Section 16352 Of Article 5.1. Allocation Of Receipts During Administration Of Trust: Receipts From Entities From California Probate Code >> Division 9. >> Part 4. >> Chapter 3. >> Article 5.1.

. (a) If a trustee who conducts a business or other activity determines that it is in the best interest of all the beneficiaries to account separately for the business or other activity instead of accounting for it as part of the trust's general accounting records, the trustee may maintain separate accounting records for its transactions, whether or not its assets are segregated from other trust assets.
  (b) A trustee who accounts separately for a business or other activity may determine the extent to which its net cash receipts must be retained for working capital, the acquisition or replacement of fixed assets, and its other reasonably foreseeable needs, and the extent to which the remaining net cash receipts are accounted for as principal or income in the trust's general accounting records. If a trustee sells assets of the business or other activity, other than in the ordinary course of the business or other activity, the trustee shall account for the net amount received as principal in the trust's general accounting records to the extent the trustee determines that the amount received is no longer required in the conduct of the business or other activity.
  (c) Businesses and other activities for which a trustee may maintain separate accounting records include the following:
  (1) Retail, manufacturing, service, and other traditional business activities.
  (2) Farming.
  (3) Raising and selling livestock and other animals.
  (4) Managing rental properties.
  (5) Extracting minerals and other natural resources.
  (6) Timber operations.
  (7) Activities to which Section 16366 applies.