The Bank of Korea left the benchmark seven-day repo rate unchanged after the final rate-setting meeting of its governor, Lee Seong-Tae, whose four-year term ends this month.
The bank had come under political pressure to keep the rate unchanged.
Finance Minister Yoon Jeung-Hyun said Monday it was not the right time for an increase. "The private sector is not riding on a full-scale recovery and conditions in the job market are serious," he said.