Changing jobs? Don't leave your old 401(k) behind.

New year, new job — old 401(k)?

Moving retirement savings when switching jobs isn’t always top of mind. It’s one more thing on your to-do list, and frankly, many folks are flummoxed by the process. But kicking the decision down the road can set you up for a fiscal pitfall.

Think of it as retirement lost.

And while hiring has slowed in recent months, there are still plenty of people changing employers and starting new positions.

In December, employers added 216,000 jobs, according to the Bureau of Labor Statistics’ latest jobs report, a sign that the labor market remains robust. And that may continue for a while longer. In a recent survey conducted by consulting firm Robert Half, nearly 6 in 10 managers said they expect to increase the number of permanent roles in the first half of 2024.

What that means is more workers changing employers this year, which can significantly impact retirement planning.

If that’s you, pay attention. Once the new-kid nerves fade and on-ramping is done, it’s time to focus on what to do with the 401(k) or other work-sponsored retirement account, such as a 403(b) parked at your former employer’s plan.

Read more: How much can you contribute to your 401(k) in 2024?

Young businessman carrying his staff and leaving his workplace after getting fired.
Changing jobs means a new employer and taking control of your old 401(k) retirement account so it's not forgotten. (Getty Creative) · SrdjanPav via Getty Images

“The Bureau of Labor Statistics estimates that people hold about 12 jobs throughout their working lives, so the odds that you’ll need to decide what to do with a 401(k) at some point are high,” Anne Ackerley, head of BlackRock's Retirement Group, told Yahoo Finance. “It’s important to understand your options — and the tradeoffs they come with.”

Here’s the breakdown of options when you change jobs to maximize the return on your 401(k) retirement plan.

You basically have four choices.

1. Take the money and run

The first one: cash out. One in 3 workers cash out their retirement accounts when leaving jobs, according to research provided by the Women’s Institute for Secure Retirement (WISER). For workers between the ages of 20 and 30, that pops up to 41% or higher, Cindy Hounsell, president and founder of WISER, told Yahoo Finance.

Changing jobs opens the door to taking your money out of your retirement plan and spending it. But this has huge repercussions. In general, you pay tax on the distribution and a 10% penalty if you’re younger than 59 ½ per IRS rules.

I cashed out when I was 30. It's the biggest financial misstep I ever made when considering what those savings would have added up to today. So that's No.1: Try not to cash out.

Happy young woman holding dollar currency satisfied isolated over pink background with confetti.
Skip the smile. Cashing out a 401 (k) account held at a former employer's plan can be a big mistake. In general, you pay tax on the distribution and a 10% penalty if you’re younger than 59 ½ per the IRS rules. (Getty Creative) · Denis_Vermenko via Getty Images

The other three options are much more preferable.

2. Leave it behind in your old employer’s plan

“Every 401(k) plan will have its own set of rules, but one likely option is that you could leave your savings where they are in your old employer’s plan,” Ackerley said. “This ‘do nothing’ option might seem convenient in the moment, but the biggest risk is that you forget it’s there or how to access it down the line.