The status quo is that every company with operations in CA has to pay the CA corporate income tax based on its CA-derived taxable income. This is true regardles

The status quo is that every company with operations in CA has to pay the CA corporate income tax based on its CA-derived taxable income. This is true regardless of where the company is incorporated. This is also broadly true for every state that collects state corporate income taxes i.e. they use their tax authority to levy tax on business activities conducted within their state.