MCS-150 Biennial Update Deadline Calculator

Enter a USDOT number to find when its biennial MCS-150 registration update is due. FMCSA sets the schedule from the last two digits of the USDOT number.

USDOT number

Enter a USDOT number to see its biennial update month.

How it works: the last digit sets the month (1–9 = January–September, 0 = October); the second-to-last digit sets the year (odd → odd years, even → even years).

This tool reproduces FMCSA’s published biennial-update schedule for informational purposes from the USDOT number alone. It is not legal or compliance advice; always confirm your filing status and due date with FMCSA.