Cal. Rev. & Tax. Code § 2615

Whenever taxes are paid in cash or whenever a receipt is requested at the time of payment by the person paying the tax, the tax collector shall give a receipt to the person making payment, specifying each of the following:

(a)The amount paid.

(b)The fiscal year and the installment of taxes to which the payment applies.

(c)The description of the property.

The receipt shall be issued without charge.