Okla. Stat. tit. 68, § 68-2913

taxes - Collection of taxes.

A. All taxes levied upon an ad valorem basis for each fiscal

year shall become due and payable on the first day of November.

Except for mortgage servicers, the exclusive method for payment

shall be as follows:

1. Unless one-half (1/2) or more of the taxes so levied has

been paid before the first day of January, the entire tax levy for

such fiscal year shall become delinquent on that date.

2. If the first half or more of the taxes levied upon an ad

valorem basis for any such fiscal year has been paid before the

first day of January, the remainder shall be paid before the first

day of April thereafter and if not paid shall become delinquent on

that date.

In no event may payment be made in more than two installments

subject to the provisions of the payment schedule specified in this

subsection.

Oklahoma Statutes - Title 68. Revenue and Taxation Page 1275

B. Mortgage servicers, as defined in 24 C.F.R., part 3500.17,

shall pay all accounts which they are servicing in one annual

payment before the first day of January or the entire tax levy for

such fiscal year shall become delinquent on that date.

C. If the total tax owed is Twenty-five Dollars ($25.00) or

less, then the total amount must be paid before January 1. If the

total tax is not paid before January 1, the unpaid balance owing

shall become delinquent on the first day of January and shall be

subject to delinquent charges as provided for in this section.

D. All delinquent taxes shall bear interest at the rate of one

and one-half percent (1 1/2%) per month or major fraction thereof

until paid. In no event shall such interest exceed a sum equal to

the unpaid principal amount of tax, and when such interest has

accumulated to a sum equivalent to one hundred percent (100%) of the

unpaid tax the further accumulation of interest shall cease.

E. In addition to any other penalties prescribed by law,

delinquent taxes shall be subject to a late payment penalty of five

percent (5%) per month or a major fraction thereof until paid. The

penalty assessed herein shall only apply to delinquent taxes that

are due on property located in a dependent school district in a

county with a population of less than seventy-five thousand (75,000)

according to the most recent Federal Decennial Census and held by a

nonindividual taxpayer when the tax has been paid delinquent for two

(2) or more separate and consecutive years and the fair cash value

of the property exceeds Five Hundred Thousand Dollars ($500,000.00).

F. The county treasurer shall stamp the date of receipt on each

letter received containing funds for payment of taxes and no

interest shall be added or charged after the receipt of such letter

or the amount due. It shall be the duty of every person subject to

taxation according to the law to attend the county treasurer's

office and pay his or her taxes. If any person neglects to pay his

or her taxes until after they have become delinquent, the county

treasurer is directed and required to collect the delinquent tax as

provided for by law. The first installment of taxes payable

pursuant to the provisions of this section shall not become

delinquent until thirty (30) days after the tax rolls have become

completed and filed by the county assessor with the county

treasurer.

G. The county treasurer may waive penalties or interest in any

case where it is shown to the county treasurer that such penalties

or interest were incurred through no fault of the taxpayer. Each

waiver of penalties or interest shall be audited by the Office of

the State Auditor and Inspector each year during the annual audit of

the county offices.