Four Reasons the Facebook Fortune Is Going Into an LLC

The decision by Mark Zuckerberg and his wife, Priscilla Chan, to gradually give away 99 percent of their Facebook fortune is big news not just for the huge sum involved—about $46 billion—but for how the couple chose to achieve their philanthropic goal. Rather than set up a private foundation or charitable trust as Bill and Melinda Gates did, the Chan Zuckerberg Initiative will be structured as a limited liability company.

It's a highly unusual step for a massive philanthropy. "I've never seen someone set up an LLC exclusively for a philanthropic purpose before," says Jane Wales, vice president of philanthropy and society at the Aspen Institute. "Normally they set up a foundation for the tax advantages of doing so." Here are some significant ways that LLC status will shape what Zuckerberg and Chan do with their wealth.