Four01 Official data, verified

CPI inflation, 12-month

U.S. Bureau of Labor Statistics · monthly · 1,351 observations

3.4%
As of Aug 2026

±0.0 pp vs prior month+0.5 pp vs a year earlier

Percent

Source: U.S. Bureau of Labor Statistics. 12-month % change computed from CUUR0000SA0 index levels. Not seasonally adjusted (the basis BLS uses for its headline 12-month change).

About this series

What it measures

How much the prices of a broad basket of goods and services bought by urban consumers changed over the past 12 months. It uses the not seasonally adjusted index, which BLS uses for its headline 12-month change.

Why it matters

It is the most widely followed U.S. inflation gauge and is used to adjust Social Security benefits, tax brackets and many contracts.

Common misreads

A lower inflation rate shows prices rising more slowly, not falling. The 12-month figure moves with what happened a year ago as well as with this month's change.