The Structure of Price Hikes — Why Only Food Keeps Rising

Why Food Prices Stand Out

2025 CPI Change by Major Category (YoY %)

Food

+6.8%

Utilities

+3.6%

All Items

+3.2%

Furniture & Household

+2.7%

Transport & Comm.

+2.7%

Clothing & Footwear

+1.5%

Culture & Recreation

+1.1%

Housing

+1%

4 Structural Factors Driving Food Prices

🌾Food self-sufficiency 38%

60% calorie dependency on imports

💴Weak yen (~¥150/$)

Import costs directly passed to prices

🚛Rising logistics costs

2024 problem: severe driver shortage

📦20,609 items raised prices

TDB survey (2025 full year)

"Wages are supposed to be rising, so why doesn't grocery shopping feel any easier?" — A recurring sentiment on social media in 2025

Every trip to the supermarket brings a growing sense of sticker shock — and the data confirms the feeling. The overall Consumer Price Index for 2025 rose +3.2% year-on-year, but among the ten major expenditure categories, "Food" climbed +6.8% — more than double the headline figure. Housing rose just +1.0%, and transport & communication +2.7%. Food prices stand conspicuously alone.

According to Teikoku Databank, a total of 20,609 food and beverage items were subject to price increases in 2025. That is a 64.6% increase from the 12,520 items in 2024, making it the second-largest wave since the 32,396 items in 2023. By category, "seasonings" led with 6,221 items, followed by "alcoholic and non-alcoholic beverages" at 4,901. The average price increase per item was 15%.

The upward trend in food prices is not new — it began around 2022 — but shows no sign of abating. Tracking the Consumer Price Index on a monthly basis, food (excluding fresh food) ran at +5% to +8% year-on-year throughout most of 2025. The "wave of price hikes" is no longer temporary; it is becoming a structural fixture.

Food Self-Sufficiency at 38% — The Vulnerability of Import Dependency

The primary reason Japanese food prices react so sensitively to global cost fluctuations is the country's heavy reliance on imports for food supply. According to the Ministry of Agriculture, Forestry and Fisheries (MAFF), Japan's calorie-based food self-sufficiency rate was 38% in FY2024, unchanged for four consecutive years. In other words, over 60% of the calories consumed by the Japanese population depend on overseas sources.

Under this structure, exchange rate fluctuations translate directly into food price changes. The rapid yen depreciation since 2022 (from the 130-yen range to the 150-yen range per dollar) has substantially inflated the yen cost of key imported ingredients — wheat, soybeans, corn, and cooking oil. As nippon.com analysis points out, even when import volumes remain constant, yen depreciation alone raises procurement costs for food products.

Three Channels of Cost-Push Inflation

The rise in food prices is not caused by any single factor but results from multiple cost channels operating simultaneously. Unlike "demand-pull inflation," where economic recovery and rising demand push prices up, cost-push inflation drives prices higher even without growing demand — and that is exactly the structure at work here.

Channel 1 — Exchange rates and raw materials. Beyond yen depreciation, international grain and cooking oil prices remain elevated. The government's wheat selling price has been raised in stages since 2022, rippling into downstream products such as bread, noodles, and confectionery.

Channel 2 — Logistics costs. The "2024 logistics problem" — the overtime cap for truck drivers that took effect in April 2024 — has simultaneously constrained transport capacity and pushed up costs. The Japan Trucking Association estimates that without countermeasures, commercial truck transport capacity could fall short by 34.1% by 2030. Food products, being bulky relative to their unit price, are especially susceptible to logistics cost pass-through.

Channel 3 — Energy costs. Food manufacturing, storage, and distribution are all energy-intensive. Frozen food production, refrigerated warehousing, and temperature-controlled transport — all see energy price increases reflected directly in costs.

The Stop-and-Start of Energy Subsidies

The government launched the "Electricity and Gas Price Adjustment Subsidy" in January 2023, offering up to ¥7/kWh in electricity subsidies. However, as the Agency for Natural Resources and Energy website shows, this was never a permanent program. It has gone through repeated cycles of introduction, termination, and resumption.

After the original program ran from January 2023 to May 2024, there followed the "Beat the Heat Emergency Support" from August to October 2024, a resumption from January to March 2025, another round from July to September 2025, and yet another resumption from January to March 2026. The subsidy's impact was significant — reducing a typical household's monthly electricity bill by roughly ¥2,000. However, each time the subsidy ends, electricity bills jump; each time it restarts, they fall. This pattern raises questions about the program's sustainability and makes household budget planning difficult.

The same applies to food manufacturers. Factory electricity costs fluctuate dramatically depending on subsidy availability, making it hard to hold product prices steady. Price increases timed to subsidy termination have become routine.

