California Code, Revenue and Taxation Code - RTC § 19149

(a) Notwithstanding any other provision of Sections 19142 to 19151, inclusive, if the amount of estimated tax due and payable under Section 19025 is only the minimum franchise tax imposed by Section 23153and, if applicable, the tax of a wholly owned subsidiary under Section 23800.5, then the addition to the tax with respect to any underpayment of any installment imposed by Section 19142 shall be calculated only on the basis of the amount of the minimum franchise tax and the amount of the tax of each wholly owned subsidiary.

(b) This section shall not apply to a large corporation as defined in subdivision (b) of Section 19147.