Name: December Inflation U.K. - Monthly
Start: 2025-12-18T20:29:54.51394Z
End: 2026-01-21T00:00:00Z

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This is a market about the monthly variation of consumer prices in the U.K., before seasonal adjustment, as reported by the Office for National Statistics (ONS).

This market will resolve according to the number the Consumer Price Index (CPI) changed by in December 2025 (% change) according to the monthly ONS report.

The resolution source for this market will be the ONS Consumer Price Index monthly report released for December 2025 (https://www.ons.gov.uk/economy/inflationandpriceindices/bulletins/consumerpriceinflation/previousreleases), currently scheduled to be released on January 21, 2026. 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 this report by choosing the report for the relevant month from the previous releases page for price indices on the ONS website (https://www.ons.gov.uk/economy/inflationandpriceindices/bulletins/consumerpriceinflation/previousreleases). The relevant figure can be found in the "Consumer price inflation rates" table under the column labeled "CPI 1-month rate (%)" for the relevant month.

Note: the resolution source for this market will be the official monthly ONS CPI news release which reports monthly inflation change to only one decimal point (e.g. 1.9%). Thus, this is the level of precision that will be used when resolving the market. For the full release schedule, see: https://www.ons.gov.uk/releasecalendar

-0.1%

0.2%

≤-0.2%

≥0.3%

0.0%

0.1%

December Inflation U.K. - Monthly

This is a market about the monthly variation of consumer prices in Canada, before seasonal adjustment, as reported by Statistics Canada.

This market will resolve according to the number the Consumer Price Index (CPI) increased in December 2025 (% change) according to the monthly Statistics Canada report.

The resolution source for this market will be the Statistics Canada Consumer Price Index monthly report released for December 2025 (https://www.statcan.gc.ca/en/start), currently scheduled to be released on January 19, 2026. 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.

Note: the resolution source for this market will be the official monthly Statistics Canada CPI news release which reports monthly inflation change to only one decimal point (e.g. 1.9%). Thus, this is the level of precision that will be used when resolving the market. For the full release schedule, see: https://www150.statcan.gc.ca/n1/dai-quo/cal1-eng.htm?sk=3665

Will Canada's monthly inflation increase by ≤0.0% in December?

This is a market about the variation of consumer prices over the 12-month period ending December 2025 in Canada, before seasonal adjustment, as reported by Statistics Canada.

This market will resolve according to the number the Consumer Price Index (CPI) increased by over the 12-month period ending December 2025 (% change) according to the monthly Statistics Canada report.

The resolution source for this market will be the Statistics Canada Consumer Price Index monthly report released for December 2025 (https://www.statcan.gc.ca/en/start), currently scheduled to be released on January 19, 2026. 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 this report by clicking on the “Consumer Price Index” option under the "Key Indicators" heading on the home page of https://www.statcan.gc.ca/en/start and selecting "Table 1". The relevant figure can be found under the "% change" column for the relevant month and year compared to the same month of the previous year.

Note: the resolution source for this market will be the official monthly Statistics Canada CPI news release which reports inflation change over 12-month periods to only one decimal point (e.g. 1.9%). Thus, this is the level of precision that will be used when resolving the market. For the full release schedule, see: https://www150.statcan.gc.ca/n1/dai-quo/cal1-eng.htm?sk=3665

Will Canada's annual inflation increase by 2.1% in December?

This is a market about the variation of consumer prices in the Eurozone over the 12-month period ending December 2025 as reported by Eurostat.

This market will resolve according to the number the Harmonised Index of Consumer Prices (HICP) increased by over the 12-month period ending December 2025 (% change) according to the monthly Eurostat report.

The resolution source for this market will be the Eurostat Harmonised Index of Consumer Prices monthly report released for December 2025, currently scheduled to be released on January 19, 2026. 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 this report on the Eurostat website (https://ec.europa.eu/eurostat/en/) by selecting the "Database" option from the "Data" dropdown, opening the "Data navigation tree" folder, then the "Economy and finance" folder, then the "Prices (prc)" folder, then the "Harmonised index of consumer prices (HICP) (prc_hicp)" folder, and opening the file named "HICP - monthly data (annual rate of change) (prc_hicp_manr)". The relevant figure can be found in the column for the relevant month in the row marked "Euro area - 20 countries (from 2023)".