SME Price Pass-Through — Companies That Can and Those That Cannot

Whether a company can pass on cost increases depends heavily on its size and position in the supply chain. According to JILPT, the labor cost pass-through rate reached 62.4%, up 17.3 points from the prior year. But this means roughly 40% of cost increases are still being absorbed by companies.

The 2025 White Paper on Small and Medium Enterprises shows that pass-through rates decrease as one moves deeper into the supply chain. While Tier 1 suppliers achieve pass-through rates exceeding 50%, Tier 4 and below manage only about 40%. Companies that could fully pass through cost increases at the deepest tiers represent a mere 15% or so.

This structure is particularly pronounced in the food industry. Processors purchasing raw materials cannot easily raise prices charged to major manufacturers, who in turn face pressure from private-label competition at the retail level. The "price hikes" visible to consumers represent only the portion of cost increases that made it through the entire chain — behind every visible increase lies invisible cost absorption by companies cutting into their margins.

Engel Coefficient at 28.6% — What a 44-Year High Means

As reported by the Nikkei, the 2025 Engel coefficient reached 28.6%, the highest level since 1981 — a 44-year record.

The Engel coefficient can rise through two mechanisms: food prices going up, or non-food spending being cut. In 2025, both occurred simultaneously. As food prices climbed +6.8% year-on-year, households cut back on clothing, entertainment, and other discretionary spending to absorb the increase. As a result, food's share of total consumption expenditure rose.

This figure is a statistical expression of "retreat from affluence." If food prices continue to rise while incomes stagnate, households progressively lose flexibility in their budgets.

International Comparison of the "Food-Only Inflation" Structure

Japan's CPI increase appears moderate compared to Western economies. The 2025 headline CPI of +3.2% is comparable to the United States at around +3.0% and the Eurozone at approximately +2.5%. But the composition tells a different story about Japan's uniqueness.

In the West, energy prices spiked in 2022 and then moderated through 2024, with food prices following suit. In Japan, however, food price inflation has been prolonged. Dai-ichi Life Research Institute analyst Yoshitaka Shinke noted that as of November 2025, uncertainty about the food price outlook persisted.

A key underlying factor is the difference in food self-sufficiency rates. France's rate is approximately 125% (calorie basis), and the United States around 130%. Countries that can feed themselves see limited impact from currency fluctuations on food prices. Other factors also play a role — the EU's Common Agricultural Policy (CAP) and U.S. agricultural subsidies help stabilize food prices beyond self-sufficiency alone. Nevertheless, Japan's 38% stands out as exceptionally low among developed economies (comparable only to South Korea at roughly 35%), embedding a structural vulnerability where every currency movement hits the dinner table.

Are Wages Keeping Up?

With food prices rising this sharply, the natural question is whether wages are keeping pace. The 2025 spring wage negotiations (shunto) delivered an average wage increase of 5.46%, the highest in 33 years. However, the benefits have not been evenly distributed. Large corporations (unions with 300+ members) achieved 5.63%, while SMEs (unions with fewer than 300 members) reached 5.15%. Non-regular workers see even less benefit from these negotiations.

Tracking real wage trends, real wages in 2025 hovered near flat year-on-year, with nominal wage gains largely offset by inflation. Even with nominal pay increases, a +6.8% rise in food CPI leaves limited room for real purchasing power to improve. Food price increases, in particular, weigh most heavily on lower-income households. As the Engel coefficient demonstrates, food spending is "non-discretionary" — making food inflation effectively a regressive burden that hits the least affluent the hardest.

Every time a "price hike" story breaks, the conversation turns to personal budgeting tips and household austerity measures. These matter, but the real issue is structural. A food supply structure dependent on 38% self-sufficiency, high sensitivity of food prices to exchange rate movements, power asymmetries that prevent SMEs at the end of supply chains from passing through costs, and policy instability over whether to make energy subsidies permanent or phase them out — these factors compound to produce the phenomenon of "only food prices going up."

Looking ahead to 2026, Teikoku Databank projects a decline in the number of price-increase items. But this does not mean prices will fall. It means already-elevated prices are becoming entrenched, while the frequency of new increases diminishes. Food price levels are likely to remain high.

The sticker shock at the supermarket checkout is not an individual perception problem; it is a problem with Japan's food supply structure itself. Whether to change that structure or adapt to it as a given — either path requires first understanding the structure accurately.

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References

Related Books

Stagflation: The Economic Crisis Hitting Everyday Life by Keiichi Kaya — An accessible guide to why prices can rise without demand growth, and how it erodes household finances. A useful companion for understanding the mechanics of cost-push inflation.

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