How to Roll Over a 401(k) (Step by Step)

You left a job, and your old 401(k) is still sitting there with your former employer. Maybe you forgot about it. Maybe you have three of them scattered across three old jobs. That is more common than you think, and it is costing people money in forgotten fees and funds they never chose. Rolling that money into an account you control is one of the cleaner moves in personal finance. Here is how to do it without tripping a tax bill.

Step 1: Decide where the money is going

You have three main homes for an old 401(k). You can roll it into your new employer's 401(k), roll it into a traditional IRA at a brokerage, or leave it where it is. For most folks, a traditional IRA gives you the widest set of low-cost choices and the least friction.

Say your old plan charged you an all-in cost of 1.1 percent a year, and a plain index fund in an IRA runs 0.04 percent. On a $60,000 balance, that is the difference between paying about $660 a year and about $24 a year. Over 20 years, that gap alone can quietly eat tens of thousands of dollars in growth. The account you choose matters.

Step 2: Open the receiving account first

Before you touch the old money, open the account it is moving into. If you picked an IRA, open a traditional IRA at a reputable brokerage. It takes about 15 minutes online and costs nothing to open.

Match the account type to the money type. Pre-tax 401(k) dollars roll into a traditional IRA. Roth 401(k) dollars roll into a Roth IRA. If you mix those up, you can accidentally create a taxable event, so keep the pre-tax bucket with the pre-tax bucket.

Step 3: Ask for a direct rollover, not a check to you

This is the step that saves people from a nasty surprise. Call your old 401(k) provider and ask for a direct rollover, sometimes called a trustee-to-trustee transfer. The money moves straight from the old plan to your new account, and nothing gets withheld.

If you instead take an indirect rollover, the plan mails a check to you and withholds 20 percent for taxes right off the top. On a $60,000 balance, they send you $48,000 and hold back $12,000. You then have 60 days to deposit the full $60,000 into your IRA, which means you have to come up with that missing $12,000 out of your own pocket and wait until tax time to get it back. Miss the 60 days, and the whole thing counts as a taxable withdrawal, plus a 10 percent penalty if you are under 59 and a half. Direct rollover avoids all of that. Choose it.

Step 4: Handle the check correctly if one shows up

Even with a direct rollover, some providers still mail a paper check. The key is who it is made out to. A proper rollover check reads something like "Brokerage Name FBO Your Name." FBO means "for benefit of." That check is not payable to you personally, so it is not a taxable distribution. You just forward it to your new brokerage or snap a photo in their app.

If the check is made out to you directly, that is the indirect route, and the 60-day clock and 20 percent withholding are in play. Call and ask them to reissue it to the brokerage if you can.

Step 5: Invest the money once it lands

Here is the mistake that quietly costs the most. The money arrives in your IRA and lands in cash, sitting there earning almost nothing. It does not invest itself. Log in, confirm the full amount arrived, and actually buy your investments, whether that is a broad index fund or a target-date fund.

Picture rolling over $60,000 and letting it sit in cash for two years because you forgot this step. At a reasonable 7 percent return, that is roughly $8,700 in growth you skipped. The rollover is not finished until the money is invested.

Bottom line: Open the receiving account first, ask for a direct rollover so nothing gets withheld, match pre-tax to pre-tax and Roth to Roth, and then actually invest the money once it arrives. Do those four things and you keep your full balance working for you.

This is general education, not personal investment advice, so check with a licensed professional about your situation.

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