The fee for a temporary permit issued under subdivision (b) of Section 9102.5 is one-tenth of the annual fees in Division 3 (commencing with Section 4000) of this code and Part 5 (commencing with Section 10701) of Division 2 of the Revenue and Taxation Code, for each calendar month that the vehicle is to be operated in this state. There shall be no proration of fees for any fraction of a calendar month.
Source:
Section 9266.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH§ionNum=9266.5..