How do I find my MCS-150 PIN?
Request your FMCSA-issued USDOT PIN through SAFER at safer.fmcsa.dot.gov - FMCSA sends it to the email or cell phone on file, or mails it to the registered business address (7-14 business days) if neither is current. You only need the PIN to verify control of the record; sign-in now runs through Login.gov at motus.dot.gov.
The PIN is paired with the USDOT number and authenticates the carrier to legacy FMCSA systems. It was used once during account setup, and FMCSA's new Motus registration system (motus.dot.gov, live since May 2026, with a Login.gov sign-in) removes the need for USDOT PINs entirely.
To recover a lost PIN, request it through SAFER at safer.fmcsa.dot.gov. FMCSA sends the PIN to the email address or cell phone currently on file; the fallback when neither is current is a letter mailed to the registered business address, which takes 7-14 business days. For carriers who have moved since the original USDOT issuance, that letter may be going to the old address.
The chicken-and-egg fix: file an MCS-150 to update the business address and contact details first (a commercial filing service can do this without your PIN), then request the PIN, which now routes to the updated contacts.
For one-off filings, most carriers find it faster to file through a commercial filing service with FMCSA filing access - the service files MCS-150 on your behalf and you never need the PIN.