TOTAL VOLUME:
$124b
24H VOL:
$82,345,145
24H TRANSACTIONS:
2,121,338,658
OPEN INTEREST:
$1,285,568,173
364,467
Markets across
33,191
events
MATCHED EVENTS:
3,073
PLATFORM COVERAGE:
5
Polymarket:
41%
VS.
Kalshi:
59%
$
This event group tracks Brazil's 12-month consumer price inflation (IPCA) as measured by the Brazilian Institute of Geography and Statistics (IBGE) for the period ending December 2026. Polymarket offers 11 binary markets covering specific inflation bands (e.g., 4.50%-4.99%, 5.00%-5.49%) plus extreme outcomes, while Kalshi offers 10 binary markets using threshold-based logic (e.g., 'above 3.50%', 'above 5.25%'). Both platforms resolve using the official IBGE December 2026 IPCA report, scheduled for release on January 12, 2027.
This is a market about the variation of consumer prices in Brazil over the 12-month period ending December 2026, as reported by the Brazilian Institute of Geography and Statistics (IBGE). This market will resolve according to the percentage change in the Extended National Consumer Price Index (IPCA) during the 12-month period ending December 2026 according to the monthly IBGE report. The resolution source for this market will be the IBGE Extended National Consumer Price Index monthly report released for December 2026, currently scheduled to be released on January 12, 2027. Resolution of this market will take place upon release of the aforementioned data. If no data for the specified month is released by the date the next month's data is scheduled to be released, this market will resolve based on data from the last available month. You can find the relevant figure by locating the report for December 2026 on the Press Releases page (https://agenciadenoticias.ibge.gov.br/en/agencia-press-room.html), locating the Period-Rate table and finding the IPCA growth rate figure in the column labeled "Rate" and the Row labeled “Cumulative in the year / 12 Months”. Changes in the IBGE’s reporting format will not disqualify a published relevant figure from counting. Note: the resolution source for this market will be the official monthly IBGE IPCA news release which reports inflation during 12-month periods to two decimal points (e.g. 4.26%). Thus, this is the level of precision that will be used when resolving the market. For the full release schedule, see: https://www.ibge.gov.br/en/calendar.html
The event resolves Yes if Brazil's 12-month inflation rate in December 2026 exceeds any of the specified thresholds: 3.25%, 3.50%, 3.75%, 4.00%, 4.25%, 4.50%, 4.75%, 5.00%, 5.25%, or 5.50%. Each threshold represents a separate resolution condition, with resolution based on the actual inflation rate reported for that month.
Prediction market odds reflect real-money consensus from thousands of traders on Polymarket and Kalshi, often incorporating forward-looking expectations faster than traditional analyst surveys. While formal economist forecasts tend to cluster around central bank guidance, markets price tail risks and policy surprises more dynamically. The Brazil Annual Inflation 2026 market allows you to compare live implied probabilities against published analyst ranges, helping identify whether markets are pricing in hawkish or dovish scenarios relative to consensus estimates from major financial institutions.
Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Polymarket and Kalshi may define outcome bands or reference dates differently, attracting distinct trader bases with varying risk appetites and time horizons. Polymarket currently shows 41.1% on its top outcome, while Kalshi shows 90.0%, a spread of 48.9 percentage points. Differences in liquidity, user geography, fee structures, and market design can cause prices to diverge even when tracking the same underlying economic event, creating arbitrage opportunities for alert traders.
Key catalysts include Central Bank of Brazil policy decisions, currency fluctuations affecting import costs, commodity price shocks, fiscal policy announcements, and wage growth trends. Global interest rate movements, energy prices, and supply-chain disruptions also influence Brazil's inflation outlook. Monthly IPCA releases throughout 2026 will provide real-time data that traders incorporate into market prices, while unexpected political or economic developments can trigger sharp repricing across Polymarket and Kalshi simultaneously.