The price of his registration depends on the year his car was made, and how many days late he was on his tag.
In Oklahoma it is a dollar a day after expiration, with no limit on the penalty.
Q3: I am late in renewing my registration. How are delinquent registration penalties assessed?
A3: Registration expires on the last day of the month of expiration. If renewing late, the online system will compute delinquent penalties through the date of renewal. Most delinquent registration renewal penalties are computed as follows:
One non-penalty month immediately following the registration expiration month.
Beginning the 1st day of the following month, penalty begins to accrue at $1.00 per day, to a maximum penalty assessment of $100.00 (100 days).