Japan's economy saw a slight upward revision to its second-quarter growth, yet the underlying composition continues to signal weak domestic demand momentum. On Tuesday (September 8), the Cabinet Office released its second preliminary estimate for real GDP for the April-June 2026 period. After adjusting for price changes, the real GDP grew 0.4% quarter-on-quarter, translating to an annualised expansion of 1.4%, which is higher than the 0.3% quarterly and 1.1% annualised figures reported in the first preliminary estimate on August 17. Following this revision, the Japanese economy has now maintained positive growth for three consecutive quarters. However, private consumption, which holds the largest share of the economy, remained flat quarter-on-quarter, and corporate capital expenditure continued to decline. Growth in the second quarter was primarily supported by net exports, inventories, and government consumption.
The Bank of Japan is scheduled to hold its monetary policy meeting next week. This upward revision to GDP reinforces the assessment that the economy remains on a modest expansion path, but given the lacklustre performance in private demand, these data alone are insufficient to determine the next move in interest rate policy.
Annualised growth lifted from 1.1% to 1.4%
The second preliminary GDP report primarily incorporates more complete demand-side data, such as the Ministry of Finance's corporate enterprise statistics, on top of the initial estimate, often leading to adjustments in components like business investment. According to the Cabinet Office's latest seasonally adjusted data, real GDP grew 0.4% quarter-on-quarter in the second quarter, with annualised growth at 1.4%. Nominal GDP growth was revised up to 1.3% quarter-on-quarter from the 1.2% in the first estimate. The GDP deflator rose 2.6% year-on-year, consistent with the initial report. While the annualised figure of 1.4% is higher than the previously announced 1.1%, it still slightly trails the roughly 1.6% that some institutions had anticipated. The quarterly growth of 0.4%, however, broadly aligned with market expectations.
After the first estimate was published, corporate enterprise statistics released last week showed a 1.6% year-on-year increase in business equipment spending, leading markets to widely expect a certain degree of upward revision to second-quarter GDP. The final outcome matched this direction, though the scale of the adjustment was relatively limited. Notably, the April-June period was also the first full quarter impacted by the US-Iran conflict. Despite a clearly more complex external environment, the Japanese economy still achieved positive growth for the third consecutive quarter, but private consumption has yet to emerge as a primary growth driver.
Capital spending decline narrows but remains a drag
The most notable change in this GDP revision came from business equipment investment. Private sector capital expenditure fell 0.9% quarter-on-quarter in the second quarter, an improvement of 0.3 percentage points from the 1.2% decline in the initial estimate. Although the contraction has narrowed, it still indicates ongoing pressure on corporate capital spending in Japan. On an annualised basis, equipment investment dropped approximately 3.7%, shaving about 0.2 percentage points off the quarterly GDP growth rate. When calculating equipment investment, the second estimate combines the supply-side data used in the initial report with the latest corporate enterprise statistics, making this component typically one of the more significantly adjusted items in the GDP second estimate. Despite rising corporate profits and wages, whether companies will be willing to expand capital expenditure further still hinges on factors such as global demand, trade conditions, and energy costs.
Private consumption flat, domestic demand lacking momentum
In contrast to the upward revision in capital spending, household consumption showed no improvement. Private consumption was unchanged quarter-on-quarter in the second quarter, exactly matching the first estimate. More detailed household final consumption expenditure dipped 0.1% quarter-on-quarter. While private consumption grew 0.4% in the first quarter, it stalled again in the second quarter. Given that private consumption accounts for more than half of Japan's economy, its persistent weakness means that the current positive GDP growth cannot be simply interpreted as a broad-based recovery in domestic demand. Residential investment also fell 0.6% in the second quarter. Looking at the overall contribution, domestic demand subtracted 0.1 percentage points from GDP growth in the second quarter, an improvement from the negative 0.2 percentage points in the initial estimate, but still in contractionary territory.
Net exports and inventories underpin GDP
What is truly keeping the Japanese economy in positive growth territory remains primarily external demand and inventories. Net exports of goods and services contributed 0.5 percentage points to quarterly GDP growth in the second quarter, consistent with the first estimate. Exports grew 0.4% quarter-on-quarter, while imports fell 1.7%. Since the decline in imports was significantly larger than the change in exports, net exports provided a substantial statistical contribution to economic growth. This also implies that the positive contribution from external demand in the second quarter was not entirely driven by robust export growth; a considerable portion stemmed from reduced imports. Private inventory changes contributed approximately 0.3 percentage points, also serving as a significant source of positive GDP growth. Government final consumption rose 1.7% quarter-on-quarter, slightly higher than the 1.6% in the initial estimate, contributing about 0.3 percentage points to second-quarter GDP growth. In contrast, public investment weakened further, falling 0.5% quarter-on-quarter compared to a 0.1% decline in the first estimate. The same official accounting data shows that changes in public sector inventories dragged GDP growth by about 0.5 percentage points, clearly offsetting the positive contribution from private inventories. On an annualised contribution basis, net exports boosted GDP by roughly 1.8 percentage points, private inventories contributed about 1.2 percentage points, and government consumption added around 1.3 percentage points, while business equipment investment subtracted approximately 0.7 percentage points. Therefore, from a growth structure perspective, Japan's 1.4% annualised growth in the second quarter is not as strong as the headline number suggests: private consumption has not grown, capital spending continues to decline, and expansion is increasingly reliant on external demand, inventories, and government expenditure.
Real wages rise for seventh straight month
On the same day as the GDP second estimate, Japan's Ministry of Health, Labour and Welfare also released wage data for July. Real wages, adjusted for inflation, grew 2.4% year-on-year, marking the seventh consecutive month of positive growth. Per capita cash earnings reached 436,401 yen, up 4.7% nominally year-on-year, one of the faster monthly increases since 1997, and also marking the sixth consecutive month that nominal wages have grown by more than 3%. Basic wages rose 4.1% year-on-year. Wage data and GDP are two independent statistical series, but their release on the same day has drawn greater market attention to whether wage increases can ultimately translate into actual household consumption. Over the past period, wage growth in Japan has clearly improved, but households remain affected by earlier price hikes and rising living costs, and the transmission from income improvements to consumption expansion has been relatively slow. If real wages continue to grow and gradually spur a recovery in household consumption, Japan's expansion structure may shift from its current reliance on external demand and government support to a more stable, private-demand-driven model.
BOJ meeting next week, GDP revision does not alter core dilemma
The Bank of Japan's policy board will convene its monetary policy meeting next week. From the BOJ's perspective, the upward revision of second-quarter GDP to 1.4% annualised growth, along with continued real wage increases, provides some support for the view that the economy can withstand further monetary policy normalisation. However, the data also presents clear constraints: private consumption is flat quarter-on-quarter, capital spending remains in decline, and overall domestic demand continues to weigh on GDP. Thus, the second preliminary GDP report does not signal an "overheating economy," but rather suggests that Japan's economy continues to expand modestly with an unbalanced growth base. For the BOJ, the key to its next policy decision will remain whether wage increases can sustainably transmit to service prices and household consumption, and whether underlying inflation can stabilise near the 2% target, rather than relying solely on the GDP revision from 1.1% to 1.4% annualised. Overall, this revision has improved the headline numbers for Japan's second-quarter economic growth without fundamentally changing its structure. The narrowing of the decline in business equipment investment was the main source of the upward revision, but private consumption remains stagnant, and domestic demand continues to make a negative contribution. While Japan's economy has grown for three consecutive quarters, whether it can genuinely achieve endogenous expansion driven jointly by wages, consumption, and corporate investment remains the most critical factor to watch in the coming quarters.