Table of Contents
This service uses statistical data published by the Bank of Japan, but the content of this service is not guaranteed by the Bank of Japan.
This service uses statistical data published by the Bank of Japan, but the content of this service is not guaranteed by the Bank of Japan.
The BOJ (Bank of Japan) raised the uncollateralized overnight call rate from 0.727% in the prior month to 0.841% in June 2026, accelerating the normalization of monetary policy. The monetary base contracted by -13.7% year‑on‑year, with the pace of reduction widening, clarifying a two‑front strategy of quantitative tightening alongside interest rate increases. At the same time, consumer prices showed a mixed picture: core CPI held steady at +1.4% year‑on‑year, while core‑core CPI fell to +1.8%, signaling a weakening of underlying inflationary pressure. Upstream inflationary pressure reflected in the Corporate Goods Price Index (CGPI) at 135.4 and a weaker yen (USD/JPY 160.7) contrasts with weakening downstream pass‑through to final prices—this divergence will be a key focus for future policy management.
BOJ statistics show the uncollateralized overnight call rate reached 0.841% in June 2026, up 0.114 percentage points from 0.727% in the prior month. This level substantially exceeds the January 2026 rate of 0.728% and clearly indicates the BOJ's gradual path toward normalization. The call rate had been in a narrow 0.727–0.728% range from January through May, but rose sharply in June, reflecting the additional rate hike decided at the monetary policy meeting.
The monetary base stood at ¥559.2 trillion, down ¥16.6 trillion from ¥575.8 trillion the previous month, and the year‑on‑year contraction widened to -13.7% from -12.2% the prior month. The pace of decline has accelerated steadily since -9.5% in January 2026, indicating a sustained process of quantitative tightening. M2 money stock was ¥1,296.4 trillion, a ¥1.7 trillion decline from ¥1,298.1 trillion the previous month; however, the reduction in M2 was limited relative to the monthly -2.9% contraction in the monetary base. The credit multiplier was 2.32 (1,296.4 ÷ 559.2), up from 2.25 the prior month, suggesting that private financial institutions remain relatively active in lending.
The combination of higher short‑term policy rates and a shrinking monetary base shows the BOJ is advancing monetary normalization on multiple fronts. The rise in the call rate raises short‑term interest rates, while the monetary base contraction absorbs liquidity—these effects act together to tighten financial conditions.
The rise of the uncollateralized overnight call rate to 0.841% is a starting point that pushes up interest rates across short‑term money markets. However, average contracted lending rates have not been published since February 2026, making direct verification of pass‑through from the call rate to lending rates difficult. As of January 2026, the average lending rate was 1.383%, which was 0.655 percentage points above that month’s call rate of 0.728%. How this spread has changed by June is important for assessing monetary policy's impact on the real economy.
The typical lag for transmission from the call rate to lending rates is around 3–6 months, so the effects of the June rate hike on lending rates are expected to become prominent in the latter half of 2026. If corporate borrowing costs rise, this could suppress capital expenditure and inventory investment, and the impact may materialize in indices such as the CI and industrial production.
According to e‑Stat, the CPI for May 2026 was: aggregate 113.5 (year‑on‑year +1.5%), core CPI +1.4% y/y, and core‑core CPI +1.8% y/y. Core CPI held at +1.4% from the prior month, but core‑core CPI fell by 0.1 percentage point from +1.9%, confirming a deceleration in underlying price pressures excluding energy and fresh food.
The gap between aggregate CPI and core CPI (0.1 percentage point) reflects the contribution of fresh food, while the gap between core CPI and core‑core CPI (-0.4 percentage point) reflects downward pressure from energy prices. In January 2026, core CPI was +2.0% and core‑core CPI +2.6%, with core‑core exceeding core CPI; by May this relationship had reversed. This indicates that while energy price rises have lifted aggregate and core CPI, the baseline inflation rate for goods and services is slowing.
