Cal. Code Regs. tit. 18, § 17952
(c) Intangible personal property has a business situs in this State if it is employed as capital in this State or the possession and control of the property has been localized in connection with a business, trade or profession in this State so that its substantial use and value attach to and become an asset of the business, trade or profession in this State. For example, if a nonresident pledges stocks, bonds or other intangible personal property in California as security for the payment of indebtedness, taxes, etc., incurred in connection with a business in this State, the property has a business situs here. Again, if a nonresident maintains a branch office here and a bank account on which the agent in charge of the branch office may draw for the payment of expenses in connection with the activities in this State, the bank account has a business situs here.
If intangible personal property of a nonresident has acquired a business situs here, the entire income from the property including gains from the sale thereof, regardless of where the sale is consummated, is income from sources within this State, taxable to the nonresident.
(d) The source of gains and losses from the sale or other disposition of intangible personal property is determined at the time of the sale or disposition of that property. For example, if a California resident sells intangible personal property under the installment method, and subsequently becomes a nonresident, any later recognized gain attributable to any installment payment receipts relating to that sale will be sourced to California (absent a business situs exception). Further, a California nonresident who sells intangible personal property would be taxed by California on gain as it is recognized upon receipt of future installment payments if the intangible personal property had a business situs in California at the time of the sale.
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* This regulation is substantially the same as Title 18, Cal. Adm. Code, Chapter 3, Subchapter 2, Section 17211-14(f).
Note: Authority cited: Section 19503, Revenue and Taxation Code. Reference: Sections 17041 and 17952, Revenue and Taxation Code.
1. Renumbering and amendment of Sections 17951-17954(f) to Section 17952 filed 1-15-82; effective thirtieth day thereafter (Register 82, No. 3).
2. Change without regulatory effect amending subsection (a) and Note filed 12-10-2002 pursuant to section 100, title 1, California Code of Regulations (Register 2002, No. 50).
3. New subsection (d) filed 7-2-2007; operative 8-1-2007 (Register 2007, No. 27).