What Drives Price Increases: Inflation Analysis for 2020–2026
Which CPI Categories Rose the Most From 2020 to 2026
This page ranks major U.S. consumer price groups by cumulative price increase from January 2020 to May 2026. It uses Bureau of Labor Statistics CPI-U seasonally adjusted index levels and converts each index change into a percent increase.
The table shows where consumer prices rose most within the CPI basket. It is not a causal model of inflation and it is not a contribution-to-CPI table. A group can rise quickly without being the largest contributor to overall inflation if its weight in household spending is smaller.
Coverage: 17 CPI major aggregates and sub-aggregates. Unit: cumulative percent change. Direction: higher means a larger price increase. Source: Bureau of Labor Statistics CPI records and May 2026 CPI publication materials.
Energy commodities had the largest increase among the 17 CPI groups in this comparison.
Education and communication had the lowest cumulative increase in this table.
All items rose 28.9% from January 2020 to May 2026 using the BLS CPI-U seasonally adjusted index.
Each row uses a January 2020 value and a May 2026 value from BLS CPI records.
Overview: the fastest-rising parts of the CPI basket
Main takeaway
The largest price increases in this table were energy commodities, energy, fuels and utilities, private transportation and transportation services. These areas rose faster than headline CPI between January 2020 and May 2026.
What the table does and does not show
This is a price-change intensity comparison. It compares movement within each index, not the share each group contributed to total inflation and not the full set of economic causes behind inflation.
The 2020–2026 inflation period was uneven across the consumer basket. Energy-linked prices moved the most in percentage terms, while transportation, food, housing and shelter also rose enough to shape everyday household experience.
The 17 rows cover major CPI aggregates and sub-aggregates that have BLS values at both the start and end months. They are useful for a clear overview, but they should not be added together because broad aggregates and narrower sub-aggregates can overlap.
The calculation is simple: May 2026 index divided by January 2020 index, minus 1, multiplied by 100. Values are ranked before rounding, so close entries such as rent of shelter and food and beverages keep their correct order.
Top 10 CPI groups by price increase, 2020–2026
Energy commodities and the broader energy index sit at the top because energy prices can move sharply over short periods. Transportation groups also rank high, showing how fuel, vehicles, repairs, insurance and services can make inflation feel stronger for households that drive often.
Top 10 cumulative CPI increases from January 2020 to May 2026
| Rank | Entity | Value | BLS series |
|---|---|---|---|
| 1 | Energy commodities | 57.2% | CUSR0000SACE; Jan 2020–May 2026. |
| 2 | Energy | 53.8% | CUSR0000SA0E; Jan 2020–May 2026. |
| 3 | Fuels and utilities | 44.7% | CUSR0000SAH2; Jan 2020–May 2026. |
| 4 | Private transportation | 40.1% | CUSR0000SAT1; Jan 2020–May 2026. |
| 5 | Transportation services | 39.8% | CUSR0000SAS4; Jan 2020–May 2026. |
| 6 | Transportation | 37.5% | CUSR0000SAT; Jan 2020–May 2026. |
| 7 | Food | 33.5% | CUSR0000SAF1; Jan 2020–May 2026. |
| 8 | Housing | 32.8% | CUSR0000SAH; Jan 2020–May 2026. |
| 9 | Rent of shelter | 32.5% | CUSR0000SAS2RS; Jan 2020–May 2026. |
| 10 | Food and beverages | 32.5% | CUSR0000SAF; Jan 2020–May 2026. |
Values are rounded for display. Order is calculated from the unrounded percent change, descending.
Chart: all 17 CPI groups in the table
The chart uses the same values as the table. Energy commodities are set to 100% of the chart scale because they had the largest cumulative increase in this comparison.
Methodology
The metric is cumulative price change from January 2020 to May 2026. BLS publishes CPI as index numbers; this page converts those index changes into percent increases. Larger cumulative increases rank higher.
Metric and formula
Formula: ((May 2026 CPI index divided by January 2020 CPI index) - 1) multiplied by 100. Values are calculated from BLS CPI-U seasonally adjusted index levels.
What is included
The table uses 17 CPI major aggregates and sub-aggregates with values available for January 2020 and May 2026. The mix is intentional, so the rows show price movement but should not be summed.
How the figures can be checked
Each table row includes a BLS series ID. The IDs can be checked through BLS CPI records and the BLS public search tools for the Consumer Price Index.
Rounding and order
The order is calculated from the unrounded percent change. Displayed values are rounded to one decimal place after the order is set.
The final month is May 2026, so this is a May 2026 snapshot rather than a full-year 2026 average. The January 2020 base month provides a pre-pandemic baseline for comparing cumulative index movement.
The main limitation is that CPI groups have different weights, volatility and measurement rules. This table shows how much each index rose, not how much each group added to headline CPI and not why every price changed.
The analysis does not measure regional inflation, household-level inflation, producer prices, real income loss, corporate margins, monetary policy impact, supply-chain costs or trade effects. It also does not separate price levels from affordability.
Why CPI groups differ
Energy moves quickly
Fuel and energy indexes can change sharply because they are tied to oil, gasoline, utilities, refining capacity, geopolitical shocks and seasonal demand. That is why energy can sit far above headline CPI in a cumulative period.
Shelter changes more slowly
Shelter and rent indexes tend to adjust with a lag because leases, renewal timing and survey methods smooth the shift from market rents into CPI. A slower-moving group can still matter greatly because shelter has a large basket weight.
Transportation blends goods and services
Transportation includes fuel-sensitive costs, vehicle prices, repairs, insurance and services. That mix explains why several transportation rows appear near the top without meaning they are separate causes that can be added together.
