--- source: Bank of Korea url: https://www.bok.or.kr/fileSrc/eng/9441afc7a9ea4e059138634ef2b98946/1/7c3f04e557db4291923e25c2f06a14d9.pdf document_type: pdf date_retrieved: 2026-04-21T21:02:26.290213+00:00 period: March 2026 parent_publication: Producer Price Index (preliminary) indicators_covered: ["PPI MoM", "PPI YoY"] --- ``` Producer Price Index during March 2026(preliminary) □ The Producer Price Index increased by 1.6% month-on-month in March 2026 ― in year-on-year terms it increased by 4.1%. □ The month-on-month changes in the major sub-indices are as follows: o Agricultural, forestry & marine products: -3.3% o Manufacturing products: 3.5% o Electric power, gas, water & waste: -0.1% o Services: 0.0% Producer Price Index (%) Month-on-month Year-on-year Weight 2025 2026 2025 2026 Dec Jan Feb Marp Dec Jan Feb Marp All items 1000.0 0.4 0.7 0.6 1.6 1.9 1.9 2.5 4.1 Agricultural, forestry & 30.9 3.4 0.7 2.4 -3.3 6.1 2.4 4.5 0.5 marine products Agricultural foods 14.2 5.8 1.4 2.2 -5.0 7.5 0.2 -1.2 -5.6 Livestock products 11.4 1.3 0.9 2.2 -1.6 6.8 8.1 15.5 11.7 Marine foods 4.9 2.3 -2.8 4.2 -2.0 1.7 -2.6 0.6 -2.5 Manufacturing products 480.8 0.4 0.7 0.5 3.5 1.9 1.8 2.3 5.9 Food products & 44.9 0.2 -0.3 0.2 -0.1 2.8 2.2 2.1 1.4 beverages Coal products & 28.1 -3.5 -3.8 4.0 31.9 -4.5 -12.2 -8.1 26.7 petroleum products Chemical products 84.5 0.3 0.9 0.6 6.7 0.2 0.4 0.5 7.4 Basic metal products 50.3 1.3 3.1 1.1 0.8 5.9 7.8 8.5 8.2 Computers, electronic & 43.0 1.7 1.9 0.5 4.1 7.2 8.4 10.0 14.3 optical equipment Electric power, gas, 72.8 0.3 0.0 0.1 -0.1 -1.3 -1.3 -1.1 -1.1 water & waste Services 413.4 0.2 0.8 0.6 0.0 2.2 2.6 3.2 3.1 Transportation 62.2 -0.2 0.8 0.2 -0.2 1.0 1.5 1.9 1.7 Accommodation & 73.8 0.4 0.0 0.4 0.1 3.1 2.8 3.0 2.6 food services Information, telecommunication & 63.1 0.0 0.6 0.0 0.0 1.3 1.2 1.2 1.2 broadcasting services Financial & insurance 30.1 0.6 4.7 5.1 -0.2 8.3 13.7 20.0 21.5 activities Real estate activities 65.5 0.2 0.3 0.2 0.1 1.5 1.6 1.5 1.6 Business support 35.2 -0.2 1.0 -0.1 0.1 2.5 2.3 1.6 1.5 services Note : The Indexes are preliminary and may be revised next month. - 1 - Domestic Supply Price Index1) & Total Output Price Index2) during March 2026(preliminary) 1) The Index measures changes in the price of goods and services supplied to the domestic market by the stages of production. 2) The Index measures changes in the price of goods and services produced by domestic producers. □ The Domestic Supply Price Index increased by 2.3% month-on-month in March 2026 ― in year-on-year terms it increased by 3.7%. □ The month-on-month changes in the major sub-indices are as follows: o Raw materials: 5.1% o Intermediate goods and services: 2.8% o Final goods and services: 0.6% Domestic Supply Price Index (%) Month-on-month Year-on-year Weight1) 2025 2026 2025 2026 Dec Jan Feb Marp Dec Jan Feb Marp Domestic Supply 1000.0 0.4 0.3 0.5 2.3 1.3 1.0 1.4 3.7 Price Index Raw materials 80.3 1.8 -0.9 0.7 5.1 -4.0 -5.7 -7.3 -1.5 Intermediate 619.1 0.4 0.7 0.6 2.8 2.0 2.0 2.7 5.4 goods and services Final goods and 300.7 0.2 -0.1 0.2 0.6 1.6 1.0 1.4 1.7 services Notes : 1) Please refer to p.11 for details. 