Should You Roll Over Your 401k to an IRA

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Should You Roll Over Your 401k to an IRA — Or Leave It Alone

The moment I left my corporate job at thirty-four, I had $187,000 sitting in a 401k that suddenly felt like a decision I couldn’t avoid anymore. Everyone told me to roll it over to an IRA. Nobody told me whether I actually should. So I spent three weeks reading conflicting advice, talking to a financial advisor who wanted to sell me something, and ultimately realizing that the question itself was wrong. The real question isn’t “what’s the difference between a 401k and an IRA”—you’ve probably already looked that up. The real question is: given your specific situation, does rolling over actually help you?

That’s what we’re solving here.

Three scenarios that determine your move

Your decision lives in one of these three situations. Not all of them benefit from a rollover.

Scenario 1 — You just left your employer

You’re unemployed, job-hunting, or starting somewhere new. Your old 401k is still sitting with your former employer’s plan. This is the most common rollover moment — and honestly, it’s also where most people should actually do it.

Here’s where the numbers get interesting: your former employer’s 401k plan charges you $150-$300 annually in administrative fees, even if you stopped contributing years ago. A typical low-cost IRA custodian (Vanguard, Fidelity, Schwab) charges $0 per year. Over twenty years on a $150,000 balance, that’s $3,000-$6,000 you’re leaving on the table by doing nothing.

The move: Roll over directly to an IRA at a custodian with rock-bottom expense ratios. Call your old plan’s administrator and request a “direct rollover”—they mail a check to your new IRA custodian, not to you. This avoids the 60-day window trap where you have to deposit it yourself or face a 10% penalty.

My mistake here: I took the check myself because I was disorganized. It counted toward my annual income for tax purposes that year, even though I deposited it properly within the window. Should have just done the direct rollover from the start.

Scenario 2 — You’re retiring within five years

You’re fifty-eight, fifty-nine, or sixty, and retirement is within reach. You have an old 401k from a job that ended ten years ago. The calculus changes completely.

Roll this into an IRA, and you can’t touch it penalty-free until sixty-five (unless you use the Roth conversion ladder, which is complex). But leave it in your 401k? You can withdraw money penalty-free at fifty-five if you’ve separated from service—the “Rule of 55” exception. This is massive.

The move: Leave it. Or split it. Withdraw what you need before sixty-five from the 401k penalty-free, and roll any remainder to an IRA later. You get five years of tax-free access that an IRA won’t give you.

Scenario 3 — You’re already retired, and your 401k is just sitting there

You’re sixty-seven, retired for four years, and have an old 401k you haven’t touched. You started taking IRA distributions already. The question now is: does the old 401k need to stay, or can it move?

By now, your Required Minimum Distributions (RMDs) are mandatory anyway. Rolling to an IRA actually simplifies this—you take one RMD from one IRA instead of juggling multiple accounts. The fee savings also matter, though less urgently since you’re not working anymore.

The move: Roll it over, then consolidate all your IRAs into one. Easier to manage, lower fees, simpler RMD math.

Fee comparison when you’re deciding

Money flows to cheapness. Let me show you exactly how much.

The average 401k plan charges between 0.5% and 1.5% annually in plan-level fees plus whatever your specific investments cost. On a $150,000 balance, that’s $750–$2,250 per year. Some plans are cheaper. Most aren’t.

An IRA at Fidelity, Vanguard, or Schwab? $0 per year for account maintenance. You pay fund expense ratios if you pick expensive funds, but you can pick the cheapest index funds available—often 0.03% annually.

Over twenty years, with 7% annual returns:

• 401k at 1% total drag: your $150,000 grows to approximately $529,000
• IRA at 0.1% total drag: your $150,000 grows to approximately $558,000

The difference is twenty-nine thousand dollars. Probably should have opened with this section, honestly. But most people don’t see this math before deciding. They just see the rollover form and assume it’s optional.

The pro-rata rule trap and who gets hit

Here’s where I almost made a catastrophic mistake, and it’s why I’m including this section.

I had rolled my corporate 401k into a traditional IRA without thinking about what happened next. Two years later, making $165,000 annually, I decided to do a backdoor Roth conversion—a strategy for high earners to contribute to Roth IRAs when income limits block the direct route. I was going to contribute $7,000 to a traditional IRA, then immediately convert it to a Roth.

My accountant stopped me. “Did you forget about your regular IRA?”

I had completely forgotten that I’d rolled over my 401k to a traditional IRA. When I attempted that backdoor Roth conversion, the IRS’s pro-rata rule would kick in. This rule says: if you have any pre-tax IRA balances, you must count them when converting to Roth. The tax gets calculated across your entire pre-tax IRA balance—not just the $7,000 you’re converting.

My rolled-over 401k was about $210,000 at that point. Converting $7,000 to Roth would have triggered taxation on approximately $6,650 of that conversion because of the pro-rata calculation. I would have owed roughly $1,700 in federal taxes on a transaction I thought was tax-free.

The pro-rata rule hits people making $100,000+ who have a traditional IRA (rolled from a 401k or inherited), want to do backdoor Roth conversions, and forgot they had the traditional IRA.

The solution: Convert your 401k to a Roth IRA directly if possible, not to a traditional IRA. Or use a mega backdoor Roth route if your plan allows it. But you must know this rule exists before rolling anything over.

When to leave your 401k alone

Rolling over isn’t always right. These are the legitimate reasons to keep your money in the employer’s plan.

You’re still employed at that company

Don’t roll over an active 401k while you’re employed. You might need the loan feature — 401ks let you borrow up to $50,000 or half your balance (whichever is less) penalty-free. IRAs don’t allow loans at all. If you leave the job later, then you roll it over.

You have company stock at a major gain

If your company gave you stock through an ESOP or you bought it cheap and it’s now worth significantly more, rolling it to an IRA triggers capital gains tax on the appreciation. But if you use a specific strategy called “Net Unrealized Appreciation,” you can withdraw just the stock, pay tax only on your cost basis, and keep the gains in a taxable account at lower long-term capital gains rates.

Example: You own $80,000 in company stock that you bought for $20,000. Rolling to an IRA triggers a $60,000 taxable event. Keeping it in the 401k and using NUA, you pay tax only on the $20,000.

You’re under fifty-nine and a half and need money before sixty-five

The Rule of 55 applies only to 401ks, not IRAs. If you separate from service in the year you turn fifty-five or later, you can withdraw from that specific 401k without the 10% early withdrawal penalty. IRAs penalize you until fifty-nine and a half. You’re fifty-four, leaving the job soon, and need cash? Leaving the 401k alone buys you five years of penalty-free access.

Your next step after deciding

If you decided to roll over: Call your current 401k plan administrator and request a “direct rollover to an IRA” form. Never ask for a check made out to you—the sixty-day clock starts the moment you receive it, and if you miss the deadline, it becomes a taxable distribution and a 10% penalty if you’re under fifty-nine and a half.

Once the check arrives (it goes directly from your old plan to your new IRA custodian), your new custodian will deposit it into your IRA account. This takes three to seven business days. You’re done.

If you decided to leave it: Document the reason. Write it down. In three years, when you get a statement from that old 401k and forget why you didn’t roll it, you’ll be grateful you have a note explaining the pro-rata rule or the Rule of 55 or the company stock situation. Future you won’t remember the reasoning.

Your situation determines whether rolling over saves you money or costs you flexibility. Read through those three scenarios again. Whichever one matches your life—that’s your answer.

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