If inflation falls but remains positive, the average price level is still rising—just more slowly. That does not undo earlier increases. Your own bills can rise or fall differently from the average. [1] [2]
The rate is not the bill
Imagine the same grocery basket costs $100 at the start. Its price rises 8% in the first year, then 3% in the second. Here is the arithmetic—not actual grocery-price data:
| Point in time | Change from prior year | Basket price |
|---|---|---|
| Starting point | — | $100.00 |
| After year one | +8% | $108.00 |
| After year two | +3% | $111.24 |
The second increase is applied to $108, not the original $100. The total increase is 11.24%, not 11%.
The inflation rate for this example fell from 8% to 3%. The basket did not become cheaper. A slower increase is disinflation; a sustained fall in the overall price level is deflation. Individual prices can fall even while the overall price level rises. [1]
And at zero inflation? The average price level stops increasing over the measured period. It does not magically return to an earlier price level.
The national average is not your household
The Consumer Price Index, or CPI, measures average price change for a basket of goods and services purchased by urban consumers. It is a price-change measure—not a complete measure of everything affecting living standards. [2] [3]
BLS cautions that CPI need not match any particular household. Different spending patterns mean different exposure to changing prices. A household spending heavily on one rising category can face more inflation than the average; another can face less. [2]
Our practical interpretation: a national statistic can be accurate while your own budget still feels brutal. “The average improved” and “I am still struggling” are not contradictory statements.
A price increase needs an explanation, not a villain audition
A price index tells us what changed. Identifying why requires separate evidence.
For a historical example, Adam Shapiro's June 2022 San Francisco Fed analysis attributed elevated U.S. personal consumption expenditures (PCE) inflation to both supply and demand factors, with a remaining portion classified as ambiguous. It used a statistical method based on price and quantity movements. It was not a measurement of today's economy, and PCE is a different index from CPI. [4]
That is a more defensible starting point than claiming every price rose for the same reason. Our editorial approach is to ask which product, which place, which period, and what evidence distinguishes the competing explanations.
What about corporate profits?
They deserve scrutiny. But a claim about a company's pricing is not automatically a finding about economy-wide inflation.
In a May 2024 analysis, Sylvain Leduc, Huiyu Li and Zheng Liu found that estimated markups rose in some industries, including petroleum and motor vehicles, while aggregate markups were broadly flat. They concluded that markup changes were not a main driver of the inflation rise and fall in the period they studied. [5]
This is one dated research result with a particular method—not a verdict on every company, every market or every later period. It does not establish that market concentration caused higher margins.
Affordability is the question that matters
Return to the imaginary grocery basket. If the money available to buy it stayed at $100 while its cost reached $111.24, the shortfall would be $11.24. A lower second-year inflation rate did not close that gap.
If the available budget instead rose to $111.24, it could buy the same basket again. That is a simple illustration of purchasing power, not a claim that wages have caught up for everyone.
Our bottom line: lower positive inflation slows further price increases. Whether life becomes more affordable also depends on income, the particular things you need to buy, and your other obligations. A smaller inflation number is not, on its own, a repaired household budget.
Sources and methodology
- St. Louis Fed: Inflation, Disinflation and Deflation, August 23, 2023. Definitions and the distinction between average and individual prices.
- BLS: CPI frequently asked questions. CPI scope and household differences.
- BLS: CPI concepts. Price levels, price changes and measurement limits.
- Shapiro: How Much Do Supply and Demand Drive Inflation?, June 21, 2022. Historical, model-based PCE analysis.
- Leduc, Li and Liu: Are Markups Driving the Ups and Downs of Inflation?, May 13, 2024. Findings are specific to the study's method and period.
Calculations: 100 × 1.08 = 108; 108 × 1.03 = 111.24; (111.24 ÷ 100 − 1) × 100 = 11.24%. The basket is fixed for this teaching example; this is not a replication of the full CPI methodology.
Interpretation and limits: The budget examples and editorial conclusions are our analysis. This article does not establish current inflation, real-wage growth, or the cause of a particular price increase. Federal Reserve research articles express their authors' analysis, not necessarily the institution's official position.
Review: Sources checked September 26, 2026, with AI assistance. Historical study dates are not current-data dates. Read our review standard.
Correction history
Specified that inflation must remain positive for average prices to keep rising; clarified that individual prices can fall independently; labeled the grocery example; removed unsupported claims about buying frequency, market concentration, housing and grid remedies; and corrected the claim that lower inflation necessarily prevents an affordability gap from widening. Added dated research, source links and consistent reading-time estimates.