2002年-ECB欧洲央行_Price_level_convergence_and_competition_in_the_euro_area_11页_204kb

Summary: Price Level Convergence and Competition in the Euro Area

Core Content

This article discusses the extent of price level differences across euro area countries and explores the factors that contribute to these differences, emphasizing the role of competition in reducing price dispersion. It highlights the importance of market integration and the potential benefits of further reforms to enhance competition and price convergence.

Main Factors Behind Price Differences

• Law of One Price: In integrated markets with no transportation costs, prices of internationally traded goods should be the same across locations. However, empirical evidence shows this holds only for a few globally traded goods at the wholesale level.
• Non-tradable Goods and Services: Prices for these are determined by local supply and demand conditions. Differences in national income levels affect price levels, as explained by the Balassa-Samuelson effect.
  • Countries with higher productivity in the tradable sector tend to have higher wage levels and, consequently, higher prices for non-tradable goods.
  • This implies that higher-income countries generally have higher overall price levels.
• Macroeconomic Policies and Cyclical Positions: These can influence short-term price developments.
• Taxes and Regulations: Differences in indirect taxes (e.g., VAT, excise duties) and national regulations contribute to price level dispersion, especially for certain products like alcoholic beverages and tobacco.
• Transportation Costs and Cultural Preferences: These create natural barriers to trade and affect market conditions and prices.

Measuring Price Level Dispersion

• Price Level Indices: The Harmonised Index of Consumer Prices (HICP) is used to track price trends over time, while Purchasing Power Parities (PPPs) are used for cross-country comparisons.
• PPPs: These adjust prices to a common currency and reflect the relative cost of living in different countries.
• Data Sources: Eurostat and the OECD provide broad price level data, while specialized firms and industry associations offer more detailed and high-frequency data on specific products.
• Methodological Challenges: It is difficult to find identical products across countries, and local market conditions can distort comparisons.

Price Level Convergence Over Time

• Historical Trends: Price level convergence was more evident in the late 1980s and early 1990s, particularly for tradable goods, due to the implementation of the Internal Market Programme.
• Slowing Convergence: In the second half of the 1990s, convergence slowed, possibly due to the downward trend in inflation rates.
• Regional Price Dispersion: Even in integrated national markets, some price dispersion persists. Studies show that price dispersion is generally higher between countries than within them.
• Comparison with the US: In 1998, price level dispersion in the euro area was higher than in the US for most product categories, although it was narrowing. The higher dispersion in the US for non-tradable goods is attributed to the significant weight of housing prices in the US.

Effects of Competition on Price Levels

• Perfect Competition: In perfectly competitive markets, prices are kept low and efficient, with maximum welfare gains for the economy.
• Market Power: Most markets are not perfectly competitive, and firms may exert influence over prices through product differentiation, branding, and control of distribution networks.
• Impact of Increased Competition:
  • In the short term, price dispersion may increase due to the timing and nature of market liberalisation.
  • Over time, competition leads to cost reductions, efficiency gains, and downward pressure on prices.
• Empirical Evidence: Studies show that more intense competition increases efficiency and reduces price dispersion. Price adjustments are also faster in more competitive markets.

Policy Implications

• Internal Market Integration: The introduction of the euro has improved market integration by eliminating exchange rate uncertainty, reducing transaction costs, and increasing price transparency.
• Need for Further Reforms: Despite these improvements, barriers to trade and competition still exist. Additional efforts are required to adapt regulations and enhance competition in product markets.
• Monetary Policy: Well-integrated product markets facilitate the implementation of stability-oriented monetary policy by the European Central Bank (ECB).
• Challenges for Policy-Makers: Adapting competition laws and policies to new market conditions is a constant challenge, especially as markets evolve due to technological advances, trade liberalisation, and structural reforms.

Key Findings

• Price level dispersion in the euro area is still higher between countries than within them, indicating room for further market integration.
• The Balassa-Samuelson effect and national income levels are key determinants of price differences.
• The introduction of the euro has helped reduce price dispersion, but more reforms are needed to fully realize the benefits of the Internal Market.
• Empirical studies support the notion that increased competition leads to efficiency gains and downward pressure on prices.
• Price convergence is not a guaranteed outcome of market integration, and policy interventions are necessary to ensure effective competition.

Conclusion

The euro area has made progress in integrating markets and reducing price level dispersion, but significant differences remain. Continued efforts to liberalize markets, reduce trade barriers, and improve competition are essential to achieving further convergence and enhancing the effectiveness of monetary policy.