New Delhi, Sept. 23 -- India's private sector growth in September has cooled down from its recent high in August, signalling a modest slowdown, according to HSBC's flash Purchasing Managers' Index survey released Tuesday.

A softer expansion in new business intake was accompanied by slower increases in private sector output and employment, with international sales growth also slowing due to the US's 50% tariff on Indian goods, the survey said.

The HSBC Flash India Composite Output Index, which tracks month-on-month changes in combined output across manufacturing and services, fell to 61.9 in September from 63.2 in August.

"Price trends were more benign as cooler input cost inflation allowed for selling charges to be lifted to a lesser d...