Public utility charges have already started rising this year, putting a bigger burden on households.
In addition to the hikes in electricity and raw material prices, steeper prices are expected in a range of fields.
The Korea Gas Corporation raised the price of natural gas by roughly 5.8 percent on Wednesday. This followed a lift in electricity rates in November by an average of 5.4 percent as the government attempted to curtail the nation's heavy electricity use.
Transportation fees are also set to go up, with the Korean Railroad Corporation likely to increase its fares by about 5 percent.
Parcel delivery service fees are also slated to rise starting next month.