2) The Indexes are preliminary and may be revised next month. □ The Total Output Price Index increased by 4.7% month-on-month in March 2026 ― in year-on-year terms it increased by 9.0%. Total Output Price Index (%) Month-on-month Year-on-year Weight1) 2025 2026 2025 2026 Dec Jan Feb Mar Dec Jan Feb Marp p Total Output 1000.0 0.4 1.3 1.0 4.7 2.5 3.1 4.3 9.0 Price Index Agricultural, forestry & marine 24.5 3.2 0.7 2.3 -3.0 6.1 2.5 4.6 0.9 products Manufacturing 600.5 0.4 1.8 1.2 7.9 2.9 3.8 5.4 13.5 products Notes : 1) Please refer to p.12 for details. 2) The Indexes are preliminary and may be revised next month. ※ Further statistics can be found at the Bank of Korea's Economic Statistics System website(http://ecos.bok.or.kr). - 2 - 1. Producer Price Index (2020=100) Index Change (%) Compared Weight p Month- with Year- 2026.2 2026.3 on-month previous on-year year-end 1. Basic Groups All items 1000.0 123.28 125.24 1.6 2.9 4.1 Agricultural, forestry & marine products 30.9 124.69 120.52 -3.3 -0.3 0.5 Agricultural foods 14.2 122.47 116.32 -5.0 -1.6 -5.6 Livestock products 11.4 133.59 131.47 -1.6 1.5 11.7 Forest products 0.4 112.56 102.48 -9.0 1.7 -14.8 Marine foods 4.9 119.26 116.89 -2.0 -0.7 -2.5 Mining products 2.1 124.73 124.74 0.0 -0.3 -4.2 Coal, crude petroleum & natural gas 0.1 129.97 129.97 0.0 0.0 0.0 Metallic & non-metallic mineral products 2.0 123.60 123.60 0.0 -0.3 -4.5 Manufacturing products 480.8 127.20 131.71 3.5 4.8 5.9 Food products & beverages 44.9 125.71 125.58 -0.1 -0.2 1.4 Food products 38.5 127.83 127.68 -0.1 -0.3 1.3 Beverages 5.3 118.11 118.14 0.0 0.0 1.7 Cigarette 1.1 99.97 99.97 0.0 0.0 0.1 Fiber products & leather products 14.7 115.24 116.57 1.2 1.5 1.7 Fiber products & apparels 13.3 116.95 118.43 1.3 1.6 1.8 Leather products 1.4 104.04 104.04 0.0 0.5 0.0 Wood & paper products 14.1 122.49 122.82 0.3 0.3 -0.3 Wood & wooden products 3.7 122.50 123.81 1.1 0.8 0.1 Pulp & paper products 10.4 122.38 122.35 0.0 0.1 -0.4 Coal products & petroleum products 28.1 182.21 240.31 31.9 32.0 26.7 Chemical products 84.5 125.38 133.80 6.7 8.4 7.4 Basic chemicals 22.2 153.09 180.83 18.1 22.8 15.7 Synthetic resins & synthetic rubber 7.1 119.13 131.09 10.0 11.3 5.2 Chemical fibers 0.6 126.35 133.09 5.3 5.0 3.9 Pharmaceuticals 11.0 100.42 100.39 0.0 -0.1 -0.1 Fertilizers & pesticides 1.9 125.99 126.03 0.0 2.9 3.5 Other chemical products 13.5 120.04 122.70 2.2 3.5 6.8 Plastic products 24.4 121.11 123.70 2.1 2.8 4.6 Rubber products 3.8 117.95 118.12 0.1 0.4 0.3 Non-metallic mineral products 16.5 127.38 127.56 0.1 0.0 -0.4 Glass and glass products 2.6 110.79 110.79 0.0 0.0 -0.6 Other non-metallic mineral products 13.9 131.55 131.78 0.2 0.1 -0.4 Note : The