Jackson Koivun’s historic triumph at the 3M Open marked the biggest moment of his young professional career, but the celebrations are expected to come with a significant financial reality. While the American lifted the trophy and secured the winner’s check worth $1.71 million, a substantial portion of those earnings is likely to disappear almost immediately through federal, state, and other applicable taxes.
Based on estimated tax obligations, Koivun could lose nearly $650,000 from his championship earnings, leaving him with considerably less than the headline prize money. Although the exact amount will depend on his final tax filings, deductions, residency, and business expenses, the estimated figure highlights just how much professional athletes often surrender from their biggest paydays.
The victory itself was nothing short of remarkable. Koivun produced four impressive rounds of golf to finish at 15-under-par, holding off a talented field that included Cameron Young, Tommy Fleetwood, Rory McIlroy, Bryson DeChambeau, Scottie Scheffler, and several other established PGA Tour stars.
After opening with rounds of 67 and 68, Koivun surged into contention with a brilliant third-round 64 before closing with a composed 71 on Sunday to seal the victory. His total of 270 strokes proved enough to claim his first PGA Tour title and the largest paycheck of his career.
Winning on the PGA Tour is about far more than just prize money. The victory also comes with valuable FedExCup points, exemptions into future tournaments, and the prestige that accompanies becoming a PGA Tour champion. For a young player still establishing himself among golf’s elite, the success could open doors to significantly larger earning opportunities through sponsorships, endorsement deals, and appearance fees.
However, the headline figure attached to tournament winnings rarely reflects what players actually take home.
Unlike team sports where salaries are often discussed after taxes and deductions, golf prize money is announced as gross earnings. Players are responsible for paying taxes on those winnings, as well as covering numerous expenses associated with competing on tour.
Professional golfers typically pay their caddies a percentage of tournament earnings, with the standard arrangement often being around 10% for a victory. On a winner’s check of $1.71 million, that alone would amount to approximately $171,000 before taxes are even considered.
Beyond caddie payments, players also face expenses including travel, accommodation, coaching, fitness staff, equipment, management fees, accounting services, and other costs required to compete at the highest level throughout the season.
Federal income tax generally represents the largest deduction from tournament winnings, while state taxes may also apply depending on where the event is played and where the player resides. When all applicable obligations are considered, it is not unusual for hundreds of thousands of dollars from a major tournament payday to disappear before the player receives their final net earnings.
Despite those deductions, Koivun’s victory remains career-changing.
The financial rewards extend far beyond a single tournament check. PGA Tour victories often increase a player’s marketability, leading to lucrative sponsorship agreements with equipment manufacturers, apparel brands, financial companies, and other commercial partners. Strong performances can also secure entry into prestigious tournaments that offer even larger prize purses.
For Koivun, the 3M Open may prove to be the beginning of something much bigger.
His composure under pressure, consistent ball-striking, and ability to outperform some of the biggest names in golf demonstrated that he belongs on the PGA Tour stage. Beating a field featuring established stars such as Rory McIlroy, Scottie Scheffler, Bryson DeChambeau, and Tommy Fleetwood is a statement that few first-time winners can make.
While headlines will understandably focus on the fact that Koivun is expected to lose nearly $650,000 of his prize money through taxes and other obligations, the victory has still transformed both his career and financial future.
Even after significant deductions, the 3M Open championship represents a life-changing payday, a breakthrough PGA Tour victory, and the start of what many believe could be a long and successful career at the highest level of professional golf.
