What time does the Bank of Japan announce its decision?

The Bank does not publish a fixed announcement time. The statement is released when the meeting concludes, during the Tokyo business day, which is the evening or night in the US. The Governor's press conference follows later that afternoon in Tokyo.

Why can a Bank of Japan decision move US index futures?

A large move in the yen or Japanese yields can change the cost and attractiveness of positions financed in yen, and those adjustments can spread to other markets. The effect varies; there is no fixed relationship.

Bank of Japan policy decision: an announcement without a fixed time

The Bank of Japan's Policy Board holds eight Monetary Policy Meetings a year. Unlike most central banks, it does not publish a fixed announcement time: the statement is released when the meeting concludes, usually during the Tokyo day, which is the US evening. Japanese yen futures (6J) and Nikkei futures react, often in a thin overnight book.

Senzoukria · Economic events · Updated September 2026

At a glance

Decided by: Policy Board of the Bank of Japan
Frequency: Eight Monetary Policy Meetings a year, each over two days
Announcement time: Not published in advance; released when the meeting ends
Quarterly report: Outlook for Economic Activity and Prices, at four meetings a year
Contracts in scope: 6J (CME); Nikkei 225 futures; Japanese government bond futures

What the Bank of Japan announces

At the end of each two-day meeting, the Bank publishes a statement on monetary policy with the decision on its short-term policy rate and any change to other operations, such as its bond purchases. The Governor then holds a press conference later the same afternoon, Tokyo time.

Four times a year the meeting also produces the Outlook for Economic Activity and Prices. The Bank states that the Bank's View section of that report is released immediately after the relevant meetings and the full text at 2:00 p.m. on the next business day.

Why the missing timestamp matters

There is no second to count down to. The statement comes out when the Board concludes, and the exact minute is only known when it happens.
Liquidity providers cannot step back at a known instant; the book tends to stay cautious for the whole window in which the release is possible.
The first print often arrives as a sudden sweep in a book that had been thin for some time, rather than after a sharp, timed withdrawal.
News of a decision can also surface through press reports before the meeting, which the market prices in advance.

Why futures react

The yen responds to the gap between Japanese and foreign interest rates, so a change in the Bank of Japan's policy path moves 6J directly. Japanese equity futures react through the currency and domestic rates. Because the yen has at times been used as a funding currency for positions elsewhere, a large yen move can spread to other markets, including US index futures in the overnight session. The direction and size depend on the gap between the decision and expectations.

Order flow in the US evening

The Tokyo business day falls in the US evening and night. At that time 6J and ES trade on Globex with far less participation than during the US day. On the heatmap, the 6J book around the expected window is often visibly sparse, and the release shows as a sweep through several levels at once. The footprint of the next bars indicates whether the move continues on sustained aggression or stalls as the book refills.

Because liquidity improves as Europe and then the US arrive, the overnight reaction is frequently tested again at the London open and at the US morning. A level set by a thin overnight sweep is a reference, not proof of consensus.

In Senzoukria

Bank of Japan rows appear in the News calendar under JP, which is off by default; enable it in the Countries filter. Rows naming the BoJ or the Bank of Japan are described as “BoJ policy — JPY + JGB driver.” The time shown for a row is the calendar source's time; since the Bank does not publish one, treat it as an approximate window.

The Tokyo session clock in the top strip shows when the Japanese cash market is open. On a Rithmic, Databento or bridge source, the heatmap on 6J shows the thin overnight book directly, and its HUD's trade rate shows whether anything is trading at all.

In the same section

Sources

Bank of Japan: Monetary Policy Meetings schedule (2026-09-25)

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Frequently asked questions

What time does the Bank of Japan announce its decision?: The Bank does not publish a fixed announcement time. The statement is released when the meeting concludes, during the Tokyo business day, which is the evening or night in the US. The Governor's press conference follows later that afternoon in Tokyo.
Why can a Bank of Japan decision move US index futures?: A large move in the yen or Japanese yields can change the cost and attractiveness of positions financed in yen, and those adjustments can spread to other markets. The effect varies; there is no fixed relationship.

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