How are we going to divide our estate?

California is a community property state, which means that unless you contract for something different (see prenuptial and antenuptial agreements), when you get married, all income, property, and debts are community property and shared equally among the spouses. Assets you bring to a marriage, and any assets acquired through gift or inheritance, are generally considered separate property unless you do something, intentionally or unintentionally, to change that characterization.