A price cap is a policy tool that cushions the spread of price shocks in an emergency and keeps economic activity going. It can be expected to help anchor inflation expectations, blunt the incentives for precautionary buying and hoarding, and make costs more predictable for firms and the public sector, while buying a critical window in which to secure alternative sources of supply and prepare fiscal measures.

A comparison of major economies shows both direct price management and subsidy-based policies cushioning price increases. From March to August 2026, energy prices in South Korea, China, and Thailand rose an average of 15 percent year on year, 9.9 percentage points less than the 24.9 percent recorded in the United States and Germany, while in Japan, which stabilized prices through subsidies, they fell by an average of 4.5 percent. Korea’s results have been relatively good, less because it eliminated price increases than because it kept them from widening further. From August to September, the year-on-year rise in Korea’s gasoline prices held almost steady, moving from 11.8 to 11.9 percent, while the rates in Thailand, the United States, and Germany widened again over the same period. Exchange rates, taxes, and the lag before price changes pass through all play a part, however, so care is needed before reading the observed gaps between countries as the net effect of the price cap.

Going forward, policy should combine temporary cushioning, targeted support, supply stability, and conditional normalization, rather than expand price ceilings across the board. That means adjusting the caps to reflect international prices and supply and demand conditions, settling losses transparently, targeting support at vulnerable groups and hard-hit industries, and diversifying supply and improving efficiency at the same time. The policy’s performance should be judged not on price stability alone but on the full picture: the net burden on households, real output and exports in industry, supply stability, and the fiscal burden.

JEL classification: Q48, Q41, E31, E64, L71