California Code, Government Code - GOV § 87462

(1) If the loan has a defined date or dates for repayment, when the statute of limitations for filing an action for default has expired.

(2) If the loan has no defined date or dates for repayment, when one year has elapsed from the later of the following:

(1) A loan made to the campaign committee of an elected officer or a candidate for elective office.

(2) A loan that would otherwise not be a gift as defined in this title.

(3) A loan that would otherwise be a gift as set forth under paragraph (a), but on which the creditor has taken reasonable action to collect the balance due.

(4) A loan that would otherwise be a gift as set forth under paragraph (a), but on which the creditor, based on reasonable business considerations, has not undertaken collection action.  Except in a criminal action, a creditor who claims that a loan is not a gift on the basis of this paragraph has the burden of proving that the decision for not taking collection action was based on reasonable business considerations.

(5) A loan made to a debtor who has filed for bankruptcy and the loan is ultimately discharged in bankruptcy.