unpleasant surprise at tax time.

Mistake #6: Losing Track of Old 401(k)s

If you’ve changed jobs multiple times, it’s easy for retirement accounts to get scattered. Multiple 401(k)s might mean multiple fees, different investment options, and a harder time seeing the full picture of your retirement savings.

You can roll your old 401(k)s into your new employer’s plan or move them into an IRA for even more control and flexibility. Consolidation can help you:

  • Monitor your investments more easily
  • Avoid unnecessary fees
  • Track progress toward your retirement goals

It’s much easier to manage one account than three or four and PensionBee can help make the consolidation process simple and stress-free.

Mistake #7: Overlooking Contribution Limits

It’s easy to get caught up in moving your old 401(k) money and forget one important detail: contribution limits. In 2025, you can contribute up to $23,500 to a 401(k) if you’re under 50, or $31,000 if you’re 50 or older (including catch-up contributions).

Exceeding these limits can create unexpected penalties or require corrections later. When planning your rollover, it’s important to be aware of these limits so your contributions stay within the allowed range.

Streamline Your Retirement When Switching Jobs

Changing jobs is a fresh start and your retirement plan deserves the same kind of careful attention. By knowing what to watch out for, you can make the rollover process much smoother. PensionBee can help make it simple to rollover old 401(k)s and IRAs into one account, giving you a clear view of your savings. Many rollovers happen automatically, but if yours requires extra attention, our personal rollover managers, called BeeKeepers, are ready to guide you every step of the way. With diversified portfolios powered by ETFs like SPY and MDY from State Street Investment Management, one of the world’s largest asset managers.

Your investment can go down as well as up. This post, and any associated customer testimonial or third party endorsement, is provided solely for informational and educational purposes, should not be taken as tax, legal, financial or investment advice and is not an offer, solicitation, or recommendation to buy or sell any securities or investments.

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