Trailer or semitrailer registration required, fee

301.067. Trailer or semitrailer registration required, fee — optional period fee for certain trailers and semitrailers — permanent registration allowed, procedure — fees for recreational trailers, payable when. — 1. For each trailer or semitrailer there shall be paid an annual fee of seven dollars and* fifty cents, and in addition thereto such permit fee authorized by law against trailers used in combination with tractors operated under the supervision of the highways and transportation commission of the department of transportation. The fees for tractors used in any combination with trailers or semitrailers or both trailers and semitrailers (other than on passenger-carrying trailers or semitrailers) shall be computed on the total gross weight of the vehicles in the combination with load.

2. Any trailer or semitrailer may at the option of the registrant be registered for a period of three years upon payment of a registration fee of twenty-two dollars and fifty cents.

3. Any trailer as defined in section 301.010 or semitrailer may, at the option of the registrant, be registered permanently upon the payment of a registration fee of fifty-two dollars and fifty cents. The permanent plate and registration fee is vehicle specific. The plate and the registration fee paid is nontransferable and nonrefundable, except those covered under the provisions of section 301.442.

4. Beginning August 28, 2019, the annual registration fees imposed under this section or section 301.030 for recreational trailers, as defined under section 301.010, shall be payable in the month of May each year. Any fee that would have been due in December 2019, shall be deferred until May 2020.