Note: the resolution source for this market will be the official monthly Eurostat HICP news release which reports inflation change over 12-month periods to only one decimal point (e.g. 1.9%). Thus, this is the level of precision that will be used when resolving the market. For the full release schedule, see: https://ec.europa.eu/eurostat/web/main/news/release-calendar

Will the Eurozone's annual inflation increase by 2.1% in December?

This market will resolve to “Yes” if the Consumer Price Index (CPI) increased by greater than the listed percent over the 12 month period ending with any month in 2026 according to the monthly Bureau of Labor Statistics (BLS) reports. Otherwise, this market will resolve to "No".

The resolution source for this market will be the BLS Consumer Price Index reports released for each month of 2026 (https://www.bls.gov/bls/news-release/cpi.htm). Resolution of this market will take place upon release of the aforementioned data.

This market may not resolve to "No" until the December 2026 report is issued. Once the December 2026 report is issued, any revisions to previously released CPI figures will not be counted toward this market's resolution. If the CPI report for December 2026 is not issued by January 31, 2027, 11:59 PM ET, this market will resolve based on CPI figures which have already been made available by the BLS.

Note: the resolution source for this market will be the official monthly BLS CPI news release which reports inflation over 12 month periods to only one decimal point (e.g. 2.9%). Thus, this is the level of precision that will be used when resolving the market.

Will inflation reach more than 3% in 2026?

This is a market about the monthly variation of consumer prices in Argentinian, before seasonal adjustment, as reported by the National Institute of Statistics and Census (INDEC) of Argentina.

This market will resolve according to the number the Consumer Price Index (CPI / IPC) increased in December 2025 (Variación % mensual Total nacional), according to the monthly INDEC report.

The resolution source for this market will be the INDEC Consumer Price Index report released for December 2025 (https://www.indec.gob.ar/), currently scheduled to be released on January 13, 2026. Resolution of this market will take place upon release of the aforementioned data. 

You can find this report by clicking on the “Precios al consumidor” option on the home page of https://www.indec.gob.ar/, and searching the pdf for the figure under “Variación % mensual Total nacional”.

Note: the resolution source for this market will be the official monthly INDEC CPI (IPC) news release which reports monthly inflation change to only one decimal point (e.g. 1.9%). Thus, this is the level of precision that will be used when resolving the market.

Will monthly inflation be between 2.4% and 2.6% in December?

This is a market about Argentinian inflation over the 12-month period ending December 2025, before seasonal adjustment, as reported by the National Institute of Statistics and Census (INDEC) of Argentina.

This market will resolve according to the percentage increase in Consumer Price Index (CPI / IPC) over the 12-month period ending in December 2025 (Variación % interanual Total nacional) according to the monthly INDEC report.

The resolution source for this market will be the INDEC Consumer Price Index report released for December 2025 (https://www.indec.gob.ar/), scheduled to be released in January 2026. Resolution of this market will take place upon release of the aforementioned data. If the report for December 2025 is not released by January 31, 2026, this market will resolve according to the last figure published.

You can find this report by clicking on the “Precios al consumidor” option on the home page of https://www.indec.gob.ar/, and searching the pdf for the figure under “Variación % interanual Total nacional”.

Note: the resolution source for this market will be the official monthly INDEC CPI (IPC) news release which reports inflation over 12 month periods to only one decimal point (e.g. 33.6%). Thus, this is the level of precision that will be used when resolving the market.

Will annual inflation increase by between 30% and 32.9% in December?

