The three structures
Cross-purchase: each owner buys life insurance on every other owner. On a death, surviving owners use the proceeds to buy the deceased's interest directly. Best for businesses with 2 to 3 owners; the number of policies grows quickly with more owners.
Redemption (entity purchase): the business owns the policy and buys out the deceased's interest. Simpler to administer with multiple owners, but §101(j) compliance is required, and the surviving owners don't get a basis step-up in the redeemed equity.
Wait-and-see: the agreement allows the entity to act first; if it doesn't (typically within a defined window), the cross-purchase mechanic kicks in. Provides flexibility to handle the most tax-efficient route at the actual moment.