Corporate revenue declined 10.1 percent in the second quarter from a year earlier, after skidding 1.9 percent in the previous quarter, according to the Bank of Korea (BOK).
It was the fastest reduction since relevant data began to be compiled in 2015. The COVID-19 pandemic roiled the revenue by both manufacturers and non-manufacturers.
Sale by manufacturers retreated 12.7 percent in the second quarter after falling 1.9 percent in the first quarter. The revenue by non-manufacturers reduced 6.5 percent in the second quarter and 1.9 percent in the first quarter each.
The ratio of operating profit to revenue for domestic companies stood at 5.3 percent during the April-June quarter, down from 5.5 percent in the January-March quarter.
The ratio for manufacturers slumped from 5.7 percent in the first quarter to 5.3 percent in the second quarter, but the reading for non-manufacturers rose from 5.2 percent to 5.3 percent in the same period.
The ratio of corporate debt to equity came in at 87.0 percent in the second quarter, down from 88.2 percent in the prior quarter.