This market will resolve according to the UK real gross domestic product (GDP) compared with the same quarter a year ago in the "GDP First quarterly estimate, UK" release for Q4 of 2025, scheduled for February 12, 2026, 7:00 AM.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

The GDP release will be made available here: https://www.ons.gov.uk/economy/grossdomesticproductgdp/bulletins/gdpfirstquarterlyestimateuk/previousreleases

If no data for the specified quarter is released by the date the next quarter's data is scheduled to be released, this market will resolve based on data from the last available quarter.

Note: data from the initial release of the referenced GDP report is what will be used to resolve this market. Data may be revised during the following quarter or as a part of the next estimate's publication, however any revisions to GDP report data made after the initial release will not be considered for this market's resolution.

Will UK GDP growth in Q4 2025 be between 1.0% and 1.5%?

The IPCA (t. Broad National Consumer Price Index) is the official inflation rate measure used by the Brazilian government, tracked by the Brazilian Institute of Geography and Statistics (IBGE). The IPCA reflects the cost of living for households across urban areas in Brazil, measuring changes in prices for a diverse set of goods and services.

This market will resolve to “Yes” if the 12-month IPCA for December 2025 is below 5.50%. Otherwise, this market will resolve to “No”.

This market will resolve according to IBGE's (https://www.ibge.gov.br/en/indicators#ipca) public release of 12 month IPCA figure for December 2025, expected in January 2026. If the publication of this figure is delayed beyond February 28, 2026 ET, this market will resolve according to the last published figure.

Because this market's resolution source reports inflation over 12 month periods to two decimal points (e.g. 4.56%), this is the level of precision that will be used when resolving the market.

Brazil’s 12-month inflation below 5.50% for December 2025?

This market will resolve to "Yes" if the Bureau of Labor Statistics fails to release any monthly report on the Consumer Price Index by 11:59PM ET on the scheduled release date between December 1, 2025 and December 31, 2026, 11:59PM ET. Otherwise, this market will resolve to "No".

If an announcement is made by the White House or the BLS that the monthly CPI release will be delayed or cancelled altogether, this market will immediately resolve to "Yes".

The resolution source for this market will be information from the BLS or a consensus of credible reporting. 

BLS delays another CPI release before 2027?

This market will resolve to "Yes" if both of the following conditions prove true at any point in 2025:

1) The "US recession in 2025?" market resolves to "Yes" (https://polymarket.com/event/us-recession-in-2025).

2) The Consumer Price Index (CPI) increases by 5.0% or more over the 12 month period ending in any month between April 2025 and December 2025 according to the US Bureau of Labor Statistics (https://www.bls.gov/bls/news-release/cpi.htm#current)

Otherwise, this market will resolve to "No".

This market will not resolve until all relevant figures are reported for the period of time encompassing December 2025.

The resolution sources for this market will be the NBER, BEA (https://www.bea.gov/data/gdp/gross-domestic-product), and BLS (https://www.bls.gov/bls/news-release/cpi.htm#current), as well as the "US recession in 2025?" market on Polymarket.

US stagflation in 2025?

This market will resolve according to China's Y/Y Growth Rate of Gross Domestic Product (GDP) in the "Preliminary Accounting Results of GDP" release for Q4 of 2025, scheduled for some time in January, 2026.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

The GDP release will be made available here: https://www.stats.gov.cn/english/PressRelease/

If no data for the specified quarter is released by the date the next quarter's data is scheduled to be released, this market will resolve based on data from the last available month.

Note: data from the initial release of the referenced GDP report is what will be used to resolve this market. Data may be revised during the following quarter or as a part of the next estimate's publication, however any revisions to GDP report data made after the initial release will not be considered for this market's resolution.

Will China GDP growth in Q4 2025 be between 4.5% and 5.0%?

This market will resolve according to the German GDP growth rates over the same quarter of the previous year % change, based on seasonally adjusted data, in the first release of the "Gross domestic product: detailed economic performance results" press release for Q4 of 2025, expected to be released at the end of January 2026.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

The GDP release will be made available here: https://www.destatis.de/EN/Themes/Economy/National-Accounts-Domestic-Product/_node.html

If no data for the specified quarter is released by March 31, 2026, 11:59 PM CET, this market will resolve based on data from the last available quarter.

