What happens to a 401(k) when you leave a job?

It depends on your balance. Over $7,000: your account stays with the former employer's plan (you just can't contribute). $1,000-$7,000: the employer may auto-roll it into an IRA. Under $1,000: the employer may cash it out and send you a check (minus 20% withholding). Your money doesn't disappear — but you need to track it down.

Is there a deadline to rollover a 401(k)?

There's no deadline to do a direct trustee-to-trustee rollover — you can roll over an old 401(k) at any time, even years later. However, if you received a check (indirect rollover), you have 60 days to deposit it into a new retirement account or it's treated as a taxable withdrawal with a potential 10% early withdrawal penalty.

How do I find a lost 401(k)?

Try these steps: (1) Contact your former employer's HR department, (2) Check the plan administrator (Fidelity, Vanguard, etc.) — search by SSN, (3) Use the National Registry of Unclaimed Retirement Benefits at unclaimedretirementbenefits.com, (4) Search your state's unclaimed property database, (5) Check the Department of Labor's abandoned plan database.

I Forgot to Rollover My Old 401(k) — What Are My Options?

If you forgot to rollover your old 401(k), don’t worry — there’s no deadline for a direct rollover. Your money is likely still in the old plan. Find it, then roll it into your current 401(k) or an IRA to get better investment options and lower fees.

What Probably Happened to Your Old 401(k)

Your Balance When You Left	What Likely Happened
Over $7,000	Still in the old employer’s plan — you just can’t contribute
$1,000-$7,000	May have been auto-rolled into a default IRA
Under $1,000	May have been cashed out and mailed as a check (minus 20% tax)
Any balance (employer went bankrupt)	Transferred to a successor plan or PBGC

How to Find Your Old 401(k)

Method	How
Contact former employer HR	Ask for the plan administrator and your account status
Check the plan provider directly	Fidelity, Vanguard, T. Rowe Price, etc. — search by SSN
National Registry of Unclaimed Retirement Benefits	unclaimedretirementbenefits.com
State unclaimed property search	missingmoney.com or your state’s unclaimed property site
DOL abandoned plan database	askebsa.dol.gov
Form SSA-1099 / Tax records	Check old tax returns for 1099-R forms from the plan

Your Options Once You Find It

Option	Pros	Cons	Best For
Roll into current 401(k)	Consolidation; may have institutional fund pricing	Limited to current plan’s investment options	People who want simplicity
Roll into Traditional IRA	Full investment flexibility; you choose the custodian	No 401(k) loan option; may affect backdoor Roth	Most people
Roll into Roth IRA	Tax-free growth; no RMDs	Owe income tax on the entire converted amount NOW	Those in a low tax bracket now
Leave it in old plan	No action needed	Higher fees; forgotten again; limited options	If the old plan has great funds
Cash it out	Immediate access to money	20% withholding + income tax + 10% penalty if under 59½	Almost never recommended

Step-by-Step Rollover Process

Step	Action	Details
1	Open an IRA (if you don’t have one)	Fidelity, Schwab, Vanguard — free to open
2	Get your new account number	From the receiving institution
3	Contact old plan administrator	Request a “direct rollover” to your new account
4	Specify DIRECT (trustee-to-trustee) transfer	NOT an indirect rollover — avoids 20% withholding
5	Provide new account details	Account number, institution name and address
6	Confirm completion	Check both accounts; may take 1-3 weeks

Cost of Leaving an Old 401(k) Behind

Issue	Impact
Higher expense ratios	Old plans often charge 0.5-1.5% vs. 0.03-0.10% in an IRA with index funds
Administrative fees	$25-$75/year in some plans
Limited investment options	Stuck with whatever the old plan offers
Forgotten account	Easy to lose track; heirs may not know about it
$100K left for 20 years at 0.5% higher fees	Costs you ~$10,000-$25,000 in lost returns

The Bottom Line

There’s no deadline for a direct rollover, so even if it’s been years, you can still move your old 401(k) into an IRA or your current employer’s plan. The process takes about 30 minutes to initiate and 1-3 weeks to complete. Roll it into a low-cost IRA at Fidelity, Schwab, or Vanguard to maximize your investment options and minimize fees. An estimated 24 million Americans have forgotten 401(k) accounts — don’t leave yours behind.