Platforms like Kalshi and Polymarket now face blocks in the country.
The move highlights vulnerabilities as market activity grows. Investors eye B3-listed assets with caution. Regulators act to protect everyday participants from unregulated tools.
Central Bank Targets Unlicensed Platforms
The National Monetary Council approved Resolution No. 5,298 on April 23, 2026, published by the Central Bank on April 24, prohibiting certain prediction market contracts. It prohibits contracts tied to sports, political, cultural, gaming, electoral, and entertainment events. These platforms fail derivatives rules. They pose threats to investor protection and market order.
Finance Minister Fernando Haddad or Central Bank officials announced the measures related to the ban. He spoke at a press conference in Brasília. Authorities blocked access to approximately 27-28 platforms. Telecommunications regulator Anatel acted to block access to the sites by early afternoon on April 24, 2026, following the announcement.
Kalshi and Polymarket led the list. Users bet real money on event outcomes. These range from elections to sports. Regulators see them as illegal betting disguised as finance.
The Central Bank stressed non-compliance with standards. Platforms lack approvals for authorised trading. This exposes users to financial harm.
Investor Protection Drives Swift Action
Brazil prioritises stability over rapid innovation. Unregulated services violate federal betting laws. The government aims to shield retail investors from harm.
Prediction markets gained global traction for crowd-sourced forecasts. Yet Brazil demands local oversight. No legalisation exists for these tools.
Blocks limit mainstream access. VPNs may work for some. But enforcement signals strict monitoring ahead.
Authorities view the platforms as bet-like products. They fall outside gambling and derivatives rules. This ban covers a broad sweep of 28 sites.
Implications for B3 and Capital Raises
Investors in Brazil capital markets integrity now face heightened scrutiny. B3 assets draw closer regulatory eyes. Capital raises may slow without clear rules.
The action sets a precedent for LATAM. It warns global platforms of compliance needs. Stability appeals to institutional buyers.
As enforcement ramps up, firms eye licensed alternatives. Brazil balances growth with safeguards. Investors should track Central Bank updates for B3 stability.
