The PCE inflation is seen by the US central bank Federal Reserve (Fed) as the most important price increase measure when decisions on future interest rates are to be made.
The underlying PCE inflation in August was 2.9 percent, which can be compared to 2.9 percent in July and expectations of an unchanged level.
In contrast to the more common CPI measure of inflation, which is based on a basket of goods, the PCE inflation is calculated on what is actually consumed.
The Fed's inflation target is 2 percent.
