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MCS-150 Filing & Why It Matters

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The MCS-150 is the single most useful date in the FMCSA registry. Every carrier files it every two years — and the date they last filed tells you whether they're actively running, falling behind on paperwork, or quietly shutting down. DOT Lead Scout uses this date in scoring, change signals, and dashboard filters.

What is the MCS-150? #

The MCS-150 (Motor Carrier Identification Report) is the form every carrier files to update their FMCSA registration. Officially called the "Combined Motor Carrier Identification Report and HM Permit Application," it's the way carriers tell FMCSA:
  • Current company info — address, phone, email, DBA, officers
  • Current fleet size — trucks, tractors, trailers, drivers, CDLs
  • Operations — interstate vs. intrastate, cargo types, HAZMAT status
  • Annual mileage — mileage logged in the previous calendar year

The Biennial Filing Schedule #

MCS-150 filings are required every two years. The exact deadline depends on the last digit of the carrier's USDOT number and the second-to-last digit determines the month. The schedule is staggered so FMCSA isn't flooded with filings all at once.
"Stale" in DOT Lead Scout = 700+ days

DOT Lead Scout flags any MCS-150 filing older than 700 days (~23 months) as stale. That's roughly when the biennial deadline has come and gone, and the carrier is officially overdue.

How MCS-150 Date Affects Opportunity Score #

The opportunity score (see 3.5 Quality & Opportunity Scoring) uses the MCS-150 filing date as a major component. Recent filings boost the score; stale filings hurt it:
MCS-150 ageScore impactInterpretation
Less than 6 months+25Very recent — carrier is actively managing compliance
6–12 months+20Recent filing — engaged carrier
12–24 months+15Within biennial window — on schedule
24–36 months+10Slightly stale — mild flag
36+ months+5Old filing but still exists — minimal credit
2+ years stale-15Penalty applied — potentially dormant carrier

Why a Stale MCS-150 Is Such a Strong Signal #

A carrier that hasn't filed an MCS-150 in 700+ days is almost always one of these:
Quietly closed

The most common cause. Carrier shut down operations months ago and didn't bother filing. Eventually their authority will lapse to Inactive.

Dormant but alive

Owner-operator who paused operations for personal reasons. May reactivate — but until they file an MCS-150, they aren't hiring drivers.

Behind on paperwork

Active carrier that just hasn't filed yet. Often a small operation without a dedicated compliance person. Will file eventually — or get deactivated.

Pending update

Filed paperwork is in FMCSA's queue but hasn't propagated yet. Rare — the data sync usually catches this within days.

The MCS-150 Updated Change Signal #

When a carrier's mcs150_date changes — meaning they just filed a fresh MCS-150 — DOT Lead Scout fires the MCS-150 Updated change signal at HIGH priority. Why this matters:
  • The carrier is actively managing compliance
  • They probably just confirmed their fleet size, driver count, and contact info — all the data is fresh
  • If their fleet grew on the new filing, the Adding Drivers or Fleet Tier Up signals fire too
  • They're already in "FMCSA paperwork mode" — mentally primed to also think about driver qualification files
Stack this with Adding Drivers

If a carrier shows MCS-150 Updated and Adding Drivers in the same week, that's the highest-conversion lead type in DOT Lead Scout. They're actively scaling and actively compliance-aware. Open Engage+ dashboard's change-signals widget to find these.

Filtering on MCS-150 Status #

Pipeline lists have an MCS-150 column with a filter that lets you find carriers by filing recency:
  • Date range filter — filter by exact filing date range
  • "Show only overdue (23+ months)" toggle — one-click filter to all stale-MCS-150 carriers
  • Visual indicator — stale dates show with an orange exclamation icon and a tooltip showing exact months overdue

Practical Outreach Use #

If you want active, engaged carriers

Filter to carriers with MCS-150 dates within the last 12 months. These carriers just confirmed they're running operations, and the contact info is fresh.

If you want carriers about to be in compliance trouble

Filter to MCS-150 dates 22-26 months old. They're right at or just past their biennial deadline — perfect moment to introduce yourself before they get an FMCSA notice.

If you want to skip dead leads

Filter out 36+ months. Anything that old without an update is overwhelmingly a closed operation.
Updated on April 29, 2026
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