Historical US Inflation Rates
From wartime spikes to the Volcker squeeze to the 2022 surge, a century of US inflation data shows which planning assumptions are reasonable and which are fantasy.
US inflation has averaged about 3 percent over the last century, but the path was wild: double-digit spikes in the 1970s and early 1980s, near-zero readings in 2015, and an 8 percent surge in 2022. Planning at 2 to 4 percent covers most historical decades; assuming 0 percent or 8 percent forever does not.
The long-run average
Across the last 100 years, US consumer price inflation has averaged roughly 3 percent a year. But that average hides enormous variation: the number has touched double digits and flirted with zero, sometimes within a few years of each other.
The practical lesson is that 3 percent is a reasonable central planning assumption, not a prediction. Real decades deliver 2 percent, 4 percent, or 8 percent, and your plan should survive the range.
The 1970s and the Volcker squeeze
Oil shocks and loose policy drove inflation above 13 percent by 1980. Workers demanded cost-of-living raises, businesses raised prices to cover them, and expectations embedded themselves. Breaking the cycle required Fed Chair Paul Volcker to push interest rates past 19 percent, triggering back-to-back recessions.
The episode is why central banks now guard credibility so fiercely. Once the public expects high inflation, only painful policy restores trust, and the 1970s show how long the pain lasts when credibility is lost early.
The great moderation and the quiet 2010s
From the mid-1980s through 2019, inflation mostly sat between 1 and 3 percent, and the 2010s were strikingly calm, often undershooting 2 percent despite massive monetary stimulus. Globalization, technology, and aging demographics all pushed downward.
That calm trained a generation to treat inflation as solved. Anyone who built lifetime financial plans in 2019 assuming 1.5 percent forever learned otherwise in 2021.
The 2021-2022 surge
Pandemic stimulus, supply chain snarls, and then energy shocks from war pushed US inflation to about 9 percent in mid-2022, the highest in 40 years. The Federal Reserve raised rates from near zero to over 5 percent in about 16 months, the fastest tightening in decades.
Inflation then fell back toward 3 percent without the severe recession many feared, a historically unusual soft landing. The open question is whether 2 percent is restored durably or whether the economy settles structurally higher.
What history says about your assumptions
Use 2 to 3 percent as your base case for general planning, 4 to 5 percent for costs like college and health care that outrun the average, and stress-test at 6 percent-plus to see where your plan breaks.
And remember the asymmetry: planning for 4 percent when 2 percent arrives costs you some upside; planning for 2 percent when 5 percent arrives can break a retirement. Conservative inflation assumptions are cheap insurance.
Skip the arithmetic
Apply any historical rate to your own numbers with the free inflation calculator.
Inflation history
What was the highest US inflation rate?
Depending on the index, US inflation peaked around 23 percent in 1920 after World War I. In the modern CPI era, the peak was near 14.8 percent in March 1980. The pandemic-era peak reached about 9.1 percent in June 2022.
What is the average US inflation rate?
About 3 percent annualized over the last 100 years, and closer to 2.5 percent since 2000. The Federal Reserve's target is 2 percent measured by the PCE price index, which tends to run slightly below CPI.
Will inflation go back to 2%?
Inflation fell from about 9 percent in 2022 toward 3 percent, but the last mile has been slow because housing and services prices adjust gradually. The Fed projects a return near 2 percent, but history counsels treating that as a forecast with wide error bars, not a promise.