Cal. Rev. & Tax. Code § 2782

If a replicated tax payment is not returned to the tendering party within 60 days of becoming final, as provided in this chapter, the county shall, in addition to returning the replicated payment as soon as practicable, pay the tendering party interest, if that interest is ten dollars ($10) or more, on the amount of replicated payment at the rate provided in Section 5151. The interest shall be computed for the period beginning 60 days after the replicated payment becomes final to the date the replicated payment is returned to the tendering party.