2021 was the year inflation stopped being background noise. Consumer prices rose 4.7% on average for the year, and the pace kept building as the months went on: by December, the 12-month rate had reached 7.0%, the highest since 1982. The proximate cause was a supply chain that could not keep up with a fast-reopening economy. A global semiconductor shortage choked new car production and pushed used vehicle prices up by more than a third, the single largest line item in the year’s inflation math. Lumber, appliances, and shipping capacity told versions of the same story: demand snapped back faster than factories, ports, and truckers could handle it. Washington added fuel in March with the $1.9 trillion American Rescue Plan, on top of the relief already in the pipeline since 2020. For most of the year, the Federal Reserve called the price surge “transitory,” a temporary reopening effect expected to fade on its own, and held its policy rate near zero. By November, with inflation still climbing, the Fed reversed course and began winding down its bond purchases, the first step toward the rate hikes that would follow in 2022. Gas averaged $3.01 a gallon for the year, up from about $2.17 in 2020, while the federal minimum wage held at $7.25, unchanged since 2009. In hindsight, 2021 reads as the hinge year: the point where “transitory” inflation became the multi-year fight the Fed spent the next two years trying to win.
Year in review
Inflation in 2021
The U.S. inflation rate in 2021 was 4.7% (CPI: 270.97). Convert 2021 dollars to today →
4.7% 2021 inflation rate
3.8% 2020s average
7.0% peak month (Dec)
1.4% lowest month (Jan)
What things cost in 2021
| Median household income | $70,784 |
|---|---|
| Gas (per gallon) | $3.01 |
| Median home price | $397,500 |
| First-class stamp | $0.58 |
| Federal minimum wage | $7.25 |
What $100 from 2021 was worth later
| In 2026 | $122 |
|---|
Inflation in 2021, month by month
| Month | CPI-U | 12-month rate |
|---|---|---|
| January | 261.582 | 1.4% |
| February | 263.014 | 1.7% |
| March | 264.877 | 2.6% |
| April | 267.054 | 4.2% |
| May | 269.195 | 5.0% |
| June | 271.696 | 5.4% |
| July | 273.003 | 5.4% |
| August | 273.567 | 5.3% |
| September | 274.31 | 5.4% |
| October | 276.589 | 6.2% |
| November | 277.948 | 6.8% |
| December | 278.802 | 7.0% |
Economic events of 2021
- Inflation accelerates all year, ending December at a 7.0% pace, the fastest since 1982 The annual average CPI rose 4.7% for the year, but the trend inside the year mattered more than the average: monthly readings kept climbing, from 1.4% year-over-year in January to 7.0% by December. Pandemic-snarled supply chains meeting a fast reopening in demand drove the acceleration.
- Congress passes the $1.9 trillion American Rescue Plan Act in March The third and largest pandemic relief package sent $1,400 payments to most adults, extended unemployment benefits, and funded state and local governments. Combined with the relief already disbursed since 2020, it added to a wave of household savings and demand that economists later cited as one driver of the year's inflation.
- A global semiconductor shortage sends used vehicle prices up more than a third Chipmakers had cut automotive orders early in the pandemic and could not restore them fast enough once demand rebounded, so new car production stayed constrained all year. Buyers shifted to the used market, and used car and truck prices became one of the single largest contributors to the year's CPI increase.
- The Fed calls the inflation "transitory," then reverses and announces tapering in November Federal Reserve officials spent most of the year describing the price surge as a temporary reopening effect that would fade on its own, and held the policy rate near zero. By November, with inflation still climbing, the Fed began scaling back its bond purchases, the first step toward the rate hikes that followed in 2022.
Sources: U.S. Census Bureau, Current Population Survey (income); U.S. Census Bureau, New Residential Sales (home price); U.S. Energy Information Administration (gasoline); U.S. Department of Labor (minimum wage); USPS historical rates.
Inflation figures: U.S. Bureau of Labor Statistics, CPI-U annual averages. See the methodology.