When billionaires like Bill Gates give away 'virtually all' their wealth, where does it go?

Microsoft co-founder Bill Gates last month said he plans to give away “virtually all” of his wealth to his and his ex-wife's philanthropic organization, the Bill and Melinda Gates Foundation. The pledge, he said, will knock him off the world’s wealthiest list.

The biggest givers in the nation donated more than $33.4 billion in 2021, according to the Chronicle of Philanthropy, and Forbes estimates that the country's 25 largest donors have given $169 billion over the course of their lives. But when the ultra wealthy give, where do those billions go?

Most of the gifts from large donors last year went to private foundations, according to the Institute for Policy Studies' analysis of the 50 largest donors in 2021. And the second-largest chunk went to donor-advised funds.

Private foundations are required to give away 5% of their endowment a year, while donor-advised funds have no mandated payout. One criticism of donor-advised funds is that the money can sit there for years before being used, though that's not typically the case, said David Campbell, a professor of public administration at Binghamton University.

Gates pledged to give $20 billion to his foundation's endowment last month, with the goal to allow the organization to be positioned to spend $9 billion per year by 2026.

"The funds will enable the foundation to deepen and accelerate existing programs and provide operational flexibility," the foundation said in an email. "The pandemic has proven that progress is fragile, and our ability to commit additional resources will increase the reach and impact of our programs."

But Chuck Collins, director of the Charity Reform Project at the Institute for Policy Studies, said donations to private foundations and donor-advised funds stay under the control of the donor and come with generous tax benefits.

"Bill Gates is saying he’s going to give $20 billion, but his intention is to pay down quickly, not have it sit forever in his foundation," Collins said. "But typically, people think of foundations as a sort of multigenerational affair. ... Essentially, wealthy people opt out of paying their taxes, reduce their taxes, and create an intermediary that they continue to control."

Philanthropist and author MacKenzie Scott has distinguished herself from her peers by granting money directly to charities with no strings attached. Since pledging to give away most of her wealth in 2019, she has donated an estimated $12 billion to more than 1,200 nonprofit organizations.

Scott is among the billionaires who have signed on to the Giving Pledge, an initiative created by Gates, French Gates and Warren Buffett to encourage ultra-wealthy people to donate most of their wealth to charity. As of December, 231 philanthropists from 28 countries have signed the pledge.