Naomi Osaka is worth an estimated $45 million in 2026, and she is climbing again.

The former world No. 1 heads into the North American hard-court swing ranked inside the top 15, seeded 13th at the Cincinnati Open and chasing momentum before the US Open begins later this month. It is the New York major where she first became a star — and where a third title would reset her earning power all over again. Most trackers put her fortune between $40 million and $50 million, a range that reflects how much of her wealth sits in endorsements rather than tournament checks.

Where Does Naomi Osaka’s Money Actually Come From?

Osaka has earned more than $25 million in career prize money on the WTA Tour, according to official tour figures. That is a substantial sum — but it is dwarfed by what she makes off the court.

At her commercial peak, Osaka pulled in the majority of her income from sponsorships. Her deal with Nike, reportedly worth around $10 million a year, has long been her most lucrative, and she has partnered with brands including Louis Vuitton, Maybelline and Nissan. That endorsement portfolio is what separates her from most of the tour: even world No. 1 Aryna Sabalenka, who out-earns nearly everyone in prize money, trails the marketing pull that Osaka built at her height. It is the same endorsement-first model that has powered Caitlin Clark’s off-court empire in American basketball.

How Naomi Osaka Built Her Fortune

Osaka announced herself in September 2018, beating Serena Williams in the US Open final for her first major at age 20. She followed it with the 2019 Australian Open, the 2020 US Open and the 2021 Australian Open — four Grand Slam singles titles in three years, plus a 25-week stint as world No. 1 that made her the first Asian player to top the singles rankings.

The trophies turned into money fast. Forbes named her the highest-paid female athlete in 2020, with earnings around $37.4 million, then again in 2021, when her total climbed close to $57 million — at the time, the biggest single-year haul ever recorded by a female athlete. Even against the world’s highest-paid athletes, a list dominated by soccer and basketball stars, Osaka’s endorsement income stood out for a tennis player.

Then she stepped away. Osaka gave birth to her daughter, Shai, in July 2023 and took a 15-month break from the tour before returning in January 2024. The comeback has been gradual, but the brand endured — sponsors stayed, and the story of a mother chasing a fifth major has only added to her marketability.

What’s Next for Naomi Osaka’s Net Worth in 2026

The 28-year-old is trending in the right direction. After reaching a WTA 1000 final during last year’s Canadian Open swing and climbing back toward the top 10, Osaka arrives in New York as a genuine contender rather than a returning name. A deep US Open run — on the court where she has already won twice — would sharpen her ranking, her prize money and, most of all, her endorsement value heading into 2027.

For now, an estimated $45 million net worth understates the real story: Osaka is one of the few athletes whose earning power barely dipped through two years away from the game. If the comeback peaks at Flushing Meadows this month, the number tracking her fortune is likely to start moving up.

Where do you think Osaka finishes the year — back in the top five, or still building? Tell us in the comments.