During the marriage and during the divorce spouses owe a fiduciary duty to one another. This duty is much like being partners in a business. You have a duty to disclose “all material facts and information regarding the existence, characterization and valuation of all assets in which the community has or may have an interest and debts for which the community is or may be liable”, as well as all material facts and information relating to the income and expenses of each party. Moreover, each spouse must “provide equal access to all information, records, and books that pertain to the value and character of those assets and debts, upon request.” Failure to do so may result in substantial sanctions.