indexes are preliminary and may be revised next month. -3- (2020=100) Index Change (%) Compared Weight p Month- with Year- 2026.2 2026.3 on-month previous on-year year-end Basic metal products 50.3 150.55 151.78 0.8 5.1 8.2 Basic steel products 30.1 132.55 134.17 1.2 2.8 1.6 Non-ferrous metal bar & basic products 17.1 199.97 200.43 0.2 9.7 23.2 Cast metal products 3.1 131.97 132.52 0.4 1.0 2.2 Fabricated metal products 31.4 138.74 138.83 0.1 1.3 1.8 Computers, electronic & optical equipment 43.0 107.43 111.87 4.1 6.6 14.3 Semi-conductors 4.9 167.18 183.55 9.8 28.8 94.1 Electronic display devices 10.0 90.08 91.67 1.8 0.4 -2.2 Other electronic components 7.5 119.04 120.03 0.8 1.5 0.7 Computers & peripherals 1.6 110.18 169.00 53.4 70.6 75.8 Communication & broadcasting equipment, 8.5 76.43 76.84 0.5 1.6 -0.1 video & audio apparatus Precision equipment 10.5 115.80 116.01 0.2 0.2 0.1 Electrical equipment 46.8 131.18 131.00 -0.1 1.2 3.1 Machinery & equipment 42.2 112.33 112.57 0.2 0.5 0.9 General purpose machinery 22.5 117.14 117.58 0.4 0.7 1.2 Special purpose machinery 19.7 107.22 107.24 0.0 0.2 0.6 Transport equipment 55.9 109.76 109.88 0.1 0.3 1.4 Motor vehicles & parts of motor vehicles 55.8 109.76 109.88 0.1 0.3 1.4 Other transport equipment 0.1 108.80 108.80 0.0 0.0 1.6 Other manufacturing products 8.4 125.88 125.60 -0.2 0.0 0.4 Electric power, gas, water & waste 72.8 149.16 148.95 -0.1 0.0 -1.1 Electric power, gas & steam 57.2 159.76 159.48 -0.2 0.1 -1.3 Electric power 37.6 161.19 161.19 0.0 0.0 0.0 Gas, steam & hot water 19.6 154.28 153.47 -0.5 0.4 -3.4 Water, waste treatment & recycling service 15.6 111.26 111.27 0.0 -0.7 0.3 Water supply 2.0 120.43 120.43 0.0 1.0 3.5 Wastewater treatment services 4.9 129.88 129.90 0.0 4.6 7.8 Waste treatment & resources recycling services 8.7 101.23 101.23 0.0 -4.0 -4.4 Services 413.4 115.02 115.01 0.0 1.4 3.1 Transportation 62.2 113.49 113.27 -0.2 0.8 1.7 Land transport 24.4 116.57 116.67 0.1 2.0 2.7 Water transport 1.0 87.91 89.14 1.4 0.5 -2.1 Air transport 6.0 120.23 117.22 -2.5 -1.9 3.0 Warehousing and support activities for transportation 24.0 104.29 104.29 0.0 0.4 1.3 Postal, couriers and messengers activities 6.8 127.97 127.93 0.0 0.0 0.4 Accommodation & food services 73.8 126.40 126.51 0.1 0.5 2.6 Note : The indexes are preliminary and may be revised next month. -4- (2020=100) Index Change (%) Compared Weight p Month- with Year- 2026.2 2026.3 on-month previous on-year year-end Information, telecommunication & broadcasting 63.1 110.51 110.55 0.0 0.7 1.2 services Telecommunications 16.2 97.98 97.98 0.0 0.0 0.2 Information services 7.9 111.69 112.18 0.4 0.2 3.7 Software development, supply & other IT services 34.5 116.16 116.16 0.0 1.1 1.1 Newspapers & publishing services 3.8 118.68 118.16 -0.4 0.7 0.7 Motion picture, video, sound recording and publishing 0.7 128.66 128.66 0.0 0.0 0.0 activities Financial & insurance activities 30.1 