Contact your former employer’s HR or payroll department
Check old pay stubs, tax forms, and employment records for plan details
Look for account statements, welcome letters, or emails from the 401(k) provider
Search your old email inbox for the plan administrator or recordkeeper name
Use the National Registry of Unclaimed Retirement Benefits
Check the U.S. Department of Labor’s abandoned plan search tools
Contact the 401(k) provider directly if you know the company name
Search for your name in state unclaimed property databases
Review old IRS Form 1099-R or Form 5498 if available
Contact the plan administrator listed on any old retirement documents
Ask your current employer’s benefits office if they can help track prior accounts
Verify whether the old account was rolled over to another IRA or employer plan
Keep your Social Security number, former employer names, and employment dates ready
Request a full account search from the plan provider using your identifying information