BOJ statistics show the Corporate Goods Price Index (CGPI) rose to 135.4 in June 2026, up 0.9 points from 134.5 the prior month, indicating continued upstream price pressure. From 128.4 in January 2026, CGPI has risen 7.0 points (+5.5%) over six months, largely driven by higher import prices associated with the weaker yen (USD/JPY 156.7 → 160.7).
By contrast, the Service Producer Price Index (SPPI) for firms was 114.7 in May 2026, unchanged from the prior month. The CGPI’s rapid rise relative to the muted pace of SPPI increases highlights a structural gap: increases in goods prices are not being fully passed through to service prices.
Comparing pass‑through from CGPI (up +5.5% since January) to core CPI (up +1.4%) shows final consumer prices have lagged well behind upstream cost increases, indicating firms are not fully transferring upstream cost rises into end‑consumer prices. This low pass‑through rate is a factor compressing corporate profits while contributing to relative stability in consumer prices.
e‑Stat data show the CI for May 2026 with the leading index at 116.8 and the coincident index at 118.5, both rising from the prior month. The leading index has risen 4.3 points since January 2026 (112.5), suggesting improved expectations for economic activity. The coincident index is up 0.6 points from January (117.9), indicating that current economic conditions remain firm.
The lagging index was unchanged at 111.5 from the prior month, implying that improvements in employment and income are proceeding slowly. The divergence between rising leading/coincident indices and a stagnant lagging index suggests a time lag before gains in the corporate sector transmit fully to households.
BOJ’s measures of underlying inflation show the trimmed mean at +2.7% y/y in May 2026 and the weighted median at +1.4% y/y. The trimmed mean fell 0.1 percentage point from +2.8% the prior month but remains above the BOJ’s 2% price stability target. The weighted median was unchanged at +1.4%, indicating that the central distribution of price changes remains below 2%.
The gap of 1.3 percentage points between the trimmed mean (+2.7%) and core CPI (+1.4%) suggests that substantial increases in a subset of items are lifting broader measures while the breadth of price increases is limited. Because the trimmed mean excludes the top and bottom 10% of price changes, it is less sensitive to extreme movements in items such as energy or imported foods. That the trimmed mean remains above 2% indicates some degree of underlying inflationary pressure, but the divergence from the weighted median reflects asymmetry in price dynamics.
In January 2026, the trimmed mean was +2.3% and the weighted median +1.6%; through May the trimmed mean rose while the weighted median fell. This pattern implies that the magnitude of price increases for certain items has expanded even as central price movements slowed—i.e., a divergence between the “strength” and the “breadth” of inflation.
BOJ statistics show USD/JPY at 160.7 in June 2026, a ¥2.4 depreciation from 158.3 in the prior month and a ¥4.0 (＋2.5%) depreciation from 156.7 in January 2026. NEER and REER data have not been released since March 2026, but as of February NEER stood at 70.1 and REER at 67.0, showing a modest yen appreciation from January.
The yen depreciation in USD/JPY likely reflects an expanding interest rate differential with the United States. Even though the BOJ raised the call rate to 0.841%, if U.S. policy rates remain high, the interest differential may still favor dollar selling of yen. Yen weakness contributes to higher CGPI and provides a transmission channel from import prices to CPI, although, as noted, the pass‑through to consumer prices has been limited so far.
M2 was ¥1,296.4 trillion in June 2026, down ¥1.7 trillion from the prior month but up ¥17.3 trillion (+1.4%) from ¥1,279.1 trillion in January 2026. While the monetary base is contracting sharply year‑on‑year (-13.7%), M2 remaining in positive territory shows that private financial institutions’ credit creation remains active.
The credit multiplier (M2 ÷ MB) was 2.32 in June, up from 2.17 in January, meaning that each unit of monetary base is supporting a larger amount of money stock, consistent with an aggressive lending posture by financial institutions. However, if the rise in the call rate passes through to lending rates, the pace of credit creation could slow going forward.
BOJ Tankan data for Q2 2026 show the business conditions DI for large‑manufacturing firms at +22 (previous quarter +17) and for large non‑manufacturing firms at +37 (previous +36), with notable improvement centered on manufacturing. Medium‑sized manufacturing firms recorded +17 (previous +16) and small manufacturing firms +9 (previous +7). While improvement is uneven across firm size, overall corporate sentiment remains solid.
