What Should You Do With an Old 401(k)?

This is what many people do, at least initially. And in some cases, it's actually the right call.

If your old 401(k) is invested well, has low fees, and offers investment options you like, leaving it in place isn't necessarily a mistake. Some employer-sponsored plans have access to institutional investment funds with very low expense ratios that aren't always available to individual investors.

That said, there are drawbacks to leaving money behind. Old accounts can be easy to forget, harder to monitor, and if you've changed jobs multiple times, managing several retirement accounts across different employers can quickly become complicated.

Before deciding to leave the account where it is, ask yourself a few simple questions: Do I know what it's invested in? Am I comfortable with the fees? Is there a reason I'm keeping it here?

If you're unsure, it may be worth taking a closer look before leaving it on autopilot.

If your current employer offers a 401(k), rolling your old account into your new one is often a clean and convenient solution.

It consolidates your retirement savings into one place, simplifies account management, and keeps your money in a tax-advantaged account without triggering taxes or penalties, as long as the rollover is handled correctly.

The key question to ask is whether your new employer's plan is actually an improvement. Not all 401(k) plans are created equal. Some have limited investment choices or higher fees than others. If your new plan isn't as strong as the one you left behind, rolling into it may not be the best move.

It's also worth confirming that your new plan accepts incoming rollovers before assuming this option is available.

For many people, rolling an old 401(k) into an Individual Retirement Account (IRA) offers greater flexibility.

A rollover IRA gives you access to a broader range of investments than most employer-sponsored plans. You're no longer limited to the investment lineup selected by your employer, and consolidating multiple retirement accounts into one place can make your finances easier to manage.

When completed correctly through a direct rollover moving your retirement savings from a pre-tax 401(k) into a Traditional IRA generally does not trigger taxes or early withdrawal penalties. Likewise, moving Roth 401(k) assets into a Roth IRA generally preserves their tax-advantaged status.

The key is making sure you're rolling your retirement savings into the appropriate type of IRA. If you're unsure, consider speaking with a qualified financial or tax professional before making a move.

For most people, cashing out an old 401(k) is the most expensive option available.

If you're under age 59½, you'll generally owe ordinary income taxes on the full withdrawal, plus a 10% early withdrawal penalty. On a $100,000 account, that combination could easily reduce what you receive by tens of thousands of dollars, depending on your tax bracket.

The biggest cost isn't always the tax bill today. Rather, it's the decades of potential growth you're giving up. Money that stays invested has the opportunity to compound over time. Once it's withdrawn, that opportunity is gone.

There are situations where accessing retirement savings may be necessary. But if you have another option, cashing out should generally be considered only after carefully weighing the long-term consequences.

The right answer depends on your situation.

If your old plan has exceptional investment options and low fees, leaving it where it is may make sense. If your goal is to simplify your finances, rolling it into your new employer's plan or an IRA could be a better fit.

Whatever you decide, I'd encourage you to avoid the most common outcome: making no decision at all.

An old 401(k) may not demand your attention every day, but it's still an important part of your retirement savings. Taking the time to understand your options today can help you avoid unnecessary costs, simplify your financial life, and aim to ensure your retirement savings continue working toward the future you're building.

This content is for educational purposes only and does not constitute personalized financial, tax, or legal advice. Please consult a qualified financial advisor before making decisions about your retirement accounts.