Okla. Stat. tit. 11, § 11-36-119: Waiver of penalties on delinquent assessments

Whenever the municipal governing body deems it to be in the best

interest of the municipality to waive or cancel any part or portion

of the penalty or penalties belonging to the municipality from

delinquent special assessments, the governing body by resolution may

waive or cancel such part or portion of the penalty or penalties;

except that any penalties which have been set aside by law for the

purpose of paying bonds issued in the respective districts, together

with the interest thereon which has accrued upon any delinquent

special assessment or installment thereof, or for the purpose of

securing bonds or warrants for street improvement purposes or

sewers, may not be waived or cancelled by the governing body.