116.99 116.71 -0.2 9.8 21.5 Financial activities 9.8 91.48 91.69 0.2 0.9 0.6 Insurance activities 11.4 97.86 97.86 0.0 0.8 0.6 Activities auxiliary to financial and insurance 8.9 204.54 202.71 -0.9 31.1 94.6 activities Real estate activities 65.5 107.59 107.65 0.1 0.6 1.6 Housing services 23.2 105.38 105.48 0.1 0.2 0.9 Other real estate activities 42.3 108.76 108.80 0.0 0.8 2.0 Professional, scientific and technical services 33.9 112.92 112.70 -0.2 0.2 0.8 Professional services related to business 12.6 105.73 105.08 -0.6 -0.8 0.3 Scientific, technical & other professional services 21.3 118.36 118.42 0.1 0.7 1.0 Business support services 35.2 113.78 113.92 0.1 1.0 1.5 Rental and leasing activities of equipment, goods 13.2 113.20 113.31 0.1 -0.1 -0.1 & intellectual property rights Business support services 22.0 114.07 114.24 0.1 1.7 2.5 Education 16.7 112.94 113.27 0.3 0.9 1.8 Arts, sports and recreation related services 12.9 113.85 113.50 -0.3 1.2 1.8 Culture & travel related services 2.3 121.81 117.96 -3.2 3.8 7.3 Sports activities & amusement activities 10.6 111.87 112.27 0.4 0.6 0.7 Other services 20.0 126.38 126.69 0.2 2.0 4.3 Repair services of motor vehicles & goods, personal 20.0 126.38 126.69 0.2 2.0 4.3 services 2. Specialized Groups Foods 68.1 125.10 123.04 -1.6 -0.4 1.1 Excluding foods 931.9 123.15 125.39 1.8 3.1 4.3 Fresh foods 12.2 125.12 116.41 -7.0 -1.7 -11.6 Excluding fresh foods 987.8 123.26 125.34 1.7 2.9 4.3 Energy 78.3 166.85 173.87 4.2 4.1 2.6 Excluding energy 921.7 120.23 121.87 1.4 2.7 4.2 Information technology 104.7 113.80 115.74 1.7 3.6 8.2 Excluding IT 895.3 124.36 126.31 1.6 2.8 3.5 Excluding foods & energy 853.6 119.85 121.77 1.6 3.0 4.5 Excluding fresh foods & energy 909.5 120.17 121.95 1.5 2.8 4.5 Note : The indexes are preliminary and may be revised next month. -5- 2. Producer Price Indexes(Time Series) (2020=100) Total Index <1000> Agricultural, Manufacturing Year & Month Period-on- Year-on- Forestry & Marine Services Products Index Period Year Products <413.4> <480.8> Change(%) Change(%) <30.9> 2012 103.31 0.7 - 82.66 113.33 91.08 2013 101.66 -1.6 - 77.72 109.94 91.34 2014 101.12 -0.5 - 78.23 107.60 92.67 2015 97.06 -4.0 - 80.04 100.35 93.80 2016 95.30 -1.8 - 84.71 96.83 94.76 2017 98.58 3.4 - 90.15 101.46 96.10 2018 100.43 1.9 - 93.37 103.68 97.49 2019 100.46 0.0 - 91.26 102.64 98.68 2020 100.00 -0.5 - 100.00 100.00 100.00 2021 106.38 6.4 - 108.14 110.42 102.32 2022 115.29 8.4 - 109.25 123.34 105.52 2023 117.11 1.6 - 112.55 122.16 108.13 2024 119.08 1.7 - 117.61 123.31 110.46 2025 120.45 1.2 - 119.09 123.99 112.29 2023. 3 117.05 0.1 3.3 109.38 122.61 107.61 4 116.96 -0.1 1.6 107.35 122.78 107.94 5 116.53 -0.4 0.5 109.03 121.66 107.98 6 116.27 -0.2 -0.3 107.55 120.86 108.08 7 116.53 0.2 -0.3 112.72 120.84 108.35 8 117.50 0.8 0.9 120.83 122.13 108.60 9 118.03 0.5 1.3 121.17 123.14 108.50 10 117.86 -0.1 0.6 114.29 123.19 108.55 11 117.41 -0.4 0.6 111.29 122.34 108.57 12 117.56 0.1 1.1 116.23 121.93 108.80 2024. 