Chloe KennedyA wildcard entry doesn't guarantee anything — except in Dane Sweeny's case. The 24-year-old Australian, ranked well outside the world's top 50, stunned tennis fans on both sides of the Pacific this week when he defeated Lorenzo Musetti, the Italian world number 14, in the third round of the 2026 US Open. With Alex de Minaur falling in the second round to Botic van de Zandschulp, Sweeny now carries Australia's lone men's flag at Flushing Meadows — and has already secured prize earnings that most Australian club players could never dream of. The question that follows every breakthrough of this kind: how much of that cheque actually lands in a player's pocket?
The Australian Wildcard Who Just Rewrote the Script
Sweeny entered the 2026 US Open on a reciprocal wildcard granted by the USTA, effectively a courtesy invite that bypassed the normal qualifying process. Wildcards are high-risk, high-reward bets — they offer a player a chance at a major payday but come with no guarantees beyond the first round.
What Sweeny has done at Arthur Ashe Stadium is nothing short of remarkable. His victory over Musetti — the final score reading 3-6, 6-1, 6-2, 6-2 — was no fluke. It required tactical discipline, physical endurance across four sets, and a mental composure that top-20 opponents rarely allow wildcards to display. By the time the final ball landed, Sweeny had not only secured his place in the Round of 16 but had put himself on the radar of Australian tennis fans in a way that qualifying-round victories rarely achieve.
De Minaur's early exit makes Sweeny's run all the more significant. Australia's world number one fell 6-4, 7-5, 6-2 to Dutch world number 70 Botic van de Zandschulp — an upset that hurt far more than the scoreline. Sweeny is now the last Australian man standing, a wildcard shouldering an entire nation's Grand Slam hope.
The Record $108 Million Purse and What Each Round Pays
The 2026 US Open boasts the largest prize pool in Grand Slam history: USD $108,000,000 — a 19% increase on last year. The tournament maintains gender pay equity across all rounds, with identical payouts for men's and women's singles. For Australian players and their families watching from home, the round-by-round breakdown reveals the scale of what is at stake:
- First round (R128): USD $140,000
- Second round (R64): USD $190,000
- Third round (R32): USD $290,000
- Round of 16 (R4): USD $480,000
- Quarterfinals: USD $780,000
- Semifinals: USD $1,450,000
- Runner-up: USD $2,800,000
- Champion: USD $5,500,000
Sweeny's Musetti scalp means he progressed to the Round of 16, guaranteeing at least USD $480,000. That is an extraordinary windfall for a player entering on a wildcard. But the word "guaranteed" in professional tennis is always qualified: what is guaranteed at the net is not necessarily what arrives in the bank.
As detailed in our earlier analysis of Grand Slam prize money and wealth planning for Australians, the journey from tournament win to after-tax income involves layers of complexity that catch many players off guard.
The ATO's View on Foreign Prize Money
This is where the financial picture for Australian tennis players becomes far more complex than the simple dollar figures suggest. As Australian tax residents, professional players like Sweeny are subject to one of the ATO's foundational principles: worldwide income is taxable income, regardless of where it was earned, in what currency it was paid, or under what flag the tournament was held.
The US-Australia tax treaty provides some protection. American event organisers are required to withhold tax on prize money paid to non-US residents, but under the bilateral treaty, Australian residents benefit from a reduced withholding rate — typically 10% at source rather than the 30% that would otherwise apply to non-resident entertainers and athletes. On a USD $480,000 Round of 16 payout, that translates to approximately USD $48,000 withheld before a dollar crosses the Pacific.
The remaining balance arrives in Australia — but the ATO does not simply take the difference. It taxes the full foreign income on a gross basis and allows a Foreign Income Tax Offset (FITO) to prevent pure double taxation. The FITO lets you claim a credit for tax already paid overseas, up to the limit of the Australian tax payable on that foreign income. According to the ATO's guidance on professional sportsperson income, prize money is assessable income regardless of whether the competition was held onshore or offshore. The result: you will never end up paying less than Australia's top marginal rate on combined income, even if you have already handed a slice to the IRS.