However, forward‑looking DI fell: large manufacturing firms’ outlook DI is +14, down 8 points from the current +22, and large non‑manufacturing firms’ outlook DI is +29, down 8 points from +37. This indicates firms have become more cautious about future business conditions, likely reflecting concerns over monetary tightening and overseas economic uncertainty.
Assumed exchange rates reported in Q2 2026 were ¥152.57 for all firms and ¥151.55 for large manufacturing firms, roughly ¥8–9 stronger than the actual USD/JPY of 160.7. Firms are therefore operating in an environment with greater yen weakness than they had assumed. For exporters this is potentially a positive earnings shock, but higher import costs pose profit‑squeezing risks. The gap between assumed and spot exchange rates could prompt revisions to earnings forecasts and capital expenditure plans.
Ministry of Finance trade statistics show a trade surplus of ¥94.8 billion in December 2025, down from a surplus of ¥306.0 billion in November but still positive. Exports were ¥10,407.7 billion and imports ¥10,312.9 billion, both at high levels. After a sequence of trade deficits from July to October 2025, the balance turned positive in November, indicating an improving external demand environment.
Import values rose from ¥9,501.1 billion in July 2025 to ¥10,312.9 billion in December 2025, driven in part by yen depreciation raising import prices. This increase in import values is a primary driver of CGPI rises and an origin point for price transmission from upstream to downstream. Nevertheless, as noted earlier, the pass‑through to consumer prices has been limited and is likely to materialize over time.
A shift to a trade surplus can, in principle, exert yen‑buying pressure in FX markets, but with USD/JPY at 160.7 in June—moving further toward yen weakness—the trade surplus’s effect on the exchange rate appears offset by interest rate differential factors.
TOPIX fell from 4,013.23 on June 17, 2026 to 3,994.76 on June 30 (down 18.47 points, -0.5%), and stood at 4,038.98 on July 14, up 44.22 points (+1.1%) from the end of June. There was a decline to 3,963.36 on June 26, suggesting tightening financial conditions weighed on equities in late June.
On June 23 the index plunged 2.56% from the previous day, implying that some market‑relevant information on monetary policy affected valuations in that period. The index later recovered to the 4,100s in early July, but then retreated to 4,006.43 on July 8, indicating heightened volatility.
While monetary tightening is theoretically negative for equity valuations, expectations of improving corporate earnings and rising CI readings have provided support. TOPIX movements therefore reflect a balance between tightening policy effects and underlying real‑economy resilience.
CGPI at 135.4 (June) rising while core CPI is only +1.4% (May) indicates limited pass‑through from upstream to downstream prices. SPPI at 114.7 (May) remaining flat suggests even slower pass‑through to service prices. This delayed pass‑through may reflect firms absorbing cost increases by compressing margins, which is not inconsistent with the improved business conditions DI. Firms may be offsetting higher import costs with improved export margins from yen depreciation while restraining domestic price increases.
The rise in the call rate to 0.841% coupled with a monetary base contraction of -13.7% y/y is a clear tightening signal. Yet M2’s year‑on‑year positive growth and an increasing credit multiplier indicate robust private sector demand for funds. The rise in leading and coincident CI readings suggests the real economy remains resilient despite tightening, and that policy effects on activity may take time to materialize.
USD/JPY at 160.7 has been a principal driver of CGPI increases. The rise in import values (July–December 2025) reflects this yen depreciation, making CGPI→CPI a valid upstream-to-downstream transmission route. However, the gap between assumed exchange rates in Tankan (¥152.57) and the spot rate implies firms face larger‑than‑expected yen weakness, which could alter pricing behavior and earnings going forward.
The BOJ implemented an additional rate hike in June 2026 and is steadily advancing monetary normalization. Although the call rate at 0.841% remains low by historical standards, there is room for further gradual increases. Key issues for the next monetary policy meeting include the following.