1 118.19 0.5 1.3 121.18 122.13 109.50 2 118.55 0.3 1.4 121.96 122.76 109.71 3 118.82 0.2 1.5 123.49 123.09 109.79 4 119.16 0.3 1.9 119.75 123.97 110.00 5 119.25 0.1 2.3 114.93 123.97 110.55 6 119.23 0.0 2.5 111.73 124.09 110.66 7 119.56 0.3 2.6 113.50 124.51 110.88 8 119.38 -0.2 1.6 119.47 123.49 110.92 9 119.16 -0.2 1.0 125.81 122.58 110.74 10 119.01 -0.1 1.0 114.86 122.77 110.91 11 119.10 0.1 1.4 110.77 122.93 110.83 12 119.52 0.4 1.7 113.91 123.39 110.97 2025. 1 120.27 0.6 1.8 118.90 124.24 111.42 2 120.33 0.0 1.5 119.34 124.30 111.47 3 120.36 0.0 1.3 119.91 124.33 111.50 4 120.14 -0.2 0.8 118.17 123.77 111.66 5 119.64 -0.4 0.3 112.95 123.00 111.86 6 119.77 0.1 0.5 113.67 123.00 112.14 7 120.19 0.4 0.5 120.05 123.27 112.62 8 120.11 -0.1 0.6 124.14 123.24 112.19 9 120.54 0.4 1.2 124.71 123.44 112.67 10 120.94 0.3 1.6 119.43 124.29 113.19 11 121.31 0.3 1.9 116.89 125.25 113.26 12 121.76 0.4 1.9 120.86 125.70 113.44 2026. 1 122.56 0.7 1.9 121.71 126.53 114.34 2 123.28 0.6 2.5 124.69 127.20 115.02 3p 125.24 1.6 4.1 120.52 131.71 115.01 The Indexes are preliminary and may be revised next month, < > : weight for 2026 -6- 3. Domestic Supply Price Indexes(Time Series) (2020=100) Total Index <1000> Intermediate Final Period-on- Year-on- Raw Materials Year & Month Goods & Services Goods & Services Index Period Year <80.278> <619.050> <300.672> Change(%) Change(%) 2012 110.02 0.4 - 164.61 112.16 96.46 2013 106.56 -3.1 - 152.56 108.17 95.83 2014 104.43 -2.0 - 142.23 105.37 96.50 2015 97.75 -6.4 - 100.73 98.55 96.40 2016 95.16 -2.6 - 85.34 95.39 96.98 2017 99.10 4.1 - 104.77 99.40 97.75 2018 102.12 3.0 - 120.23 102.10 98.50 2019 102.35 0.2 - 119.65 101.98 99.49 2020 100.00 -2.3 - 100.00 100.00 100.00 2021 108.62 8.6 - 131.44 109.46 102.41 2022 122.52 12.8 - 188.14 122.86 108.76 2023 121.69 -0.7 - 168.42 122.18 111.25 2024 124.01 1.9 - 169.49 124.26 114.29 2025 124.93 0.7 - 162.15 125.44 116.41 2023. 3 122.52 0.8 2.6 172.94 123.31 110.73 4 122.26 -0.2 -0.3 168.95 123.15 111.05 5 122.03 -0.2 -1.5 172.89 122.30 111.18 6 120.36 -1.4 -3.7 159.79 121.12 110.83 7 119.91 -0.4 -4.7 158.05 120.50 110.99 8 121.49 1.3 -2.3 166.51 121.66 112.02 9 122.49 0.8 -2.4 172.32 122.55 112.31 10 123.29 0.7 -2.1 177.89 123.19 112.40 11 121.98 -1.1 -1.6 171.03 122.16 111.71 12 121.75 -0.2 -0.1 167.53 121.93 112.11 2024. 1 122.43 0.6 1.4 165.77 122.69 113.13 2 122.98 0.4 1.2 167.76 123.19 113.48 3 123.25 0.2 0.6 168.80 123.50 113.49 4 124.47 1.0 1.8 173.26 124.73 114.05 5 124.77 0.2 2.2 176.33 124.88 114.13 6 124.79 0.0 3.7 173.51 125.15 114.24 7 125.04 0.2 4.3 172.96 125.45 114.48 8 124.40 -0.5 2.4 172.37 124.45 114.60 9 123.39 -0.8 0.7 166.07 123.45 114.62 10 123.47 0.1 0.1 162.77 123.86 114.72 11 124.15 0.6 1.8 165.65 124.56 114.89 12 124.96 0.7 2.6 168.57 125.20 115.65 2025. 