CA Food & Agric Code Section 79878

(a)

A person who fails to file a return or pay an assessment within the time required by the commission shall pay to the commission a penalty of 10 percent of the amount of the assessment determined to be past due and, in addition, interest on the unpaid balance at the rate of 1.5 percent per month.

(b)

In addition to any other penalty imposed, the commission may require a person who fails to pay an assessment or related charge pursuant to this article to furnish and maintain a surety bond in a form and amount and for a period of time specified by the commission board of directors as assurance that all payments to the commission will be made when due.