Jannik Sinner scored the biggest prize money haul in the history of the ATP Finals after beating Carlos Alcaraz in Sunday night’s final in Turin. But that doesn’t mean he gets to keep all of it.
The Italian star has now won the title in back-to-back years, and in 2025 he did it without losing a single set. His 7-6 (7-4) 7-5 victory over top rival Alcaraz completed a perfect tournament for Sinner, and came after he recently lost the World No.1 ranking to the Spaniard.
Jannik Sinner beat Carlos Alcaraz in the decider at the ATP Finals. Image: Getty
Because Sinner went through without losing a single match, he earned the highest possible prize money on offer. At the ATP Finals, each of the eight players’ prize money is determined on how many matches they win during the round robin, as well as whether they make the final.
All eight players get $331,000 (US) just for making the season-ending tournament, which features only the top-eight players in the ATP rankings. That equates to about $500,000 Australian.
A win in the group stage adds another $600,000 (AU), and a semi-final victory gets each player another $1.8m. The winner of the final gets an additional $3.6m, meaning Sinner walks away with the maximum amount of $7.8m (AU) on offer.
Jannik Sinner and Carlos Alcaraz lose some of their prize money
But a large chunk of it won’t actually end up in his pocket. Sinner will only walk away with about $5.2m because $2.6m will have to be paid in taxes. Italy charges athletes who are non-residents with a withholding tax, and in Sinner’s case it will be about 30 per cent.
Even though Sinner was born in Italy, he’s resided in Monaco since 2020. His move to the municipality was designed to limit the amount of income tax he pays because Monaco is a tax haven for non-French residents. It means Sinner doesn’t have to pay taxes on his earnings where he lives, but he still has to fork out to the government of tournaments where he plays.
For that reason he’s set to give about $2.6m to the Italian government. Alcaraz will likely lose about $1.2m of his $4.2m earned throughout the tournament, but won’t have to pay the Spanish government due to their double taxation treaty with Italy.
The loss of prize money is unlikely to faze the superstars of men’s tennis in the slightest. Sinner has now amassed over $56m (US) in career prize money, but Alcaraz still has slightly more at $57m.
Jannik Sinner and Carlos Alcaraz are streets ahead of their ATP rivals. (Photo by Giampiero Sposito/Getty Images)
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The young guns have established themselves as the leaders of the ATP Tour, and are set to dominate men’s tennis for years to come. Alcaraz has six grand slam titles to his name, while Sinner has four. Alcaraz won the French Open and Wimbledon in 2025, while Sinner won the Australian Open and US Open before taking out the ‘decider’ at the ATP Finals.
Sinner now has 31-straight wins on indoor hard courts, a record that stretches back two years to when he lost the decider to Novak Djokovic at the 2023 edition of the ATP Finals. He’s had a rollercoaster year after serving a three-month ban between the Australian and French Opens for inadvertently doping.
“Celebrating this trophy at the end of the year after such an intense last couple of months, there’s no better ending for the season for me,” said the 24-year-old. “It was a very, very tough and close match-up but I’m very, very happy how I handled the situation and it means the world to me. Against Carlos you have to be at your very best.”