Most people leave their old 401(k) behind and never think about it again. Here's what that decision is actually costing them.
If you've changed jobs in the last few years — or even the last decade — there's a decent chance you have a 401(k) sitting at a former employer that you haven't touched since your last day.
You're not alone. There are an estimated 29 million forgotten 401(k) accounts in the United States, holding over $1.6 trillion in assets. Many of them could belong to people who are financially responsible, reasonably organized, and just never got around to it.
"I'll deal with it eventually" is the most expensive financial strategy most people never realize they're using.
Let me show you what doing nothing could actually cost you.
Cost #1: Fees You Don't Know You're Paying
Every 401(k) plan charges fees. The question is how much — and whether you're getting anything for them.
Employer-sponsored plans vary enormously in quality. Large companies with significant bargaining power often negotiate institutional share classes with very low expense ratios. But plenty of plans — especially at mid-size companies or older employers — are loaded with high-cost funds, administrative fees, and in some cases revenue-sharing arrangements that exist to benefit the plan provider, not you.
When you were an active employee, your employer may have been subsidizing some of those administrative costs. Once you're a former employee? You're often paying full freight, and the statement showing you exactly what that is can be surprisingly hard to find.
The difference between a 0.05% expense ratio and a 1.00% expense ratio on a $300,000 account is roughly $2,850 per year. Over 20 years, compounded, that gap becomes significant — we're talking about a difference in ending account value that can approach six figures depending on the balance and return assumptions.
You may be paying that difference right now without realizing it.
Cost #2: An Investment Menu That Doesn't Fit Your Life Anymore
Your old 401(k) has a fixed menu of investment options. Whatever funds your former employer selected — that's what you've got. You can't add a position, adjust to a different strategy, or respond to changes in your life with anything beyond shuffling between the same limited options.
The portfolio you set up when you were 34 and just trying to pick something reasonable may look nothing like what makes sense at 44 with a paid-off house, a larger balance, and a clearer picture of when you actually want to retire.
A frozen 401(k) at a former employer is a portfolio that can't evolve. That's a real cost, even if it doesn't show up as a line item on your statement.
Cost #3: Complexity That Quietly Grows
Every account you leave behind adds a layer of complexity to your financial life. Another login. Another statement. Another plan document with its own rules about distributions, beneficiary designations, and required minimum distributions.
Most people underestimate how much this matters — until something happens. A death in the family. A divorce. A health event. Suddenly someone is trying to locate and access accounts that were never properly organized, and the process is far harder than it needed to be.
Beneficiary designations on old 401(k) accounts are one of the most commonly overlooked estate planning issues we see. If you named an ex-spouse, a parent who has since passed, or simply never updated the form after a major life change — that designation controls who gets the money, regardless of what your will says.
Your will does not override a 401(k) beneficiary designation. The form on file at the plan wins.
Have an Old 401(k) You've Been Meaning to Deal With?
We help families in St. Louis consolidate, roll over, and thoughtfully position old retirement accounts as part of a coordinated wealth plan. It's one of the most straightforward ways you can bring more clarity and efficiency to your financial picture.
We help families preserve and grow meaningful wealth.
So Why Don't People Just Roll It Over?
A few reasons, all of them understandable:
They think it's complicated. It isn't — at least not when done correctly. A direct rollover from a former employer's 401(k) to a traditional IRA is a non-taxable event. The money moves custodian-to-custodian. You don't touch it, you don't owe taxes on it, and it doesn't count as income.
They're worried about losing creditor protection. This comes up occasionally and it's worth addressing directly. 401(k) plans do have strong federal creditor protection under ERISA. IRA protections vary by state. In Missouri, IRAs have solid protection as well — but if this is a genuine concern for your situation, it's worth a specific conversation rather than a blanket assumption either way.
They have company stock in the plan. This is the one situation that deserves a real pause before rolling over. If you've accumulated highly appreciated employer stock inside your 401(k), there's a tax strategy called Net Unrealized Appreciation (NUA) that can allow you to pay long-term capital gains rates on that appreciation rather than ordinary income rates. Rolling it into an IRA without thinking through NUA first can be a costly mistake. This is a case where a 20-minute conversation before you act is worth a lot.
They just haven't gotten around to it. This is the most common one. And it's the one that's hardest to justify once you see what the delay is actually costing.
What a Rollover Actually Looks Like
For most people with a straightforward old 401(k) — no employer stock concentration, no ongoing loans — the process is genuinely simple:
Step 1: Open a traditional IRA at your chosen custodian if you don't already have one.
Step 2: Contact your former employer's plan administrator and request a direct rollover to the IRA. "Direct" means the check is made out to the custodian for your benefit — not to you personally.
Step 3: The funds transfer. The account is now in your IRA, invested according to your strategy, with full visibility and control.
That's it. No taxes. No penalties. No drama.
The part that requires more thought is what happens after the rollover — how the money gets invested, how it fits into your overall retirement picture, and how it gets coordinated with any other IRAs, Roth accounts, or taxable investments you have. That's where working with an advisor adds real value.
The One Exception Worth Knowing
If you're still working and plan to work past 73, your current employer's 401(k) may allow you to delay required minimum distributions on that account beyond the normal RMD age. IRAs don't have that option — RMDs start at 73 regardless. For some people who plan to keep working and don't need the income, keeping money in a current employer's plan (not a former one) can make sense for this reason.
But that logic applies to your current employer's plan, not to the orphaned account from the job you left in 2017.
The Bottom Line
Leaving an old 401(k) behind isn't catastrophic. It's not going anywhere. But it may be quietly costing you — in fees, in inflexibility, in complexity, and in the compounding opportunity cost of a portfolio that isn't being actively managed as part of your actual plan.
We suggest discussing your options to determine if a rollover makes sense for you. The decision to keep doing nothing can cost you over time
If you've got an old account you've been meaning to deal with, this is your reminder to deal with it.
More from One Bridge Wealth Management:
- John Bogle: The Legacy of the Vanguard Founder and His Philosophy on Investing — The case for low costs and simplicity — exactly what a well-structured rollover IRA should reflect.
- Overconcentrated Stock Portfolios: Real Examples of Wealth Destruction — Is your 401(k) overly concentrated? See how that is a risk.
- The One-Page Financial Plan: Less Distraction, More Focus — Rolling over an old 401(k) is a great first step. Here's how to build the bigger picture around it.
- Estate Planning for Individuals With $5 Million Portfolios — Beneficiary designations on retirement accounts are one of the most overlooked estate planning issues. This post covers the full picture.
Ready to Finally Deal With That Old 401(k)?
We work with families across St. Louis to consolidate old retirement accounts, model the tax picture, and help position your money in a way that aligns with your overall plan. Let's start with a conversation.
We help families preserve and grow meaningful wealth.
One Bridge Wealth Management | Clayton, MO | onebridgewealth.com
This content is for informational purposes only and does not constitute tax, legal, or investment advice. Please consult a qualified professional regarding your specific situation. If you are considering rolling over money from an employer-sponsored plan, you often have the following options: leave the money in the current employer-sponsored plan move it into a new employer-sponsored plan, roll it over to an IRA, or cash out the account value. Leaving money in the plan may provide special benefits including access to lower-cost investment options: educations services: potential for penalty-free withdrawals: protection from creditors and legal judgements: and the ability to postpone required minimum distributions. If our plan account holds appreciated employer stock, there may be negative tax implications of transferring the stock to an IRA. Please consult a qualified professional regarding your specific situation.