U.S. business activity accelerated in August at its fastest pace in more than four years, according to S&P Global’s Composite Purchasing Managers’ Index released on Aug. 21, offering a strong signal about the health of the American economy heading into the fall.
The composite PMI, which combines factory output and services business activity, rose to 56 from 54.5 in July. Any reading above 50 indicates expansion. The August figure exceeded analyst expectations and marked the strongest expansion since April 2022.
S&P Global’s chief business economist described the environment as US business booming.
The gains were led by the services sector, which registered its strongest activity since December 2024, while manufacturing output continued to expand at a more moderate pace. The shift toward the services sector reflected a combination of softer price pressures, higher staffing levels, increased new orders, expanded backlogs and greater business confidence.
What the PMI measures and why it matters
The PMI is a monthly survey of company executives across the manufacturing and services sectors, asking them about current conditions compared to the previous month. The composite figure combines both sectors and is watched as a real-time indicator of economic momentum because it is released before most official government data for the same period.
A PMI reading of 56 is meaningfully above the neutral 50 threshold. The difference between 50 and 56 is meaningful, since each point above 50 represents a broader share of firms reporting expansion rather than contraction, and a 56 reading signals a sizable majority of respondents seeing business conditions improve.
The April 2022 comparison is a relevant benchmark because that period represented the initial burst of post-pandemic economic reopening, when demand was surging across sectors. Reaching that level again in August 2026 reflects a genuine acceleration rather than simply a recovery from weakness.
The services story
The service sector’s return to its strongest reading since December 2024 is the more meaningful development within the report. It represents the larger portion of the American economy, and its performance drives employment, consumer spending patterns and the overall income picture for working Americans in a way that manufacturing alone cannot.
Softer price pressures within this sector are particularly notable given that services inflation has been one of the more persistent problems for the Federal Reserve in its effort to return overall inflation to its 2 percent target. If businesses in that sector are reporting reduced pricing pressure alongside rising activity and staffing, it suggests the conditions the Fed has been looking for, growth without inflationary heat, may be developing.
Higher staffing levels reported by services firms indicates that companies are confident enough in demand to add workers, which supports employment growth and household income.
What comes next
The August PMI is a preliminary reading and will be followed by a final figure later in the month. Official government data on economic output, employment and inflation for August will arrive in September and will either confirm or complicate the picture the PMI has painted.
For now, the reading positions the American economy in a stronger posture than most forecasters anticipated entering the fall.
