MCS-150 update due date calculator
Motor carriers with a USDOT number update their registration information on the MCS-150 form every 24 months. The pattern for when that update comes due is tied to the digits of the USDOT number.
The rule Permit Book uses
- Month: the last digit of the USDOT number. 1 is January, 2 is February, and so on up to 9 for September. A 0 means October.
- Year: the second-to-last digit. Odd means odd-numbered years, even means even-numbered years.
- Cycle: due at the end of that month, every 24 months.
Try it
This is a reminder aid based on the pattern above, not a filing deadline. Verify your actual due date and requirements with FMCSA before relying on it.
Keep the reminder automatic
Permit Book stores your MCS-150 confirmation with your company documents, computes the due date from your USDOT number and sends a reminder 60 days ahead. You can override the date if FMCSA tells you something different.
Questions
How is the MCS-150 update month worked out from a USDOT number?
The month comes from the last digit of the USDOT number: 1 is January through 9 for September, and 0 is October.
How do I know which year the update falls in?
Look at the second-to-last digit of the USDOT number. An odd digit means the update falls in odd-numbered years, an even digit means even-numbered years. The update then repeats every 24 months.
Is the calculator a filing deadline I can rely on?
No. It applies the pattern as a reminder aid. Verify your actual due date and filing requirements with FMCSA.
Does Permit Book calculate this for me?
Yes. When you enter your USDOT number, Permit Book computes the due date and reminds you ahead of time. You can override the date manually.