Mackenzie Bezos to give away half of her $37 billion in wealth

MacKenzie Bezos with her soon-to-be ex-husband Jeff Bezos.                  Kevork Djansezian  Getty Images

The Giving Pledge is an initiative by Warren Buffett, Bill Gates, and Melinda Gates that encourages the richest people across the world to donate more than half of their wealth to philanthropy and charity.

MacKenzie Bezos, who recently became one of the richest people in the world by divorcing Jeff Bezos, has decided that she will do something that her ex-husband never did: give a considerable fraction of her income to philanthropic causes. But I won't wait.

Bezos celebrated his ex-wife's Giving Pledge announcement in a tweet Tuesday. Notably absent, however, is Jeff Bezos, who has always been criticized for not signing on despite being the richest man in the world. 'Her letter is so lovely.

Those who sign the Giving Pledge make "a moral commitment to give more than half of their wealth to philanthropy or charitable causes", according to the group's website.

Her former husband, whose net worth is roughly $114 billion and leads the global rankings, is notably absent from the list. Soon after, Jeff Bezos' relationship with a former news anchor was made public, sparking headlines and a public battle between the mogul and the National Enquirer and its parent company, American Media Inc.

Jeff Bezos tweeted Tuesday morning that his ex-wife "is going to be awesome and thoughtful and effective at philanthropy".

Mackenzie Bezos, during discussion of pledge shared a quote from The Writing Life by Annie Dillard.

MacKenzie, estimated to be worth $37bn (R536bn), wrote in her pledge that she had a disproportionate amount of money to share, BBC reports.

A total of 19 new members of the Giving Pledge were announced on May 28, including WhatsApp co-founder Brian Acton, Pinterest co-founder Paul Sciarra, and cryptocurrency's derivatives exchange BitMEX founder Ben Delo.

Jeff Bezos, whose fortune is now estimated at well over United States dollars 100 billion, has not taken the pledge but in September announced a USD 2 billion investment fund meant to support homeless families and education in poor communities.

In addition to having a supportive partner, Jeff Bezos built Amazon on the backs of taxpayers and exploited laborers. Richard and Joan Branson, Michael Bloomberg, Joe and Kelly Craft, Dave Goldberg and Sheryl Sandberg, Bob and Renee Parsons, David Rockefeller, Sanford and Joan Weill, Mark Zuckerberg and Priscilla Chan are among those who have pledged at least half their fortune to the effort.