Prediction markets processed $26 billion in monthly volume in March 2026 — a 2,000% increase from $1.2 billion in early 2025. In the same period, 33 jurisdictions have blocked or restricted access to Polymarket, the largest crypto-native prediction platform. Indonesia became the latest country to...
"Using crypto or blockchain doesn't change platforms that let users wager on uncertain outcomes from being gambling products." — Indonesia Ministry of Communication and Digital Affairs, May 2026
Prediction markets processed $26 billion in monthly volume in March 2026 — a 2,000% increase from $1.2 billion in early 2025. In the same period, 33 jurisdictions have blocked or restricted access to Polymarket, the largest crypto-native prediction platform. Indonesia became the latest country to impose a nationwide block on May 25, joining India (May 21), Brazil (April 24), and the Netherlands (February 20) in a regulatory wave that shows no signs of slowing.
The core tension: a sector that Bernstein projects will reach $1 trillion in annual volume by 2030 is being simultaneously embraced under federal regulation in the United States and classified as illegal gambling across much of the rest of the world. In the U.S., the battle has fractured further — the CFTC claims sole federal jurisdiction, while Nevada, Tennessee, and other states argue prediction markets fall under state gaming law. The industry's rapid growth has outpaced the regulatory frameworks designed to contain it.
The prediction market sector's growth curve has been near-vertical. According to TRM Labs, total notional trading volume reached approximately $64 billion in 2025, up more than 400% from 2024. The trajectory accelerated in 2026:
Two platforms dominate. Polymarket and Kalshi together account for 85-90% of total global volume, according to Gambling Insider data. Kalshi now controls approximately 89% of the U.S. prediction market, according to CoinDesk reporting from April 2026, having benefited from its CFTC-regulated status while Polymarket faced restrictions.
Bernstein analyst Gautam Chhugani projects total market volumes will reach $240 billion in 2026 — a 370% increase over the prior year. The firm's longer-term estimate: $1 trillion in annual volume by 2030 at a compound annual growth rate of roughly 80%.
The immediate catalyst for Indonesia's May 25 block was a Polymarket contract launched on May 21 that allowed users to bet on whether President Prabowo Subianto would leave office before his term ends in October 2029. The contract traded more than $46,000 in volume across three exit-date contracts: May 31, June 30, and December 31, 2026. The bet circulated widely on Indonesian social media, according to The Jakarta Post.
Indonesia's Ministry of Communication and Digital Affairs (Komdigi) classified Polymarket as an "online gambling site disguised as a prediction market" and ordered internet service providers to block the domain. The decision was made under existing national gambling law — gambling is illegal in Indonesia under both secular law and the country's interpretation of Islamic legal principles, which influence policy in the Muslim-majority nation.
The volume on the triggering contract was trivial — $46,000 is a rounding error against Polymarket's billions in monthly throughput. But the political sensitivity was not. Since taking office in October 2024, the Prabowo administration has blocked approximately 3.4 million websites classified as facilitating gambling, according to Komdigi data. Polymarket became one more.
Indonesia's action is not isolated. Across 33 jurisdictions, regulators have applied some form of restriction to Polymarket. The enforcement acceleration in 2026 has been notable:
India (May 21, 2026): The Ministry of Electronics and Information Technology issued a formal ISP-level blocking order against Polymarket under the "Promotion and Regulation of Online Gaming Rules" (PROGA), which took effect May 1, 2026 and imposes a blanket ban on "online money games." A separate order targeting Kalshi followed.
Brazil (April 24, 2026): Finance Minister Dario Durigan announced the blocking of 27 prediction market platforms, including both Polymarket and Kalshi. Telecoms regulator Anatel executed the blocks the same day. Brazil's National Monetary Council also issued a rule confining derivatives to financial benchmarks — interest rates, exchange rates — and explicitly excluding contracts tied to politics, elections, sports, and social outcomes.
The Netherlands (February 17, 2026): The Dutch gambling authority Kansspelautoriteit (KSA) imposed a penalty order on Polymarket's operator, Adventure One QSS Inc., threatening fines of €420,000 per week, up to a maximum of €840,000, for offering unlicensed games of chance. The KSA cited "social risks," including "the potential influence on elections." Polymarket blocked Dutch users on February 20.
Europe broadly: France, Belgium, Portugal, Hungary, Romania, and Poland have all restricted or banned the platform. Poland allows users to close existing positions but not open new ones.
Ukraine: Blocked due to unauthorized wagering on sensitive national military outcomes.
The pattern across jurisdictions is consistent: regulators classify prediction markets as gambling, not as financial instruments or information markets, and apply existing gaming law. No jurisdiction that has taken enforcement action has created a new regulatory category for the sector.
