Okla. Stat. tit. 47, § 47-1116v1: Registration periods

A. Twelve registration periods shall be established for

vehicles required to be registered on a staggered basis. The

registration periods shall start on the first day of each calendar

month and shall end on the last day of that month. Unless otherwise

provided, all such vehicles where the date of execution of transfer

of ownership occurs in this state at any time during a calendar

month shall be subject to registration and payment of the fee for

the registration period commencing the first day of the month of

such date of execution of transfer.

B. 1. A person who registers more than one vehicle may have

all of such vehicles initially registered at the same time or at

separate times. Any person who obtains a vehicle may, upon

registration, have the registration period adjusted to allow future

registration of all such vehicles at the same period or at a

different period.

2. Upon the payment of a five-dollar one-time convenience fee,

any two or more noncommercial vehicles owned by the same person and

previously registered in this state may be registered at the same

time regardless of the month or months in which the vehicles were

previously registered. The month in which the noncommercial

vehicles are newly registered shall be the month in which the

registration is renewed annually. If a noncommercial vehicle is

registered pursuant to this subsection in the same calendar year in

which it was previously registered, license and registration fees

shall be prorated to account for the difference between the previous

renewal month and the new renewal month and those fees shall be due

at the time of registration pursuant to this subsection. Of the

monies collected pursuant to the convenience fee created by this

paragraph, Two Dollars and fifty cents ($2.50) shall be deposited to

the credit of the Oklahoma Tax Commission Fund created pursuant to

Section 221 of Title 62 of the Oklahoma Statutes and Two Dollars and

fifty cents ($2.50) shall be retained by the motor license agent.

C. If a special or personalized license plate is issued

pursuant to Sections 1135.1 through 1135.7 of this title, any

registration fee required for such plate and the fee required

pursuant to subsection A of Section 1132 of this title shall be

remitted at the same time and subject to a single registration

period. The Oklahoma Tax Commission shall promulgate rules

establishing a method for making required fee adjustments when a

special or personalized license plate is obtained during a twelve-

month period for which a registration fee has already been remitted

pursuant to this subsection. The combination of fees in a single

remittance shall not alter the apportionment otherwise provided for

by law.