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icon for Bank of Japan Decision in December?
World·BOJ

Bank of Japan Decision in December?

icon for Bank of Japan Decision in December?
World·BOJ

Bank of Japan Decision in December?

Oct 30

Dec 18

Oct 30

Dec 18

25 bps increase 69%

No change 32%

25 bps decrease 1.5%

50+ bps decrease 1.1%

Polymarket
NEW

25 bps increase 69%

No change 32%

25 bps decrease 1.5%

50+ bps decrease 1.1%

Polymarket
NEW

50+ bps decrease

$259 Vol.

1%

25 bps decrease

$254 Vol.

1%

No change

$1,500 Vol.

32%

25 bps increase

$2,069 Vol.

69%

50+ bps increase

$416 Vol.

<1%

This market will resolve according to the change in basis points in the uncollateralized overnight call rate resulting from the December 2026 meeting of the Bank of Japan’s Policy Board, relative to the level it was prior to this meeting. The resolution source will be official information from the Bank of Japan, including the statement or release from its December 2026 Monetary Policy Meeting, scheduled for December 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s Policy Board resulting from its December 2026 meeting with relevant data is issued. If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound. If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size. If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.Persistent underlying inflation near the Bank of Japan’s 2% target, combined with wage growth and yen depreciation pressures, drives the 68% market-implied probability of a 25 basis point rate increase at the December 2026 meeting. The BOJ lifted its policy rate to 1.25% in September amid broadening price pressures and signals of preemptive tightening to prevent overshoots, following earlier hikes that brought rates to multi-decade highs. August core CPI eased to 1.7% year-over-year due to subsidies, yet headline inflation held near 1.9%, reinforcing expectations for gradual normalization roughly every six months. Trader consensus, backed by real capital, prices in continued adjustment of monetary accommodation while acknowledging risks from external shocks, fiscal policy, or softer data that could favor no change at the 32.5% level.

This market will resolve according to the change in basis points in the uncollateralized overnight call rate resulting from the December 2026 meeting of the Bank of Japan’s Policy Board, relative to the level it was prior to this meeting.

The resolution source will be official information from the Bank of Japan, including the statement or release from its December 2026 Monetary Policy Meeting, scheduled for December 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s Policy Board resulting from its December 2026 meeting with relevant data is issued.

If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound.

If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size.

If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.This market will resolve according to the change in basis points in the uncollateralized overnight call rate resulting from the December 2026 meeting of the Bank of Japan’s Policy Board, relative to the level it was prior to this meeting. The resolution source will be official information from the Bank of Japan, including the statement or release from its December 2026 Monetary Policy Meeting, scheduled for December 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s Policy Board resulting from its December 2026 meeting with relevant data is issued. If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound. If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size. If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.
Volume
$4,499
End Date
Dec 18, 2026
Market Opened
Sep 18, 2026, 7:57 PM ET

Resolver

0x69c47De9D...
This market will resolve according to the change in basis points in the uncollateralized overnight call rate resulting from the December 2026 meeting of the Bank of Japan’s Policy Board, relative to the level it was prior to this meeting. The resolution source will be official information from the Bank of Japan, including the statement or release from its December 2026 Monetary Policy Meeting, scheduled for December 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s Policy Board resulting from its December 2026 meeting with relevant data is issued. If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound. If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size. If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.Persistent underlying inflation near the Bank of Japan’s 2% target, combined with wage growth and yen depreciation pressures, drives the 68% market-implied probability of a 25 basis point rate increase at the December 2026 meeting. The BOJ lifted its policy rate to 1.25% in September amid broadening price pressures and signals of preemptive tightening to prevent overshoots, following earlier hikes that brought rates to multi-decade highs. August core CPI eased to 1.7% year-over-year due to subsidies, yet headline inflation held near 1.9%, reinforcing expectations for gradual normalization roughly every six months. Trader consensus, backed by real capital, prices in continued adjustment of monetary accommodation while acknowledging risks from external shocks, fiscal policy, or softer data that could favor no change at the 32.5% level.

This market will resolve according to the change in basis points in the uncollateralized overnight call rate resulting from the December 2026 meeting of the Bank of Japan’s Policy Board, relative to the level it was prior to this meeting.

The resolution source will be official information from the Bank of Japan, including the statement or release from its December 2026 Monetary Policy Meeting, scheduled for December 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s Policy Board resulting from its December 2026 meeting with relevant data is issued.

If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound.

If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size.

If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.This market will resolve according to the change in basis points in the uncollateralized overnight call rate resulting from the December 2026 meeting of the Bank of Japan’s Policy Board, relative to the level it was prior to this meeting. The resolution source will be official information from the Bank of Japan, including the statement or release from its December 2026 Monetary Policy Meeting, scheduled for December 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s Policy Board resulting from its December 2026 meeting with relevant data is issued. If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound. If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size. If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.
Volume
$4,499
End Date
Dec 18, 2026
Market Opened
Sep 18, 2026, 7:57 PM ET

Resolver

0x69c47De9D...

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Frequently Asked Questions

"Bank of Japan Decision in December?" is a prediction market on Polymarket with 5 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "25 bps increase" at 69%, followed by "No change" at 32%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 69¢ implies that the market collectively assigns a 69% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Bank of Japan Decision in December?" is a newly created market on Polymarket, launched on Sep 18, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Bank of Japan Decision in December?," browse the 5 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Bank of Japan Decision in December?" is "25 bps increase" at 69%, meaning the market assigns a 69% chance to that outcome. The next closest outcome is "No change" at 32%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Bank of Japan Decision in December?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.