Sources of Changes in Current Account Balances and Market Operations (June)

The Bank of Japan published its "Sources of Changes in Current Account Balances and Market Operations" data for June on July 1, posted as a spreadsheet on the Bank's statistics pages, per the feed.

The series is a regular BoJ statistical release tracking the factors that move financial institutions' current account balances at the central bank — such as banknotes and treasury funds — alongside the Bank's money market operations, making it a standard reference for reading liquidity conditions in the Japanese money market.

What is confirmed is the July 1 publication of the June data in spreadsheet form. The feed carried no summary figures, so balance levels, operation volumes and month-on-month changes remain unverified here; they sit in the file on the Bank's statistics pages.

Background

Current account balances are the deposits that banks and other financial institutions hold at the Bank of Japan, and they are the raw material of monetary policy implementation: reserve requirements are met through them, interbank payments settle across them, and the uncollateralized overnight call rate — the BoJ's operating target — is the price of borrowing them. The "sources of changes" framework decomposes daily movements in those balances into autonomous factors, chiefly banknote issuance and flows between the government's accounts and the private sector, and the Bank's own operations, which offset or reinforce those flows.

The series matters to money market participants because Japan's financial system operates with an exceptionally large stock of central bank reserves, the legacy of years of large-scale asset purchases. As the BoJ has moved away from that era of extraordinary easing, the month-by-month record of how balances shift and what operations the Bank runs has become one of the practical windows into how it manages the transition without disrupting short-term funding markets.

What comes next

The figures themselves — balance levels, operation volumes and the month-on-month decomposition — are in the spreadsheet on the BoJ's statistics pages, the next stop for anyone tracking Japanese money market conditions. The series follows a regular monthly cadence, so the July data can be expected in the same channel at the start of August, alongside the Bank's other routine liquidity statistics.