US Consumer Price Index Level (CPIAUCSL)
The US Consumer Price Index level (CPIAUCSL) from 2000 onwards. The headline US inflation gauge in level terms. Useful for visualising compounded inflation across decades, the 2021-2022 post-COVID acceleration, and the 2023-2026 normalisation. AUD-resident traders use CPI level to project real-AUD purchasing power on US-listed assets and to size USD-denominated holdings against multi-year inflation expectations. Live FRED data, recession-shaded.
Chart
Monthly seasonally adjusted CPIAUCSL. Linear scale. The slope of the curve is the inflation rate; visible slope changes mark inflation regime shifts.
What is the CPI level?
The Consumer Price Index measures the average change over time in the prices paid by urban consumers for a representative basket of consumer goods and services. The Bureau of Labor Statistics builds the basket from extensive household-spending surveys and prices it monthly across all major US metropolitan areas.
CPIAUCSL is the All Urban Consumers, Seasonally Adjusted series - the standard reference series used by the Federal Reserve, the Treasury, and almost all macro research. The index is anchored at 100 across the 1982-1984 average. Each new monthly reading is the price of the basket in that month divided by the 1982-1984 average price, times 100.
Why AU traders watch US CPI
- Fed reaction function. Monthly US CPI releases (typically 13th of the month, 8:30 ET) are the highest-vol macro events in financial markets. A 0.1 percent surprise above expectations can move the entire US rates curve by 5-10 basis points and the USD index by 0.3 percent. AUD/USD reacts proportionally. Set position size on AUD/USD ahead of US CPI prints.
- Real-return calculation on USD holdings. If you hold US-listed shares or US-denominated cash, the CPI level tells you how much real purchasing power has eroded across your holding period. A 6 percent USD nominal return when CPI rises 4 percent = 2 percent real return.
- Inflation-linked products. US TIPS (Treasury Inflation-Protected Securities) are indexed to CPI-U. Australian-resident traders accessing US TIPS via ASX-listed ETFs or US brokers should track CPI level directly to understand carry.
Methodology
- Source. FRED series CPIAUCSL (Consumer Price Index for All Urban Consumers, Seasonally Adjusted, monthly).
- Endpoint. Public fredgraph.csv (no API key required).
- Reference period. Index = 100 across 1982-1984 average.
- Recession shading. NBER-dated US recessions.
- Static-first. Seed file ships with quarterly anchors interpolated to monthly; fetch overwrites with live values.
Related tools
- CPI Inflation (YoY %) - the rate-of-change view; what the Fed actually targets.
- Core PCE Inflation - the Fed's preferred inflation gauge.
- Fed Funds Rate - the policy response to inflation.
- 30-Year Mortgage Rate - the housing transmission of policy.
- M2 Money Supply - the upstream liquidity variable.
Frequently asked questions
The Consumer Price Index for All Urban Consumers (CPIAUCSL) is an index measuring the average price level of a basket of goods and services purchased by urban US households. It is anchored at 100 across the 1982-1984 reference period. A current reading above 320 (early 2026) means the same basket costs about 3.2x what it cost in the early 1980s. The Bureau of Labor Statistics publishes the index monthly. CPIAUCSL is the seasonally adjusted version, the standard for time-series analysis.
They answer different questions. CPI YoY tells you how fast prices are accelerating or decelerating right now (the policy-relevant rate). CPI level tells you the cumulative purchasing-power erosion across time (the wealth-relevant level). For Fed-watching and short-horizon trading, YoY matters more. For long-term real-return calculations on USD-denominated assets, level matters more. Both are sourced here from the same underlying FRED CPIAUCSL series.
US CPI drives Fed policy expectations, which drives the entire US rates curve, which drives AUD/USD, which drives the AUD value of every USD-denominated asset an Australian holds. Direct linkages: high US CPI prints (e.g. the 9.1 percent YoY peak in June 2022) drive aggressive Fed hike expectations, push the USD higher, push AUD/USD lower, compress AUD-real returns on US holdings. Soft US CPI prints have the opposite effect.
No. The BLS updates the consumption basket every two years to reflect changing spending patterns. Major reweights happen periodically (e.g. the 2022 reweight). The methodology has shifted toward hedonic adjustments for tech goods and the inclusion of owners' equivalent rent for housing. Critics argue these adjustments understate true inflation; defenders argue they correctly account for quality improvements. The chart shows whatever the BLS currently publishes, with the same continuity FRED maintains.
Linear. The CPI level grows at a few percent per year, so a 26-year window (2000 to 2026) compresses comfortably on linear axes. Log scale becomes useful only for series that compound by orders of magnitude (M2 money supply, Bitcoin price). For CPI level, linear preserves the visual sense of acceleration and deceleration phases.
FRED series CPIAUCSL (seasonally adjusted monthly), fetched live on every build from the public fredgraph.csv endpoint. The build pipeline preserves the last-known-good snapshot if FRED is temporarily unreachable.
About the author
