In August 2023, the cost of living in the United States experienced its most significant monthly increase of the year. The Consumer Price Index (CPI), a measure of the average prices paid by consumers for a basket of goods and services, surged by 0.6%, marking the steepest rise in prices. Compared to the same period in the previous year, the inflation gauge recorded a notable increase of 3.7%. These figures were slightly higher than what economists, surveyed by Dow Jones, had anticipated, as they were expecting respective increases of 0.6% and 3.6%. This uptick in inflation followed a more modest rise of 0.2% and 3.2% in July.
Digging deeper into the data, it becomes apparent that the core CPI, which excludes volatile food and energy prices, also experienced an increase. The core CPI rose by 0.3% in August and by 4.3% from the previous year, surpassing the estimated 0.2% and 4.3%. Federal Reserve officials tend to pay closer attention to the core CPI as it provides a more reliable indication of the long-term inflation trend. The core CPI had risen by 0.2% and 4.7% in July.

One of the primary drivers of the overall price increase was the surge in energy prices, which jumped by 5.6% within the month. This surge was particularly pronounced in gasoline prices, which spiked by 10.6%. Food prices also saw a modest increase of 0.2%. Shelter costs, constituting roughly one-third of the CPI’s weight, rose by 0.3%. Within the shelter category, the rent of primary residences increased by 0.5% and by 7.8% compared to the previous year. Owners’ equivalent rent, a significant measure reflecting homeowners’ expectations of rental income, rose by 0.4% and 7.3%, respectively.
Other notable findings in the report included a 4.9% increase in airfares, although they remained 13.3% lower than the previous year. Used vehicle prices, which had significantly contributed to inflation in 2021 and 2022, declined by 1.2%, marking a 6.6% decrease year over year. Transportation services experienced a 2% increase during the month.
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Housing costs continued to be a prominent factor in the overall inflation picture. Excluding shelter from the CPI calculation would have resulted in an annual increase of just about 1%. According to Lisa Sturtevant, chief economist at Bright MLS, “Housing continues to contribute an outsized share to the inflation measures.” She noted that rent growth had slowed considerably, and median rents nationally had fallen year-over-year in August. However, it takes time for these trends to show up in the CPI, which the Federal Reserve considers when deciding on interest rate policy.
The surge in headline inflation also had an impact on workers’ paychecks, with real average hourly earnings declining by 0.5% for the month. Nevertheless, they remained 0.5% higher than the previous year, according to data from the Labor Department.
These inflationary pressures come at a time when the Federal Reserve is reassessing its approach to tackling inflation. After a series of rate hikes that began in March 2022, the central bank increased its benchmark borrowing rate by 5.25 percentage points to combat inflation that had reached levels not seen in over four decades. Recent statements from Fed officials suggest a more cautious stance on future rate hikes, as they now view the risks as more evenly balanced.
In conclusion, the August 2023 CPI report shows a significant monthly increase in inflation, driven primarily by rising energy prices and continued pressure on housing costs. This data is closely watched by the Federal Reserve as it shapes its approach to monetary policy and interest rates in the coming months. While the Fed is expected to keep rates unchanged at its next meeting, the path beyond that remains uncertain, with markets showing volatility in their expectations of future rate hikes.