California Code, Family Code - FAM § 2622

(a) Except as provided in subdivision (b), debts incurred by either spouse after the date of marriage but before the date of separation shall be divided as set forth in Sections 2550 to 2552, inclusive, and Sections 2601 to 2604, inclusive.

(b) To the extent that community debts exceed total community and quasi-community assets, the excess of debt shall be assigned as the court deems just and equitable, taking into account factors such as the parties' relative ability to pay.