- Brazil’s CMN Resolution 5,298 bans prediction market derivatives effective May 4, 2026.
- Kalshi’s January expansion through XP Inc is now blocked before it gained traction.
- The $22B prediction market faces its first major international regulatory defeat.
Brazil just buried a $22 billion expansion before it started. On April 24, 2026, the country’s Conselho Monetario Nacional (CMN) published Resolution 5,298 — and quietly ended one of the most watched fintech stories of the year.
The resolution prohibits financial institutions from offering derivative contracts tied to sports events, political outcomes, elections, social issues, or any theme lacking an “economic-financial reference.” It takes effect May 4. That language is broad enough to kill an entire industry before it arrived.
“Prediction markets are not a haven for using misappropriated confidential or classified information for personal gain,” U.S. Attorney Jay Clayton said just this week in announcing charges against a U.S. soldier who allegedly used classified intel to profit on Polymarket. Brazil’s regulators apparently agree — and they’re not waiting for criminal cases to build.
The $22B Expansion That Just Got Buried
Kalshi — the U.S. prediction market founded by 28-year-old Brazilian-American entrepreneur Luana Lopes Lara — had only entered Brazil in January 2026 through a partnership with XP Inc, the country’s largest brokerage. It was celebrated as landmark international expansion for a company that hit a $22 billion valuation after a $1 billion funding round earlier this year.
Within three months, it is caught in a regulatory snare it apparently did not see coming.
The CMN move follows a familiar pattern in Brazil’s online betting crackdown. The country’s Lei de Apostas (Bets Law), passed in 2023 and implemented in January 2025, authorized sports betting but created a regulatory architecture that authorities are now using to wall off adjacent products. Kalshi’s contracts on election results, sports outcomes, and macro events fit squarely into the new prohibition. The resolution also explicitly targets derivatives offered abroad but marketed to Brazilian residents — closing a common workaround.
Why Brazil Moved Faster Than Washington
Gabriel Galipolo, president of Banco Central do Brasil, framed the decision as consumer protection. Prediction markets, the CMN argued, carry no underlying economic-financial reference — they are speculative instruments dressed up as information products, and their proliferation creates risks the Brazilian financial system is not equipped to manage.
It is a coherent position. And it is not isolated.
President Luiz Inacio Lula da Silva is expected to publish a Presidential Decree in May 2026 further restricting online gambling — including rules blocking recipients of government financial assistance and individuals with outstanding debts from participating. The Bets Law itself is scheduled for a full revision in 2026.
In the U.S., meanwhile, the NFL has independently moved against Kalshi and Polymarket, sending formal letters demanding the removal of contracts on player injuries, officiating decisions, and draft picks. A bipartisan Senate bill introduced in March targets the same grey zone through the Commodity Exchange Act. CFTC Chairman Rostin Behnam has repeatedly warned that prediction markets operating without proper registration face enforcement action.
Brazil just did it faster, and with a broader brush. Kalshi’s window in the world’s sixth-largest economy is closing before most Brazilians even knew it existed.
What This Means for Prediction Markets Globally
The ban has immediate implications for Polymarket, the decentralized prediction market that has become the default platform for crypto-native traders. While Polymarket operates offshore, Resolution 5,298 explicitly prohibits Brazilian institutions from clearing or facilitating payments to offshore derivatives platforms. The_common workaround — using international exchanges to on-ramp funds — is now explicitly illegal for Brazilian residents.
For Kalshi, the timing is particularly brutal. The company built its $22 billion valuation on the premise that regulated prediction markets would expand globally, starting with jurisdictions like Brazil that have already legalized sports betting. Brazil’s reversal suggests that legalizing one form of gambling does not automatically create a path for adjacent products.
The irony is that Brazil’s ban may actually strengthen Kalshi’s U.S. position. Washington regulators watching Brazil’s broad prohibition may conclude that narrower, registration-based frameworks are preferable to outright bans. Kalshi’s U.S. license — granted after a years-long legal battle with the CFTC — becomes more valuable if it proves the company can operate within regulatory boundaries while competitors are shut out entirely.
But for now, Lopes Lara’s homecoming is a regulatory failure, not a triumph. The company she founded to bring prediction markets to the masses just lost access to 215 million potential users.
CMN Resolution 5,298 takes effect on May 4, 2026. The Bets Law revision is scheduled for later this year.