Households feel different inflation
A household that rents, drives long distances or spends heavily on food and utilities can feel a different inflation pattern from the national all-items CPI. The table helps show why one headline number can hide very different experiences.
Main table: CPI groups by cumulative price increase
Use the controls to search by name, filter by broad group, change sort order or switch between the Top 10 and all 17 rows.
CPI price increases from January 2020 to May 2026
| Rank | Entity | Value | BLS series |
|---|---|---|---|
| 1 | Energy commodities | 57.2% | CUSR0000SACE; Jan 2020–May 2026. |
| 2 | Energy | 53.8% | CUSR0000SA0E; Jan 2020–May 2026. |
| 3 | Fuels and utilities | 44.7% | CUSR0000SAH2; Jan 2020–May 2026. |
| 4 | Private transportation | 40.1% | CUSR0000SAT1; Jan 2020–May 2026. |
| 5 | Transportation services | 39.8% | CUSR0000SAS4; Jan 2020–May 2026. |
| 6 | Transportation | 37.5% | CUSR0000SAT; Jan 2020–May 2026. |
| 7 | Food | 33.5% | CUSR0000SAF1; Jan 2020–May 2026. |
| 8 | Housing | 32.8% | CUSR0000SAH; Jan 2020–May 2026. |
| 9 | Rent of shelter | 32.5% | CUSR0000SAS2RS; Jan 2020–May 2026. |
| 10 | Food and beverages | 32.5% | CUSR0000SAF; Jan 2020–May 2026. |
| 11 | Other goods and services | 32.1% | CUSR0000SAG; Jan 2020–May 2026. |
| 12 | Services | 30.4% | CUSR0000SAS; Jan 2020–May 2026. |
| 13 | All items | 28.9% | CUSR0000SA0; Jan 2020–May 2026. |
| 14 | Commodities | 26.2% | CUSR0000SAC; Jan 2020–May 2026. |
| 15 | Medical care | 15.9% | CUSR0000SAM; Jan 2020–May 2026. |
| 16 | Apparel | 11.9% | CUSR0000SAA; Jan 2020–May 2026. |
| 17 | Education and communication | 6.4% | CUSR0000SAE; Jan 2020–May 2026. |
No rows match the current search and filter settings. Clear the search field or choose All categories.
Data used: BLS CPI records through May 2026, with the May 2026 CPI publication dated June 10, 2026. Values are rounded for display after the order is calculated.
Insights from the inflation table
Energy explains the top gap, not the whole story
Energy commodities and overall energy are far above the rest of the table, showing the scale of energy volatility. But energy’s high position should not be read as total inflation contribution because CPI weights matter.
Transportation pressure is broad
Private transportation, transportation services and the overall transportation index all rank near the top. This signals pressure across both goods-like and service-like transportation costs, not just gasoline.
Housing matters even below energy
Housing and rent of shelter rose less than energy, but they remain central to household inflation because shelter takes a large share of many budgets and tends to move slowly through CPI.
The bottom of the table is also informative
Medical care, apparel, and education and communication increased much less than headline CPI in this period, which shows why a single national CPI number can mask very different price paths.
What this inflation analysis means
The table helps explain why inflation after 2020 felt uneven. Energy and transportation groups rose much faster than headline CPI, while other parts of the basket increased more slowly. The result is a consumer basket where the pressure was concentrated rather than uniform.
The comparison is especially useful for separating national CPI from personal inflation. A household that drives frequently, rents, uses more utilities or spends a large share on groceries can feel more pressure than the all-items CPI suggests.
The main interpretation risk is treating the table as a list of causes or as a list of contributions. It is neither. It is a comparison of cumulative CPI index changes for the same period.
FAQ
Which CPI groups rose the most from 2020 to 2026?
Energy commodities, energy, fuels and utilities, private transportation and transportation services had the largest cumulative increases among the 17 CPI groups in this table.
Are these full-year 2026 inflation numbers?
No. The final month is May 2026, so the page is a May 2026 snapshot. It is not a full-year 2026 average.
What does CPI-U seasonally adjusted mean?
CPI-U refers to the Consumer Price Index for All Urban Consumers. Seasonally adjusted series are adjusted by BLS to reduce recurring seasonal patterns, making month-to-month comparisons easier.
Why does the table start in January 2020?
January 2020 gives a pre-pandemic baseline for comparing cumulative price changes through the May 2026 CPI value.
Is this a table of what caused inflation?
No. It ranks how much CPI indexes rose. It does not estimate separate causes such as supply shocks, demand, energy markets, labor costs, margins or monetary policy.
Why are broad groups and subgroups both included?
The mix shows how price movement differs across the CPI basket. Because some rows overlap, the values should not be added together.
Does a high rank mean the group contributed the most to headline CPI?
No. Contribution depends on both price change and basket weight. A group can rise sharply but have a smaller effect on headline CPI if it has a smaller weight.
Where can the BLS series IDs be checked?
The series IDs shown in the table can be checked through BLS CPI records and BLS public tools for the Consumer Price Index.
Sources
BLS CPI data file
Numeric source for January 2020 and May 2026 CPI-U seasonally adjusted index values used in the table.
https://download.bls.gov/pub/time.series/cu/cu.data.0.Current
BLS CPI series reference file
Used to verify series titles, seasonal adjustment status, base periods and available values through May 2026.
BLS CPI series ID guide
Explains how CPI series IDs work and how they can be used to identify BLS CPI data series.
BLS Consumer Price Index News Release, May 2026
Used to confirm the May 2026 CPI publication date and monthly CPI context.
