the assessed amount by the due date, the county treasurer/tax collector may add to the unpaid assessment an amount not to exceed 10 percent of the unpaid assessment to defray the cost of enforcing the collection of the unpaid assessment. In addition to payment for the cost of enforcing a collection, the assessed business shall pay a penalty equivalent to the lesser of either the maximum amount authorized by Section 1 of Article XV of the California Constitution or 5 percent for each 30 days the assessment is unpaid, prorated over the days unpaid, commencing 30 days after the notice has been given to the assessed business of its failure to pay the assessment on the date required, unless the county treasurer/tax collector determines that the failure to pay is due to reasonable cause beyond the control of the assessed business.

the following amounts:

(A) An amount for necessary expenses.

(B) An amount that shall not exceed 25 percent of the assessment to cover costs that are incurred prior to the receipt of sufficient funds from the assessment.

contributions that are made by assessed businesses. However, if collections from the payment of established assessments are sufficient, the county commission may authorize the repayment of contributions, or authorize the application of the contributions to the assessment obligations of persons who made the contributions.

warrant is canceled. The money so retained, if not claimed within the period of one year, shall be used for administration of the county commission and in furtherance of the Los Angeles County Tourism Marketing Plan.