(a) All Class I motor carriers of passengers shall complete and file Motor Carrier Annual Report Form MP-1 for Motor Carriers of Passengers (Form MP-1).

(b) Accounting period. (1) Motor Carrier Annual Report Form MP-1 shall be used to file annual selected motor carrier data.

(2) The annual accounting period shall be based either:

(i) On the 31st day of December in each year, or

(ii) An accounting year of 13 4-week periods ending at the close of the last 7 days of each calendar year.

(3) A carrier electing to adopt an accounting year of 13 4-week periods shall file with the FMCSA a statement showing the day on which its accounting year will close. A subsequent change in the accounting period may not be made except by authority of the FMCSA.

(c) Where to file report. The annual report shall be filed on or before March 31 of the year following the year to which it relates. The annual report shall be filed with the Federal Motor Carrier Safety Administration at the address in § 369.6. Blank copies of the report form are available at the Federal Motor Carrier Safety Administration website https://www.fmcsa.dot.gov/registration/form-mp-1-annual-report-form-and-worksheet-class-i-motor-carriers-passengers.