# What Is the MCS-150 Motor Carrier Identification Report?

Canonical: https://www.fastmcs150filing.com/guides/what-is-mcs-150
Category: FMCSA Compliance
Published: 2026-04-24
Updated: 2026-04-24
Read time: 6 min read

> The MCS-150 is the FMCSA form every USDOT-registered carrier files every 24 months. Learn what it is, who files it, and why skipping it revokes your authority.

## TL;DR

> The MCS-150 is the FMCSA Motor Carrier Identification Report every USDOT holder files every 24 months under 49 CFR Part 390. Skipping it deactivates the USDOT and stops brokers from booking loads.

## Key takeaways

- Every USDOT-registered carrier, broker, and freight forwarder files MCS-150 every 24 months under 49 CFR Part 390.
- Due dates are derived from the last two digits of the USDOT — the last digit sets the month, the second-to-last sets even or odd year.
- Out-of-cycle MCS-150 updates are required within 30 days of an address, fleet, name, or operation-type change.
- A missed MCS-150 flips the USDOT to INACTIVE on SAFER within 30-45 days and exposes the carrier to penalties under 49 CFR Part 390.
- FastMCS150 charges $100 standard or $200 once for lifetime updates that cover every future biennial filing.

## FAQ

### What is the MCS-150?

The MCS-150 is the Motor Carrier Identification Report — the FMCSA form every USDOT-registered motor carrier, broker, and freight forwarder must file every 24 months under 49 CFR Part 390. It keeps the FMCSA's record of your business address, fleet, mileage, and operation type current so your USDOT number stays active.

### Is the MCS-150 the same as the biennial update?

Yes — "MCS-150 update" and "biennial update" refer to the same filing. "Biennial" describes the 24-month cadence; "MCS-150" is the form number. Some carriers also call it a "USDOT update" because it refreshes the underlying USDOT record.

### How often do I need to file MCS-150?

Every 24 months on a schedule keyed to the last two digits of your USDOT number. An out-of-cycle MCS-150 is also required within 30 days of any material change — new address, fleet size shift, or change in operation type (interstate vs intrastate).

### Does the MCS-150 cost anything?

The FMCSA charges no government fee to file MCS-150. FastMCS150 charges $100 standard for a single filing submitted the same business day, or $200 once for lifetime updates covering every future biennial filing — plus $25 only if you need Login.gov or PIN recovery help.

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