1 125.75 0.6 2.7 170.10 125.96 116.31 2 125.97 0.2 2.4 174.44 126.01 116.08 3 126.08 0.1 2.3 172.45 126.21 116.44 4 125.22 -0.7 0.6 166.01 125.51 116.37 5 123.50 -1.4 -1.0 156.82 124.10 115.57 6 122.80 -0.6 -1.6 150.47 123.71 115.45 7 123.77 0.8 -1.0 157.56 124.21 116.07 8 124.00 0.2 -0.3 159.65 124.29 116.17 9 124.11 0.1 0.6 157.44 124.51 116.58 10 125.28 0.9 1.5 159.89 125.95 117.00 11 126.10 0.7 1.6 159.05 127.19 117.32 12 126.63 0.4 1.3 161.88 127.65 117.54 2026. 1 127.07 0.3 1.0 160.47 128.54 117.48 2 127.72 0.5 1.4 161.65 129.36 117.68 3p 130.72 2.3 3.7 169.94 133.04 118.41 The Indexes are preliminary and may be revised next month, < > : weight for 2026 -7- 4. Total Output Price Indexes(Time Series) (2020=100) Total Index <1000> Agricultural, Manufacturing Period-on- Year-on- Foresty & Marine Services Year & Month Goods Index Period Year Products <317.468> <600.486> Change(%) Change(%) <24.525> 2012 107.32 0.1 - 83.80 116.44 91.10 2013 104.97 -2.2 - 78.30 112.50 91.35 2014 103.13 -1.8 - 78.42 108.74 92.68 2015 98.79 -4.2 - 80.17 102.10 93.81 2016 96.52 -2.3 - 84.94 98.40 94.77 2017 100.49 4.1 - 90.46 103.59 96.11 2018 102.22 1.7 - 93.55 105.53 97.49 2019 101.58 -0.6 - 91.55 103.75 98.68 2020 100.00 -1.6 - 100.00 100.00 100.00 2021 108.01 8.0 - 108.04 111.69 102.32 2022 119.45 10.6 - 109.54 127.42 105.51 2023 118.61 -0.7 - 112.47 122.80 108.12 2024 121.81 2.7 - 117.28 126.30 110.44 2025 123.59 1.5 - 118.89 127.89 112.26 2023. 3 118.82 0.6 1.4 109.50 123.51 107.60 4 118.84 0.0 -0.4 107.46 123.80 107.93 5 118.41 -0.4 -2.1 109.08 122.91 107.97 6 117.37 -0.9 -3.7 107.59 120.96 108.07 7 117.38 0.0 -3.6 112.64 120.63 108.34 8 119.10 1.5 -1.5 120.48 123.08 108.59 9 119.99 0.7 -1.5 120.74 124.55 108.49 10 120.29 0.3 -1.9 114.05 125.29 108.54 11 118.87 -1.2 -1.4 111.16 122.94 108.56 12 118.67 -0.2 0.3 115.89 122.14 108.79 2024. 1 119.88 1.0 2.0 120.80 123.45 109.49 2 120.53 0.5 2.1 121.56 124.49 109.70 3 120.92 0.3 1.8 122.96 125.01 109.78 4 122.41 1.2 3.0 119.36 127.64 109.99 5 122.31 -0.1 3.3 114.52 127.36 110.54 6 122.56 0.2 4.4 111.53 127.88 110.65 7 123.06 0.4 4.8 113.28 128.56 110.87 8 122.09 -0.8 2.5 119.01 126.49 110.91 9 121.23 -0.7 1.0 125.15 124.75 110.73 10 121.48 0.2 1.0 114.67 125.50 110.90 11 122.14 0.5 2.8 110.72 126.57 110.82 12 123.07 0.8 3.7 113.84 127.89 110.95 2025. 1 124.02 0.8 3.5 118.67 129.05 111.40 2 123.77 -0.2 2.7 119.03 128.57 111.45 3 123.97 0.2 2.5 119.63 128.91 111.48 4 123.46 -0.4 0.9 117.98 127.95 111.64 5 122.09 -1.1 -0.2 112.83 125.75 111.84 6 121.77 -0.3 -0.6 113.50 125.04 112.11 7 122.42 0.5 -0.5 119.71 125.75 112.60 8 122.52 0.1 0.4 123.76 126.02 112.17 9 122.92 0.3 1.4 124.35 126.24 112.65 10 124.39 1.2 2.4 119.36 128.77 113.17 11 125.65 1.0 2.9 117.04 131.09 113.24 12 126.12 0.4 2.5 120.81 131.57 113.42 2026. 