The United States presents a more complex picture. Polymarket officially relaunched its U.S. platform in December 2025 as a CFTC-regulated entity, operating through its acquisition of QCEX and an Amended Order of Designation from the commission. Kalshi has operated under CFTC oversight since receiving approval in November 2020.
But federal authorization has not prevented state-level challenges:
Nevada (January 2026): The Nevada Gaming Control Board filed a civil complaint against Polymarket, seeking to prevent the platform from offering event contracts without a state gaming license. Judge Jason Woodbury granted a temporary restraining order on January 29, ruling that the NGCB was "reasonably likely to prevail on the merits."
Tennessee: The state's sports betting regulator issued shutdown orders against Polymarket in the same week.
The CFTC's response was pointed. An agency official told The Wall Street Journal: "The CFTC will no longer remain passive while aggressive state governments undermine the agency's sole authority over these markets." The federal-state jurisdictional conflict remains unresolved.
As CNN reported in April 2026, the agency policing prediction markets has been simultaneously shrinking — budget cuts and staffing reductions have reduced the CFTC's enforcement capacity even as the sector it oversees has grown exponentially.
The industry's regulatory exposure is concentrated in one category. According to CNBC reporting, sports contracts account for almost 90% of bets made on Kalshi in the year ending in February 2026. Sports was also the leading category in Q1 2026 Polymarket volume, generating $10.1 billion.
This is the core vulnerability. State gaming regulators view sports prediction markets as functionally identical to sportsbooks — which are regulated at the state level under the 2018 Supreme Court decision in Murphy v. NCAA. The industry's argument that event contracts are financial instruments, not wagers, becomes harder to sustain when the overwhelming majority of volume is in sports outcomes.
CFTC Chair Michael Selig testified before the House Agriculture Committee that prediction markets and sports betting are "two separate things." Democratic Congressman Gabe Vasquez of New Mexico pressed Selig on the distinction, questioning whether the difference was substantive or semantic.
Congressional Democrats have escalated pressure. In late April 2026, a group led by Senator Jeff Merkley of Oregon sent a letter to the CFTC requesting the agency:
Separately, Representative Nikki Budzinski of Illinois proposed a bipartisan bill to ban executive branch political appointees, the president, lawmakers, their families, and others from betting on government actions through prediction platforms. At least two additional Democratic lawmakers have co-sponsored the legislation since CFTC Chair Selig's congressional testimony.
Industry lobby groups, including the American Gaming Association, have testified before Congress that the CFTC is "in over its head" on prediction market oversight, according to The Washington Times. They argue the agency lacks the institutional expertise and resources to regulate what is functionally a gambling market.
The prediction market sector presents a clear case study in the tension between economic value creation and regulatory classification. The platforms generate measurable utility: price discovery on real-world events, hedging for businesses exposed to political and regulatory risk, and an alternative to polling for forecasting outcomes. Academic literature, most notably work from the University of Iowa's Iowa Electronic Markets, has demonstrated the forecasting accuracy of these instruments for decades.
However, the economic value argument has not prevented regulatory classification as gambling in any jurisdiction outside the United States. The sector's revenue model — take rates on trading volume — is economically indistinguishable from a betting exchange's commission structure. When 90% of volume is sports-related, the functional-equivalence argument becomes difficult to refute.
The market concentration in two platforms (Polymarket and Kalshi controlling 85-90% of volume) also creates systemic fragility. A single adverse regulatory action in a major jurisdiction — a U.S. federal sports-contract ban, for example — could eliminate the majority of industry revenue overnight.
The prediction market sector is growing faster than the legal frameworks governing it can adapt. A 2,000% volume increase in 15 months has turned what was a niche financial instrument into a global regulatory flashpoint. The industry's position is precarious: the Bernstein $1 trillion forecast depends on continued access to sports contracts, which are precisely the category drawing the most intense regulatory scrutiny.
No jurisdiction outside the U.S. has created a bespoke regulatory framework for prediction markets. Every enforcement action to date has applied existing gambling law. Inside the U.S., the CFTC's claim of exclusive jurisdiction faces live challenges from state gaming boards with decades of regulatory infrastructure and political motivation to protect their sportsbook licensees' market share.
The economic utility of prediction markets — superior forecasting, price discovery, hedging — is not in dispute. What is in dispute is whether that utility is sufficient to justify a distinct regulatory classification, or whether the sector's volume composition (90% sports) means it is functionally a betting exchange that has secured a federal license its state-level counterparts cannot.
The next 12 months will likely determine whether prediction markets mature into a regulated financial sector or fragment into a patchwork of national bans with a single U.S. safe harbor. The volume numbers suggest the demand is real. The regulatory trajectory suggests the supply of legal access is narrowing.