---
title: "What is MCS-150?"
description: "The Motor Carrier Identification Report used to register and update a USDOT number."
canonical: https://mydotcheck.com/glossary/mcs-150
last_updated: 2026-10-21
---

# What is MCS-150?

The Motor Carrier Identification Report used to register and update a USDOT number.

The MCS-150 records a carrier's name, address, operation type, cargo, power units, drivers and annual mileage. It is filed to get a USDOT number and must be updated every 24 months on a schedule set by the USDOT number.

Missing the biennial update can get the USDOT number deactivated and carries civil penalties.

## Learn more

-   [MCS-150 Update: Due Date, How to File, and Penalties (2026)](/mcs-150-update)
-   [DOT Number Lookup: Check Any Carrier's USDOT Record Free](/dot-number-lookup)

Check your DOT number

---
Canonical URL: https://mydotcheck.com/glossary/mcs-150
Title: What is MCS-150?