1 127.82 1.3 3.1 121.63 133.94 114.32 2 129.06 1.0 4.3 124.45 135.52 115.00 3p 135.12 4.7 9.0 120.71 146.27 114.99 The Indexes are preliminary and may be revised next month, < > : weight for 2026 -8- (Appendix 1) 1. How the Producer Price Index is Compiled 1. Definition and Use ― The Producer Price Index (PPI) measures changes in the price of goods and services produced and transacted in the domestic market. The index is used to measure business trend indicators, deflators, etc. 2. Frequency ― The prices of goods and services are surveyed once a month. 3. Prices Surveyed: basic prices 4. Items Subject to Survey ― For goods and services, the transaction amounts in the domestic market of only those items accounting for more than 1/10,000 of the total transaction amount and more than 1/2,000 of the total transaction amount respectively, and those that represent price fluctuations of items under the same classification are surveyed. ― Items marked without comparable price quotations for considerable period, e.g., ships, weapons, aircraft, works of art, etc., are excluded. 5. Method of Compilation ― Groups ㅇ Basic Groups -- The main five categories are: Agricultural, forestry & marine products; Mining products; Manufacturing products; Electric power, gas, water & waste; and, Services. ㅇ Specialized Groups -- Ten indexes fall under this classification: Foods/Excluding-foods; Fresh foods/Excluding fresh foods; Energy/ Excluding energy; IT/Excluding IT; Excluding foods & energy; and, Excluding fresh foods & energy. - 9 - ― Weight: Weight is the ratio in permillage that shows how much the domestic transaction value of a selected item and its similar ones accounts for the universe of possibilities. It represents the importance of each item in the overall index. Number of Items and Weight of Each PPI Category (as of 2026) Category No. of items Weight Total Index 890 1,000.0 Agricultural, forestry & marine products 70 30.9 Mining products 6 2.1 Basic Manufacturing products 691 480.8 Electric power, gas, water & waste 14 72.8 Services 109 413.4 Foods 152 68.1 Excluding foods 738 931.9 Fresh foods 45 12.2 Excluding fresh foods 845 987.8 Speciali- Energy 21 78.3 zed Excluding energy 869 921.7 Information Technology 68 104.7 Excluding information technology 822 895.3 Excluding foods & energy 717 853.6 Excluding fresh foods & energy 824 909.5 ― Formula: A chain-weighted formula is used. ― Quality Adjustment Method: Methods such as production cost, direct comparison, overlapping, and imputation are generally employed to adjust for quality. The Hedonic regression method is applied to products such as Cellular phone, for example, whose qualities are quantifiable by objective numeric values. 6. Notes on Statistical Use ― The purpose of the PPI is to measure changes in the price, not to present absolute price levels. ― Prices of agricultural, forestry & marine products are bidding prices in wholesale markets rather than those at which farmers or fishers sell their products. ― The PPI may be compared with the Consumer Price Index (CPI), but should not be used to measure margins at the stages of producer and retail sales. - 10 - 2. How the Domestic Supply Price Index is Compiled 1. Definition and Use ― The Domestic Supply Price Index measures changes in the price of goods and services supplied to the domestic market by the stages of processing. 