Note: the resolution source for this market reports "on the same quarter a year earlier (price adjusted)" to only one decimal point (e.g. 0.3%). Thus, this is the level of precision that will be used when resolving the market.

Note: data from the initial release of the referenced flash GDP report is what will be used to resolve this market. Data may be revised during the following quarter, or as a part of the next estimate's publication; however, any revisions to GDP report data made after the initial release of the specified report will not be considered for this market's resolution.

Will Germany GDP growth in Q4 2025 be exactly 0.2%?

This market will resolve according to the EU GDP growth rates over the same quarter of the previous year % change, based on seasonally adjusted data, in the "GDP and employment flash estimates for the fourth quarter of 2025" flash release for Q4 of 2025, scheduled for January 30, 2026.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

The GDP release will be made available here: https://ec.europa.eu/eurostat/web/main/news/euro-indicators

If no data for the specified quarter is released by the date the next quarter's data is scheduled to be released, this market will resolve based on data from the last available quarter.

Note: data from the initial release of the referenced flash GDP report is what will be used to resolve this market. Data may be revised during the following quarter or as a part of the next estimate's publication, however any revisions to GDP report data made after the initial release of the specified report will not be considered for this market's resolution.

Will Eurozone GDP growth in Q4 2025 be between 1.0 and 1.5%?

This market will resolve to the amount of basis points the upper bound of the deposit facility rate is changed by versus the level it was prior to the European Central Bank's (ECB) March 2026 meeting.

If the deposit facility rate is changed to a level not expressed in the displayed options, the change will be rounded up to the nearest 25 basis points and will resolve to the relevant bracket.
For example, if the deposit facility rate is increased or decreased by 12.5 basis points, it will be treated as a 25 basis point change for the purposes of resolution.

The resolution source for this market is information released by the European Central Bank after its March 19, 2026 policy meeting, as listed on the official ECB calendar:
https://www.ecb.europa.eu/press/calendars/mgcgc/html/index.en.html

The level and change of the deposit facility rate is also published at the official ECB interest rates page:
https://www.ecb.europa.eu/stats/policy_and_exchange_rates/key_ecb_interest_rates/html/index.en.html

This market may resolve as soon as the ECB releases its interest rate decision following the March 19, 2026 meeting.

If no interest rate decision or update is published by March 31, 20256, 11:59 PM ET, this market will resolve to the “No change” bracket.

Will the ECB announce no change at the March 2026 meeting?

This market will resolve to “Yes” if the upper bound of the European Central Bank’s (ECB) deposit facility rate is increased at any point between January 1, 2026 and the conclusion of the ECB's December 2026 meeting, currently scheduled for December 16-17, 2026. Otherwise, this market will resolve to “No”.

This market may not resolve to "No" until the ECB has released its rate change decision following its December meeting. If, however, the ECB’s December meeting is cancelled, postponed after December 31, 2026, or the rate change decision for that meeting is otherwise unknown by December 31, 2026, 11:59 PM ET, and no qualifying rate increase has occurred, this market will resolve immediately to “No”.

The primary resolution source for this market will be the European Central Bank (https://www.ecb.europa.eu/stats/policy_and_exchange_rates/key_ecb_interest_rates/html/index.en.html); however, a consensus of credible reporting may also be used.

ECB rate hike in 2026?

This market will resolve to “Yes” if the upper bound of the European Central Bank’s (ECB) deposit facility rate is decreased at any point between January 1, 2026 and the conclusion of the ECB's December 2026 meeting, currently scheduled for December 16-17, 2026. Otherwise, this market will resolve to “No”.

This market may not resolve to "No" until the ECB has released its rate change decision following its December meeting. If, however, the ECB’s December meeting is cancelled, postponed after December 31, 2026, or the rate change decision for that meeting is otherwise unknown by December 31, 2026, 11:59 PM ET, and no qualifying rate decrease has occurred, this market will resolve immediately to “No”.

