Human Interest Bill Gates Donates $20 Billion to Foundation, Plans to Drop from List of World's Wealthiest People “I have an obligation to return my resources to society in ways that have the greatest impact for improving lives,” Bill Gates wrote Wednesday on his blog By Stephanie Wenger Stephanie Wenger Stephanie Wenger is a TV Writer/Reporter at PEOPLE. She joined the brand in 2021 as a digital news writer, covering stories spanning across the site's verticals. She previously contributed E! Online, Hollywood Life and Oscar.com. People Editorial Guidelines Published on July 14, 2022 07:51PM EDT Photo: Hollie Adams/Bloomberg/Getty Bill Gates will no longer be on the list of the world's wealthiest people. On Wednesday, the Microsoft co-founder, 66, announced on Twitter and in a blog post that he plans to transfer $20 billion of his personal wealth into the Bill & Melinda Gates Foundation's endowment this month. The donation by Gates — who established the foundation with ex-wife Melinda French Gates in 2000 — will allow the organization to increase its spending from $6 billion to $9 billion per year by 2026, according to the announcement. Bill Gates Shares Summer Book List — Including Sci-Fi Novel About Gender Equity Daughter Jennifer Suggested "I will move down and eventually off of the list of the world's richest people," Gates shared in his blog post. "My giving this money is not a sacrifice at all. I feel privileged to be involved in tackling these great challenges." He continued, "I believe I have an obligation to return my resources to society in ways that have the greatest impact for improving lives." The additional funds will be used to support the foundation's causes including fighting poverty, diseases and inequity around the world. Bill Gates Admits to 'Mistakes' When Asked if Cheating Contributed to Divorce from Melinda: 'I Caused Pain' Gates also opened up about his financial future in the blog post. "My plan is to give all my wealth to the foundation other than what I spend on myself and my family," he wrote. "I do some giving and investing in U.S. health care issues, including Alzheimer's, outside the foundation. Through Breakthrough Energy, I will continue to invest and give money to address climate change. Overall I expect that the work in these areas will make money, which will also go to the foundation." Never miss a story — sign up for PEOPLE's free weekly newsletter to get the biggest news of the week delivered to your inbox every Friday. Melinda French Gates, Bill Gates. KAMIL ZIHNIOGLU/AFP via Getty Bill Gates Says He Had a 'Great Marriage' to Melinda French Gates: 'I Wouldn't Have Changed It' Gates is currently ranked as the world's fourth-richest person with an estimated $113 billion net worth, according to Bloomberg's Billionaires Index. In 2010, the tech entrepreneur and his ex-wife — who divorced in 2021 — alongside Warren Buffett created The Giving Pledge in which "40 of America's wealthiest people made a commitment to give the majority of their wealth to address some of society's most pressing problems," according to its website.