# When Is Your MCS-150 Due? The FMCSA Filing Schedule Explained

Canonical: https://www.fastmcs150filing.com/guides/mcs-150-filing-schedule
Category: FMCSA Compliance
Published: 2026-04-24
Updated: 2026-04-24
Read time: 5 min read

> Your MCS-150 due month and year are set by your USDOT number. Learn the exact FMCSA schedule so you never miss a biennial update deadline.

## TL;DR

> Your MCS-150 due month is the last digit of your USDOT (1=January, 2=February, … 0=October), and the second-to-last digit decides whether you file in even or odd years. The cadence locks for the lifetime of the USDOT.

## Key takeaways

- Last digit of the USDOT = due month: 1 January, 2 February, 3 March, 4 April, 5 May, 6 June, 7 July, 8 August, 9 September, 0 October.
- Second-to-last digit even = even-year filing; odd = odd-year filing.
- Out-of-cycle filings under 49 CFR §390.19 (address, fleet, name change) do not reset the regular biennial schedule.
- FMCSA accepts MCS-150 in the 90 days before the due month — file 30-60 days early to dodge last-minute Login.gov / PIN issues.

## FAQ

### How is the MCS-150 due date calculated?

The FMCSA sets the due date using the last two digits of your USDOT number. The last digit (the "ones" digit) determines the due month: 1=January, 2=February, 3=March, and so on, with 0=October. The second-to-last digit (the "tens" digit) determines whether you file in an even or odd year: even tens-digits file in even years; odd tens-digits file in odd years.

### What month is my MCS-150 due?

Match the last digit of your USDOT to a month: 1 = January, 2 = February, 3 = March, 4 = April, 5 = May, 6 = June, 7 = July, 8 = August, 9 = September, 0 = October. A carrier with USDOT 1234567 files in July (last digit 7).

### Is MCS-150 due every year?

No — every two years. It is called a "biennial" update because the cycle repeats every 24 months. You file in your due month, then again in the same month two years later. Out-of-cycle filings are required for material changes (address, fleet, operation type) but do not reset the regular biennial schedule.

### Do I file in even years or odd years?

That is determined by the second-to-last digit of your USDOT. If it is even (0, 2, 4, 6, 8), you file in even years (2024, 2026, 2028). If it is odd (1, 3, 5, 7, 9), you file in odd years (2025, 2027, 2029). Combined with the month rule above, this gives every USDOT holder a unique 24-month cadence.

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Full article: https://www.fastmcs150filing.com/guides/mcs-150-filing-schedule