Methodology: Canada

Official data verified · CPI (Statistics Canada) · Annual average · Not seasonally adjusted · Data through September 2026 (fetched 2026-11-02) · Table 18-10-0004-01, All-items

The data

All Canadian figures come from the Consumer Price Index published by Statistics Canada (Table 18-10-0004-01, All-items; base period 2002=100). Statistics Canada Open Licence — data may be reproduced with attribution to Statistics Canada. This site is not affiliated with Statistics Canada.

Basis

Calculations use the not-seasonally-adjusted index, as published. Canada's CPI has been published monthly since 1914. Component indexes start later (food and rent from 1949, shelter from 1978); pages only show components for years where they exist.

The formula

Adjusted amount = amount × (index at end ÷ index at start). Formula v1.0 — annual-average CPI, NSA (per-country basis on each methodology page). Year pages compare annual averages (the mean of a year's published values); the current year's average covers only the periods published so far and is labeled partial. The change in the price level and the change in purchasing power are stated as two separate numbers, because they are not the same: if prices rise 100%, purchasing power falls 50%.

See also the general methodology and the data updates log.