What is a 401(k) rollover?
A rollover moves money from one tax-advantaged retirement account to another without the move counting as a taxable withdrawal. It lets you combine an old employer's 401(k) into an IRA (individual retirement account) or a new employer plan with no tax and no penalty, as long as it is done correctly.
The rules sit in Internal Revenue Code section 402(c), and the IRS summarizes them in its rollover guidance.
Leaving a job does not move the 401(k) with you. The account stays in the old plan, invested in whatever funds you picked years ago, and charged whatever that plan charges former employees. Change jobs three times and three accounts can sit unwatched.
What is the difference between a direct and an indirect rollover?
In a direct rollover the old plan sends the money straight to the new account, so you never hold it. In an indirect rollover the plan pays you, and you have 60 days to deposit it into another retirement account.
The direct route has no withholding and no deadline to track. The indirect route is where people lose money.
When a plan pays an eligible rollover distribution to you, it must withhold 20% for federal income tax. You cannot waive this. To keep the whole rollover tax-free, you must deposit the full original amount, including the 20% the plan withheld, using money from another source.
Worked example: the 80% trap. You request a $50,000 indirect rollover. The plan withholds $10,000 and sends you $40,000. If you deposit only $40,000 within 60 days, the missing $10,000 counts as a distribution. It becomes taxable income, plus a $1,000 penalty (10%) if you are under 59½. To avoid that, deposit $50,000, covering the $10,000 yourself, and recover the withheld amount when you file your tax return.
How much do high fees in old accounts really cost?
Fees reduce your balance every year, and the loss compounds. The Department of Labor's publication on 401(k) plan fees gives this example: $25,000 invested for 35 years at a 7% return with no further contributions. At 0.5% annual fees it grows to about $227,000. At 1.5% it grows to about $163,000.
One percentage point of fees removed roughly 28% of the final balance: ($227,000 minus $163,000) divided by $227,000 is about 28%.
What counts as expensive? An expense ratio is the yearly percentage of your assets a fund takes to operate. Broad index funds often charge well under 0.2%, so a fund charging 1% or more needs a specific reason to be in your account.
| Cost of scattered accounts | How it happens |
|---|---|
| Expensive fund menu | Former employees keep the funds they chose years ago, not the cheapest ones available today |
| Ex-employee fees | Some plans pass recordkeeping costs to former employees as a flat yearly charge |
| Forced cash-outs | Small balances can be moved to a default IRA, often in low-return holdings |
| Hidden mix | No single screen shows your combined holdings, so overlap and drift go unnoticed |
Can a plan force me out of an old 401(k)?
Yes, for small balances. Plans may move a former employee's balance of $7,000 or less out of the plan without consent. SECURE 2.0 raised that limit from $5,000 to $7,000, effective for distributions after 2023. The rule is permissive, so a plan may use it but does not have to.
Balances that are forced out generally go to a default IRA at a provider the plan chooses. The money is still yours and can be moved at any time, but default IRAs often hold cash-like investments that earn little until you act.
How do I consolidate old 401(k) accounts step by step?
List every account, compare costs, match the account types, ask for a direct transfer, and confirm the money gets invested. Each step prevents a specific, common mistake.
1. Find every account. List each employer that offered a plan. Check old statements, ask former HR departments, and use the Department of Labor's Retirement Savings Lost and Found database, created under SECURE 2.0. Its coverage and eligibility have been limited, so check the current rules on the DOL site. The plan's Form 5500 filings, posted on the DOL site, can also help identify a plan.
2. Compare costs before moving. Look up the expense ratio of every fund you hold, and of what the destination offers. Some large employer plans have institutional share classes that are cheaper than anything sold to individuals. Leaving one of those can raise your costs.
3. Match tax types. Traditional 401(k) money goes to a traditional IRA, and Roth 401(k) money goes to a Roth IRA. Moving traditional money into a Roth account is a conversion and is taxed as income that year.
4. Ask for a direct rollover in writing. The check, if there is one, should be payable to the receiving institution for your benefit, not to you personally.
5. Confirm the money is invested. Rolled-over cash often lands in a money market sweep. Until you choose investments, it may earn little.
Is consolidating always the right move?
No. Consolidating is usually sensible, but staying put wins in some cases. The comparison should be run, not assumed.
Creditor protection. Assets in an ERISA-covered 401(k) generally have strong protection from creditors, including in federal bankruptcy. IRA protection in bankruptcy is capped, at $1,711,975 for cases filed on or after April 1, 2025 (adjusted every three years). Money rolled over from an employer plan is treated more favorably than regular IRA contributions, but mixing the two can complicate that. State law also varies, so large balances deserve a check with a professional.
The rule of 55. If you leave a job in or after the year you turn 55, you can generally take penalty-free withdrawals from that employer's 401(k). Rolling it to an IRA gives that up.
The pro-rata rule. When you convert money to a Roth IRA, the IRS counts all of your traditional, SEP and SIMPLE IRA balances together to decide how much of the conversion is taxable. A large rolled-over traditional IRA can make backdoor Roth contributions largely taxable. Rolling into a current employer's plan, if it accepts rollovers, avoids that.
Cheap institutional funds. A plan with funds charging a few hundredths of a percent may beat any alternative on cost.
What mistakes should I avoid?
Cashing out to simplify. This is the most expensive option. It adds the full balance to taxable income for the year, adds a 10% penalty if you are under 59½, and ends the money's future growth.
Taking the check yourself. An indirect rollover brings mandatory 20% withholding and a 60-day deadline. A direct rollover avoids both.
Ignoring a small account. A balance of $7,000 or less can be moved out of the plan without your say.
Mixing tax types. Sending traditional money into a Roth account creates a tax bill you may not expect.
Worked example: three accounts, two decisions
A 38-year-old has three old accounts. Plan A holds $18,000 in funds charging 1.10% a year plus a $50 yearly ex-employee fee. Plan B holds $42,000 in an institutional index fund charging 0.04% with no ex-employee fee. Plan C holds $6,200, under the $7,000 force-out limit.
Plan A: roll out. Staying costs 1.10% of $18,000, which is $198, plus $50, for $248 a year. A destination IRA index fund at 0.04% costs about $7. The gap is roughly $241 a year, and it compounds for decades.
Plan B: likely stay. A retail IRA at 0.04% saves nothing on cost, and moving gives up the 401(k)'s stronger creditor protection. Convenience alone is a weak reason to move it.
Plan C: roll out. It could be forced into a default IRA at any time. Moving it first lets the owner choose where it is invested.
The answer was not consolidate everything. It was consolidate two of the three after comparing the real fee schedules.
What this means for you
Do this once a year or whenever you change jobs.
- Write down every employer plan you have ever had, and confirm where each balance is today.
- Pull the expense ratio of each fund you own and note any yearly account fee.
- Ask each old plan whether it charges ex-employee fees and whether it offers institutional funds.
- Always request a direct rollover, never a check made out to you.
- After the money moves, confirm it is invested and not sitting in cash.
- Once everything is in one place, check your combined holdings for overlap and concentration. Cluenex stock pages at https://cluenex.com/stocks/ show business quality and the main risk for each of about 1,000 large US-listed stocks, which can help once you see what you own.
- For large balances, Roth conversions or bankruptcy protection questions, ask a fee-only fiduciary or a tax professional before acting.
Related guides: how to diversify a stock portfolio and the true cost of a 1% advisory fee.