WPI Price Escalation Calculator — Price Index Factor (PIF)

Index Factor Calculator

Commodities

Frequency

Assessment Month

Assessment Year

Show Index Values

Show Extrapolated Value

Show Back-interpolated Values (to 1920)

Beginning Month

Beginning Year

Latest available: Jul 2026. Will extrapolate up to the selected assessment period. The growth rate is measured on the Composite, from each commodity's earliest published period at or after the beginning month.

View calculation history

Select commodities and an assessment date, then click Calculate.

Index Factor = Assessment Date Index ÷ Index of the Period

This tool is provided for informational and analytical purposes. Users are advised to verify critical financial calculations against the official datasets and circulars published by the Office of Economic Adviser prior to finalising.