Glossary term
Import Price Index (MPI)
The Import Price Index measures changes in prices paid for goods and selected services imported into the United States.
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What Is the Import Price Index?
The Import Price Index, or MPI, measures changes in prices paid for goods and selected services imported into the United States. It is produced by the Bureau of Labor Statistics as part of the Import/Export Price Indexes program.
The MPI helps show whether foreign-sourced goods and services are becoming more or less expensive for U.S. buyers. It is an inflation and trade-price indicator, not a complete measure of consumer prices or total import spending.
Key Takeaways
- The Import Price Index tracks price changes for U.S. imports.
- It is part of the BLS International Price Program.
- Import prices can affect inflation, business input costs, retail pricing, and trade analysis.
- The index can move because of commodity prices, exchange rates, supply chains, tariffs, and global demand.
- The MPI measures price change, not import volume or total import value.
How the MPI Works
The BLS measures price changes for imported goods and selected services using categories tied to international trade. A rising import price index indicates that measured import prices increased relative to the base period. A falling index indicates lower import prices.
Import prices can affect businesses before they reach consumers. A manufacturer using imported components may see margin pressure when import prices rise. A retailer importing finished goods may decide whether to absorb higher costs or raise prices.
What the Index Can Signal
Movement | Possible interpretation |
|---|---|
Rising import prices | Higher foreign input costs, commodity pressure, tariff effects, or currency changes. |
Falling import prices | Lower global prices, weaker demand, supply improvement, or dollar strength. |
Energy import prices rising | Potential fuel-cost pressure for consumers and businesses. |
Nonfuel prices rising | Broader imported-goods inflation pressure. |
Inflation and Business Context
Import prices can feed into inflation when higher foreign costs pass through to producer prices or consumer prices. The pass-through is not automatic. It depends on exchange rates, contracts, inventories, competition, margins, and how much imported content a product contains.
For businesses, the MPI can help explain cost pressure. A company may report lower gross margin because imported materials rose faster than selling prices. Another company may benefit when import prices fall and input costs ease.
MPI and Exchange Rates
Exchange rates are a major part of import-price analysis. A stronger U.S. dollar can make foreign goods cheaper in dollar terms, while a weaker dollar can raise import costs. The effect depends on invoicing currency, supplier contracts, and competitive behavior.
That is why import prices are often read with the dollar, commodity indexes, tariffs, freight costs, and supply-chain data. A single import price number can reflect several forces at once.
Interpreting the Data
The MPI does not show how much the United States imported. Prices can rise while volumes fall, or prices can fall while import volumes increase. Analysts need trade volume and value data to understand total spending.
The index can also be volatile when energy or commodities swing. A headline import-price move may say more about oil or industrial materials than about the full consumer-goods pipeline. Core or nonfuel views can sometimes give a cleaner read.
Category detail is often more useful than the headline alone. A retailer importing apparel, a manufacturer buying semiconductors, and a utility exposed to fuel costs may all experience different import-price pressures. Matching the index category to the business model keeps the signal from becoming too broad or too abstract.
The Bottom Line
The Import Price Index measures price changes for U.S. imports. It helps analysts read imported inflation, business input costs, currency effects, and terms of trade, but it should be interpreted with volumes, exchange rates, and commodity context.