Japan’s Consumer Sentiment Sours as Energy Costs Surge and Stock Volatility Amplifies the "Negative Wealth Effect"
A new report from Itochu Research Institute, published on April 9, 2026, reveals a sharp deterioration in Japanese consumer sentiment for March 2026, driven by a spike in energy prices and geopolitical instability in the Middle East. Analysts warn that the impact of stock market volatility on private consumption—the "wealth effect"—is becoming more pronounced than in previous economic cycles.
Consumer Confidence Takes a Hit
The Consumer Confidence Index (CCI) for general households plummeted to 33.7 in March, a significant 6.0-point drop from February’s 39.7. This reversal ends a recovery trend that began in early 2025. The primary culprit is the "overall livelihood" indicator, which fell by 9.2 points.
The decline is largely attributed to the surge in crude oil prices following the escalation of tensions between Iran, Israel, and the United States. According to the Agency for Natural Resources and Energy, the national average price for regular gasoline jumped from 154.7 yen per liter in mid-January to 190.8 yen by mid-March. While gasoline accounts for only 1.82% of the Consumer Price Index (CPI) basket, its psychological impact is outsized, fueling fears of broader inflationary pressure.
Downward Pressure on Wage Growth
The "income growth" indicator also saw a decline, falling 2.0 points to 40.2. While the Japanese Trade Union Confederation (Rengo) reported a 5.09% weighted average wage increase in its third round of spring wage tallies (Shunto), this is a deceleration from the 5.42% seen at the same point in 2025.
Historically, final wage tallies tend to settle roughly 0.2 percentage points lower than initial reports. Analysts note that with the current geopolitical uncertainty, there is a risk that the final 2026 wage hike could slip below the critical 5% threshold, potentially cooling consumer spending further this spring.
The Growing "Negative Wealth Effect"
A key takeaway from the report is the evolving relationship between the stock market and private consumption. After hitting a peak in the 58,000-yen range in late February, the Nikkei 225 fell to the 51,000-yen range by late March due to the Iran crisis.
Itochu Research highlights that the "negative wealth effect"—where a drop in asset values leads to reduced spending—has intensified. Historically, this effect was limited in Japan due to low levels of stock ownership among households. However, the expansion of the NISA (Nippon Individual Savings Account) program has led to a broader segment of the population holding equities.
Current estimates suggest that a 10% decrease in the real value of household stock and investment trust holdings now correlates with a 0.2% decline in real private consumption. While the market remains up on a year-on-year basis, the sudden retreat from February highs is expected to act as a significant headwind.
Outlook
The report offers a cautious but potentially optimistic outlook. Following the announcement of a two-week ceasefire between the U.S. and Iran on April 7, stock markets have begun to recover. If the geopolitical situation stabilizes, the research suggests the downturn in consumer sentiment may be short-lived. However, for the immediate spring season, private consumption is expected to remain soft as households grapple with high energy costs and a more volatile asset environment.
Norbert Gehrke
