Free tool
When is your MCS-150 due?
Your biennial update deadline is not assigned to you — it is encoded in your USDOT number. Enter the number and get the exact date.
Two things carriers get wrong
Nothing changed is not an exemption. The biennial update is required whether or not your address, fleet size or operation changed. Filing nothing is not the same as reporting no change.
The MCS-150 is not UCR. They are separate filings with separate deadlines. The MCS-150 is free and biennial. UCR is annual, carries a fee based on fleet size, and is due by December 31.
Common questions
What is the MCS-150?
The MCS-150 is the Motor Carrier Identification Report. Every carrier with a USDOT number must file it at least once every two years to keep its registration active, even if nothing about the operation has changed.
How do I know when my MCS-150 is due?
The deadline comes from your USDOT number itself. The last digit sets the month — 1 is January through 9 is September, and 0 is October. The next-to-last digit sets the year: odd means odd-numbered years, even means even-numbered years. It is due by the last day of that month.
How long is an MCS-150 good for?
Two years. It is a biennial filing, which is why it is easy to forget — the gap between filings is longer than most people's memory for paperwork.
Is the MCS-150 required if nothing changed?
Yes. The biennial update is required regardless of whether your fleet, address or operation changed. Filing nothing is not the same as reporting no change.
Does the MCS-150 cost money?
No. Filing the MCS-150 with FMCSA is free. Companies that charge for it are charging for the labour of filing, not a government fee.
Is the MCS-150 the same as UCR?
No. The MCS-150 is a biennial FMCSA identification report and is free. UCR is a separate annual registration with a fee based on fleet size, due by December 31. Both are required for most interstate carriers.
What happens if I miss the MCS-150 deadline?
FMCSA can deactivate your USDOT number, and operating with a deactivated number puts your authority and your insurance filings at risk. It is also a violation that can surface in a compliance review.
We'll remind you before it's due
A two-year deadline is one nobody remembers. DOTCurrent tracks your MCS-150 alongside UCR, medical cards, MVR reviews, Clearinghouse queries and annual inspections, and emails you before each one lapses.
This tool derives the deadline from the published FMCSA rule that ties the biennial update schedule to the USDOT number. It is general information, not legal advice — confirm against your FMCSA record before relying on it.