CPI-U (Consumer Price Index for All Urban Consumers)

The CPI-U is the headline US inflation index, computed monthly by the Bureau of Labor Statistics from a basket of approximately 80,000 goods and services priced in 75 urban areas representing about 93% of the US population. The index covers food, energy, housing, transportation, medical care, education, recreation, and other consumer categories — weighted by household spending patterns surveyed in the Consumer Expenditure Survey. The index uses 1982-84 = 100 as the base period; the May 2026 CPI-U index of ~310 means consumer prices in 2026 are roughly 3.1× what they were in 1982-84.

Multiple federal inflation-indexing provisions reference CPI-U. The Internal Revenue Service uses CPI-U over a specified window each year to compute the Cost of Living Adjustment (COLA) applied to retirement plan contribution limits (401(k), IRA, HSA, etc.), tax bracket thresholds, standard deduction, and dozens of other dollar amounts. The Social Security Administration uses a related but different index (CPI-W, a subset focused on wage earners) for Social Security benefit COLA. Treasury Inflation-Protected Securities (TIPS) coupons adjust based on CPI-U. The I-bond variable rate component resets every May and November based on the trailing 6-month CPI-U change.

Two CPI variants are often confused: headline CPI-U (the all-items measure) and core CPI-U (excluding food and energy categories which are volatile due to supply shocks). The Federal Reserve and most monetary-policy commentary weight core CPI more heavily than headline because food and energy prices respond to non-monetary forces (oil shocks, agricultural disruptions). For consumer-facing inflation impact, the headline number matters more because it captures the full price experience of households.

BLS publishes CPI-U on a fixed schedule the second or third week of each month, covering the prior month's data. The full schedule for the calendar year is published a year in advance at bls.gov/schedule/news_release/cpi.htm. The release moves bond yields and Fed rate expectations immediately if the print surprises consensus by more than 0.1-0.2 percentage points. For savings-account holders, the release has 2-6 week implications for HYSA APYs and Treasury MMF yields as bank cost-of-funds reprices. Reading each CPI release with the framework in our [CPI release framework piece](/actualidad/cpi-release-impact-savings/) converts the data into operational savings decisions.

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