Cal. RTC § 34

Whenever an amount of money paid by a person to the state or any of its agencies includes a sum which can be identified as in fact intended as payment of a locally administered tax which should have been paid directly to a city, city and county, county or district within the state, the state or its agency may pay the amount to the local government entitled thereto and notify the payor of its action. This procedure, however, shall not be followed by the state or any of its agencies unless the governing body of the local government concerned has, by resolution, agreed with respect to such payments that a timely payment received by the state or its agency will be regarded as a timely payment to the local government concerned, and that it will process all claims with respect to such payment in the same manner as though the payment had been made to it in the first instance.