First, the structural change in inflation signaled by the divergence between core CPI and core‑core CPI. With core CPI at +1.4%—below the 2% target—and core‑core CPI easing to +1.8%, underlying inflationary pressure appears to be fading. The trimmed mean at +2.7% driven by large increases in specific items and the weighted median at +1.4% indicating central price dynamics below 2% require a cautious assessment of inflation persistence.
Second, upward CGPI pressure and low pass‑through to CPI raise risks to corporate profitability. If firms cannot pass higher import costs resulting from yen depreciation into final prices, profit margin compression could erode wage‑setting capacity and reduce appetite for capital investment. The decline in forward DI in Tankan partly reflects these concerns.
Third, the time lag in monetary tightening affecting the real economy. As the call rate feeds through to lending rates and raises corporate financing costs, this may restrain capital and inventory spending. Although the leading CI remains on an upward path, the full effect of tightening is likely to become evident in the second half of 2026.
A structural challenge is sustaining a wages‑prices positive feedback loop. The decline in core‑core CPI suggests a slowdown in service price inflation, which may weaken the transmission of nominal wage increases into service prices. If wage gains do not diffuse from large firms to small and medium firms, and if pass‑through from goods to service prices remains limited, achieving a sustained 2% inflation target will be difficult.
The BOJ is therefore likely to continue cautious, gradual normalization while monitoring the interplay among prices, wages, and productivity. The evolving indicators on inflation structure and the increasingly cautious corporate outlook will be important considerations at the next policy meeting.
無担保コールレート（翌日物）: The interest rate on unsecured overnight interbank loans (repayable the next day). This is a representative short‑term policy rate targeted by the BOJ.
マネタリーベース: The total amount of currency supplied by the BOJ, comprising BOJ current account balances and currency in circulation (Bank of Japan notes issued plus coin in circulation). It is the monetary aggregate directly controlled by the central bank.
マネーストックM2: The sum of currency in circulation and deposits held at domestic banks, representing the money stock in the economy including credit creation by private financial institutions.
信用乗数: The ratio of the money stock to the monetary base (M2 ÷ MB). It indicates how many times the central bank’s base money has been multiplied through private sector credit creation.
コアCPI: Consumer Price Index excluding fresh food. Used to capture underlying price movements by removing volatile fresh food components. This is a reference indicator for the BOJ’s price stability objective.
コアコアCPI: Consumer Price Index excluding fresh food and energy. By excluding energy volatility, it aims to capture a more fundamental trend in prices.
企業物価指数（CGPI）: Corporate Goods Price Index tracking price movements of goods traded between firms. It captures upstream (producer‑stage) price changes and functions as a leading indicator for consumer prices.
企業向けサービス価格指数（SPPI）: Service Producer Price Index measuring price movements of services purchased by firms (transportation, communications, advertising, etc.).
刈込平均値: Trimmed mean: an average of CPI component price changes after excluding the top and bottom 10% extremes. The BOJ uses it to capture the core trend of inflation excluding extreme movements.
加重中央値: Weighted median: the inflation rate at which cumulative weights of CPI components reach 50% when sorted by price change. It represents the central tendency of price movements and is evaluated together with the trimmed mean.
景気動向指数CI: Composite indices for economic conditions (CI): composed of a leading index (indicators that move ahead of the economy), a coincident index (indicators that move with the economy), and a lagging index (indicators that move after the economy).
業況判断DI: Business Conditions Diffusion Index (DI) from the BOJ Tankan survey. It is the percentage point difference between firms reporting "favorable" and "unfavorable" conditions; higher positive values indicate stronger sentiment.
実効為替レート: An exchange rate index that is a trade‑weighted average of a currency versus major trading partners. NEER is the nominal effective exchange rate; REER adjusts the nominal rate for relative price changes.
This column was automatically generated by AI integrating Cabinet Office GDP data, Bank of Japan statistics, e-Stat public statistics, and market data as a macroeconomic analysis resource. This is not a recommendation to invest in any specific security. Please make investment decisions at your own responsibility and consult professionals as needed.