California Code, Business and Professions Code - BPC § 6143

Any licensee, active or inactive, failing to pay any fees, penalties, or costs after they become due, and after two months written notice of his or her delinquency, shall have his or her license suspended.

The licensee may be reinstated upon the payment of accrued fees or costs and such penalties as may be imposed by the board, not exceeding double the amount of delinquent fees, penalties, or costs.