The primary resolution source for this market will be the European Central Bank (https://www.ecb.europa.eu/stats/policy_and_exchange_rates/key_ecb_interest_rates/html/index.en.html), however a consensus of credible reporting may also be used.

ECB rate cut in 2026?

This market will resolve to "Yes" if the Bureau of Labor Statistics (BLS) ceases regular publication of any of the following reports: monthly Employment Situation reports (nonfarm payrolls and unemployment rate), Consumer Price Index (CPI), Producer Price Index (PPI), Employment Cost Index, Job Openings and Labor Turnover Survey (JOLTS), by December 31, 2025 at 11:59 PM ET. Otherwise, it will resolve to "No."

For purposes of this market, “ceases regular publication” means any of the following:

- The BLS officially announces it will no longer publish the report on its regular schedule.
- The BLS misses three consecutive scheduled releases of the report without providing the data within 30 days of each scheduled release date.
- The BLS announces that the report is discontinued, terminated, or permanently suspended.
- Legislative or executive action explicitly prohibits or defunds the publication of the report.

The following do NOT qualify as cessation:
- Temporary delays or postponements followed by subsequent publication (including delays caused by government shutdowns).
- Changes in methodology, seasonal adjustment, or calculation methods while continuing publication.
- Changes in publication frequency (e.g., monthly to quarterly) while maintaining regular releases.
- Format changes (e.g., digital-only, layout changes).
- Publishing preliminary or partial data with full data forthcoming.
- Changes to specific components within a report while the overall data series continues.
- Combining the report with other reports while still publishing the underlying data.
- BLS delays the jobs report due to a shutdown, then publishes it.
- BLS changes CPI methodology but continues publishing monthly CPI.
- BLS shifts employment data from monthly to quarterly.
- The Federal Reserve begins publishing employment data while BLS continues its own.
- BLS website outage delays posting, but data is released via other channels.
- BLS publishes preliminary data pending final adjustments.

The primary resolution source will be a consensus of credible reporting. 

Will BLS stop reporting payroll data this year?

This market will resolve to "Yes" if the 30-Year Fixed Rate Mortgage Average in the United States falls below 6.00% at any point between September 2 and December 31, 2025. Otherwise, this market will resolve to "No".

If, for any reason, there is no data point for this market's resolution date on either of the sources listed below, information for the nearest previously available date will be used.

The primary resolution source for this market is Freddie Mac, specifically https://www.freddiemac.com/pmms. The data that will be looked at is the "30Y FRM" as indicated on the graph titled "Primary Mortgage Market Survey®". If the resolution source is unavailable, https://fred.stlouisfed.org/series/MORTGAGE30US will be looked at instead. If both sources are unavailable, other credible reporting may be used.

December Inflation U.K. - Monthly

≤-0.2%
$54 Vol.
13%

-0.1%
$69 Vol.
9%

0.0%
$50 Vol.
8%

0.1%
$70 Vol.
16%

0.2%
$90 Vol.
23%

≥0.3%
$110 Vol.
59%
0123456789
%

Market Context

December Inflation U.K. - Monthly

Rules

December Inflation U.K. - Monthly

Market Context

December Inflation U.K. - Monthly

About

Related

December Inflation U.K. - Monthly

≤-0.2%$54 Vol.13%buy Yes17¢buy No91¢

-0.1%$69 Vol.9%buy Yes15¢buy No98¢

0.0%$50 Vol.8%buy Yes12¢buy No96¢

0.1%$70 Vol.16%buy Yes26¢buy No94¢

0.2%$90 Vol.23%buy Yes32¢buy No87¢

≥0.3%$110 Vol.59%0123456789%buy Yes67¢buy No49¢

Market Context

December Inflation U.K. - Monthly

Rules

December Inflation U.K. - Monthly

Market Context

December Inflation U.K. - Monthly

About

Related

≤-0.2%
$54 Vol.
13%

-0.1%
$69 Vol.
9%

0.0%
$50 Vol.
8%

0.1%
$70 Vol.
16%

0.2%
$90 Vol.
23%

≥0.3%
$110 Vol.
59%
0123456789
%