To find lost 401(k) money, start with the Department of Labor’s new Retirement Savings Lost and Found database, confirm the account existed using old tax records, and then work directly with the plan administrator for each employer that shows up. Federal law keeps your retirement money protected even when a company merges, changes names, or shuts down, so the search is almost always a matter of finding the right people rather than recovering something that’s gone.
Start With the DOL Retirement Savings Lost and Found
The fastest single step is the Department of Labor’s Retirement Savings Lost and Found database at lostandfound.dol.gov, created under the SECURE 2.0 Act. It pulls federal reporting data to show every private-sector retirement plan linked to your Social Security number, along with contact information for each plan’s administrator.1U.S. Department of Labor. Retirement Savings Lost and Found Database
To use it, verify your identity through Login.gov. You’ll need a government-issued photo ID, your Social Security number, and a mobile device. Once you’re in, the system returns a list of plans tied to your SSN.
A plan appearing in your results doesn’t guarantee money is still waiting. Your balance may have already been paid out, rolled over, or converted to an annuity. Only the plan administrator listed in the results can tell you what remains.1U.S. Department of Labor. Retirement Savings Lost and Found Database
The database covers defined benefit pensions and defined contribution plans, including 401(k)s, from private employers and unions. It does not cover IRAs, government employee plans, or plans from certain religious organizations.
Confirm the Account With Your Old W-2s
If the Lost and Found comes up short, or you want to verify a plan the database missed, dig out your W-2 forms from the years you worked at each employer. Box 12 carries letter codes that flag retirement contributions:
- D: 401(k) elective deferrals
- E: 403(b) salary reduction contributions
- F: SARSEP contributions
- G: 457(b) deferred compensation contributions
- S: SIMPLE IRA deferrals
Any of these codes proves money left your paycheck and went into a retirement account that tax year.2Internal Revenue Service. Common Errors on Form W-2 Codes for Retirement Plans You now have a confirmed employer name and a date range to work with.
Check filing cabinets and email archives for old account statements or a Summary Plan Description. That document lists the formal legal name of the plan sponsor and the plan itself. Companies rename and reorganize constantly, and the exact corporate name from the years you worked there makes every phone call faster.
Contact the Former Employer or Its Successor
Reaching the HR or benefits department of a former employer is often the most direct path to your money. If the company was acquired or merged, look up the successor. The buyer almost always absorbed the retirement plan, and current HR should have records of former participants.
Under ERISA, plan administrators must maintain detailed participant records.3eCFR. 29 CFR Part 2520 – Rules and Regulations for Reporting and Disclosure Even if the company shut down entirely, your money doesn’t disappear with it. Federal law requires plan assets to sit in a trust separate from the employer’s general funds, and those assets can’t be used for the employer’s benefit.4Office of the Law Revision Counsel. 29 U.S. Code 1103 – Establishment of Trust Bankruptcy doesn’t reach it.
Once you have the plan administrator on the line, ask them to verify your balance and tell you exactly what paperwork you need to roll the money over or take a distribution.
Check Whether Your Balance Was Force-Rolled Into an IRA
This one surprises people. If you left a job with a small balance and never told the plan what to do with it, the plan may have moved the money on its own. Under rules strengthened by the SECURE 2.0 Act, when a departing employee’s vested balance is $7,000 or less and the person doesn’t respond to the plan’s notices, the plan can automatically roll that balance into a safe harbor IRA chosen by the administrator.5U.S. Department of Labor. Auto-Portability Intended to Reduce Cash-Outs of Retirement Savings
The plan is required to notify you in writing before this happens.6Internal Revenue Service. IRS Notice 2026-13 – Safe Harbor Explanations, Eligible Rollover Distributions If you moved after leaving the job, that notice likely went to an old address. You end up with money in an IRA you never opened, at a financial institution you’ve never heard of, invested in extremely conservative options with minimal returns.
To find one, ask the old employer’s plan administrator whether a forced distribution was processed and where the funds went. The Lost and Found database may surface the original plan, and the administrator listed there can trace the transfer.
Search Public Registries
When direct employer contact stalls, a few registries can fill the gap. The National Registry of Unclaimed Retirement Benefits is a free, nationwide database where employers list participants they can’t locate.7Pension Benefit Guaranty Corporation. External Resources for Locating Benefits MissingMoney.com aggregates unclaimed property records from state treasurers across the country. A hit there generally tells you which financial institution holds the funds and how to file a claim.
One caveat about state unclaimed property: ERISA generally prevents states from forcing retirement plan funds to be turned over as unclaimed property, so a plan fiduciary can’t be compelled to send your 401(k) balance to a state treasury. Some fiduciaries do transfer small amounts to state divisions voluntarily after failed attempts to reach participants, which is why checking state databases is still worth the five minutes.
Pull the Form 5500 Filing
Every retirement plan with participants files an annual Form 5500 report with the federal government, and those filings are public. The DOL’s EFAST2 system lets you search by employer name or plan name.8Department of Labor. EFAST2 Filing – Welcome Inside the filing, you’ll find the plan administrator and fiduciary along with a financial snapshot of the plan.9U.S. Department of Labor. Form 5500 Series
This is especially useful when a company has changed names. Searching the old name in EFAST2 often pulls up a filing that names whoever currently runs the plan, giving you a live contact. If a plan has been abandoned, the DOL’s separate Abandoned Plan Search identifies the Qualified Termination Administrator handling the wind-down.10Employee Benefits Security Administration. Abandoned Plan Search
Move the Money Without a Tax Hit
Finding the account is the hard part. Getting the balance into a new home without triggering taxes comes down to one distinction: direct rollover versus indirect distribution.
In a direct rollover, the plan sends your money straight to another retirement account, a new employer’s 401(k) or an IRA you designate. No withholding, no deadline. Request this whenever the plan will do it.11Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
In an indirect rollover, the plan cuts a check to you. It withholds 20% for federal taxes off the top. You then have 60 days to deposit the full original amount, including that missing 20%, into another retirement account. You have to come up with the withheld portion from your own pocket to roll the whole balance. If you deposit only what you actually received, the missing 20% is treated as a taxable distribution and can trigger an additional 10% early withdrawal penalty if you’re under 59½.11Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
The IRS can waive the 60-day deadline in narrow circumstances beyond your control, but planning around that waiver is a bad idea. Ask for a direct rollover.
Searching for a Deceased Relative’s 401(k)
The Lost and Found currently only searches accounts tied to your own Social Security number through your own Login.gov account. It can’t search a deceased person’s benefits, though the DOL has said that feature may be added.1U.S. Department of Labor. Retirement Savings Lost and Found Database
For now, contact the deceased person’s former employers directly. If you don’t know where they worked or how to reach them, the DOL’s Employee Benefits Security Administration has benefits advisors who can help, reachable at AskEBSA.dol.gov or 1-866-444-3272.
One boundary worth naming: if what you’re chasing is a traditional pension rather than a 401(k), the Pension Benefit Guaranty Corporation runs its own unclaimed benefits, trusteed plans, and missing participants searches for defined benefit plans. PBGC does not cover 401(k)s or other defined contribution accounts.12Pension Benefit Guaranty Corporation. Your Guaranteed Pension – Single-Employer Plans FAQs