Running the Numbers: What Sweeny's Round of 16 Pay Cheque Actually Looks Like
Take the concrete scenario of an Australian wildcard who reaches the US Open Round of 16 and earns USD $480,000 in September 2026. The calculation is instructive — and sobering.
Step 1 — Currency conversion. At the current AUD/USD exchange rate of approximately 0.63, USD $480,000 converts to roughly AUD $762,000. This is the income figure the ATO assesses for Australian tax purposes.
Step 2 — US withholding tax (treaty rate, 10%). USD $48,000 (approximately AUD $76,000) is withheld by the tournament organiser and remitted to the IRS before the player sees a cent.
Step 3 — Australian income tax. Assuming the player has minimal other Australian-sourced income — a realistic assumption for a wildcard ranked outside the top 50 — the full AUD $762,000 is stacked against Australia's marginal rate schedule. Income above AUD $190,000 attracts 47% (45% base rate plus 2% Medicare Levy). On approximately AUD $572,000 above that threshold, the gross Australian tax bill reaches approximately AUD $269,000.
Step 4 — The FITO offset. The AUD $76,000 already paid to the IRS reduces the ATO liability dollar-for-dollar, leaving a residual Australian payment of approximately AUD $193,000.
Net position: AUD $762,000 earned → AUD $76,000 paid to the US + AUD $193,000 paid to the ATO = total tax burden of AUD $269,000. Net after-tax receipt: approximately AUD $493,000.
If the player had structured their earnings through a legitimate sporting entity — a company or professional athlete trust — the effective rate on income above the corporate tax threshold could be meaningfully lower. But that structure must be in place before the prize money is won, not after it lands.
What Amateur and Semi-Professional Australian Players Need to Know
Sweeny's story is the dramatic tip of a much broader iceberg. Every year, thousands of Australians compete in international tennis circuits — from ITF Futures and Challenger events in the US and Europe, to junior Grand Slams — and earn prize money that many never formally declare to the ATO.
The rules are unambiguous: there is no minimum threshold below which foreign-earned prize money becomes non-taxable. If you earned USD $2,500 winning a Futures event in California, the ATO expects the AUD equivalent in your next tax return, a FITO claim for any US withholding applied, and documentation of deductible expenses — travel, equipment, coaching, tournament entry fees.
The classification of your activity also matters significantly:
- Professional athlete (deriving income from sport as a business): All prize money and endorsement income is assessable; a wide range of deductions are available, and corporate structures may offer tax efficiencies.
- Amateur player (sport treated as a hobby): Prize money may still be assessable if it is regular or expected income. The hobby classification provides far less protection than most players assume.
The ATO applies its own tests to determine which category you fall into — and a series of international tournament entries, even at a low level, can shift you from hobby to business status in the ATO's eyes, with consequences for both your obligations and your entitlements.
Steps to Take Before the Prize Money Lands
For Australian tennis players — whether they are Sweeny-level wildcards or weekend competitors moonlighting on an ITF Futures circuit — the time to seek professional advice is before the tournament draw, not after the cheque clears.
A wealth management expert with experience in professional athlete income can advise on:
- Whether a corporate trustee model suits your tournament schedule and income level
- How to apply the US-Australia tax treaty correctly, including documentation requirements for reduced withholding
- The timing of currency conversions and their impact on which financial year the income is assessed in
- The interaction between prize money, appearance fees, and sponsorship income in determining your marginal rate position
- How to legitimately claim deductions that reduce your assessable income without triggering an ATO audit
Sweeny's wildcard run is a reminder that professional tennis rewards those brave enough to take on the odds. The ATO does not offer wildcards — it expects every dollar earned, in every country, to be properly accounted for in the year it is won.
This article is general in nature and does not constitute financial or tax advice. For guidance tailored to your individual circumstances, consult a qualified wealth management or tax adviser.
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