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View Weekly PageAnswer: CPI includes services and tracks retail inflation affecting consumers, while WPI tracks only physical goods at the wholesale level
The most critical structural difference is that the WPI completely ignores the services sector, which constitutes over 50% of India's GDP. The CPI captures retail price changes for both goods and services (like healthcare, education, and housing). Furthermore, since 2014, the RBI uses CPI (Combined), not WPI, as the official anchor for its inflation-targeting mandate.