Laspeyres-type index

Definitions over time (1)

09/01/2025 – today applies on 11/11/2026 Article 2, Regulation (EU) 2016/792 Scope: Whole act

For the purposes of this Regulation, the following definitions apply:

$$p^{0,t} = \sum \frac{p^{t}}{p^{0}} \cdot \mathrm{w}^{0,\mathrm{b}}$$ ‘Laspeyres-type index’ means the price index that measures the average change in prices from the price reference period to a comparison period using expenditure shares from a period prior to the price reference period, and where the expenditure shares are adjusted to reflect the prices of the price reference period. A ‘Laspeyres-type index’ is defined as: The price of a product is denoted by p, the price reference period is denoted by 0, and the comparison period is denoted by t. Weights (w) are expenditure shares of a period (b) prior to the price reference period, and are adjusted to reflect the prices of the price reference period 0;

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