Monica Seles and Tom Golisano’s combined net worth in 2026: Inside the billionaire and tennis legend’s wealth, earnings, and investments (Image via Getty)Monica Seles and Tom Golisano have built their wealth in completely different ways. Seles became one of the greatest tennis players in history, while Golisano created a billion-dollar business through Paychex. In 2026, their combined net worth is estimated to be around $5.55 billion, based on the latest estimates from Forbes and Celebrity Net Worth. Most of that wealth comes from Golisano’s business empire, while Seles’ fortune reflects her successful tennis career, endorsements, and investments. Monica Seles’ net worth and career earningsMonica Seles estimated net worth in 2026 is around $50 million, according to Celebrity Net Worth, which is surprising at first glance. During her time on tour she collected nine Grand Slam singles titles and racked up about $14.9 million in WTA prize money. Off the court she still kept earning, with endorsement arrangements with brands like Nike and Fila, plus revenue from her book sales, speaking engagements, television spots, and even real estate investments.CategoryMonica SelesEstimated Net Worth (2026)$50 millionGrand Slam Titles9Career Prize MoneyAbout $14.9 millionMajor EndorsementsNike, Fila and other tennis brandsMain InvestmentsReal estate, books, media work and speaking engagementsTom Golisano’s net worth in 2026Tom Golisano’s wealth is estimated at around $5.5 billion in 2026 by both Forbes and Celebrity Net Worth. He founded Paychex in 1971 with just $3,000, turning it into one of the largest payroll and human resources companies in the United States. His fortune mainly comes from his Paychex stake, long-term investments and dividends. How Monica Seles built her fortuneMost of Seles’ wealth came from tennis. She dominated women’s tennis in the early 1990s before her career was interrupted by the 1993 on-court stabbing in Hamburg. After returning to the sport, she won another Grand Slam and remained one of tennis’ biggest names. Even after retirement, she continued earning through books, television work, public appearances and property investments in the United States. Tom Golisano’s business ventures and investmentsPaychex remains the biggest reason behind Golisano’s fortune. As the company expanded, the value of his ownership grew into billions of dollars. He has also invested in sports, including owning the Buffalo Sabres and Buffalo Bandits, while continuing to support several business ventures. Golisano is also known for his philanthropy, having donated more than $1 billion to healthcare, education and disability-related causes. Lifestyle, cars and watch collectionThe couple keeps a relatively private lifestyle despite their wealth. Golisano owns luxury homes in Florida and has been linked with high-end yachts, but there are no reliable public reports listing his complete car or watch collection. Seles is even more private, and there is no verified information about her luxury cars or watches. Most public reports focus on her charity work and quiet life after tennis rather than expensive possessions. Legacy and life after retirementSeles is remembered as one of the greatest players in women’s tennis history. Her achievements and inspiring comeback continue to make her a respected figure in the sport. Golisano’s legacy is closely tied to Paychex and his charitable work, which has supported hospitals, education and disability programmes across the United States. Even after retirement, both continue to earn from investments while maintaining a low-profile life.