2. Method of Compilation ― The Index aggregates and reclassifies the items in the Producer Price Index and Import Price Index. ― When the items in the Import Price Index are compiled by the prices at the contract point, are used for compilation of the Domestic Supply Price Index, they are adjusted by the time gaps between the contract point and the customs clearance point. Weight of Each Domestic Supply Price Index Category (as of 2026) Category Weight Domestic Supply Price Index 1,000.000 Raw materials 80.278 Intermediate goods and services 619.050 Final goods and services 300.672 3. Notes on statistical use ― The final goods and services index seems to move similarly with the Consumer Price Index. The PPI, however, would show different movement patterns because it includes capital equipment that the CPI does not cover. ― The Import Price Index adjusted by the customs clearance time is different from the Import Price Index compiled by the contract prices. Coverage of Each Index Producer Price Index Import Price Index Export Price Index Goods produced and Goods transacted in the Imported goods Exported goods domestic market Services produced Services and transacted in the Domestic Supply Price Index domestic market - 11 - 3. How the Total Output Price Index is Compiled 1. Definition and Use ― The Total Output Price Index measures changes in the price of goods and services produced by domestic producers. 2. Method of Compilation ― The Total Output Price Index aggregates and reclassifies the items in the Producer Price Index and Export Price Index. ― The Export Price Index is compiled from the prices set by a contract between two parties, and customs clearance time should be considered and reflected in the index. Weight of Each Total Output Price Index Category (as of 2026) Category Weight Total Output Price Index 1,000.000 Agricultural, forestry & marine products 24.525 Mining products 1.614 Manufacturing products 600.486 Electric power, gas, water & waste 55.907 Services 317.468 3. Notes on Statistical Use ― The Export Price index is adjusted by the customs procedure time and is different from the Export Price Index compiled by the contract prices. Coverage of each Index Producer Price Index Export Price Index Import Price Index Goods produced and Goods transacted in the Exported goods Imported goods domestic market Services produced Services and transacted in the Total Output Price Index domestic market - 12 - (Appendix 2) Release date of Producer Price Index during 2026 Statistics Date Producer Price Index during December 2025(preliminary) January 20 Producer Price Index during January 2026(preliminary) February 24 Producer Price Index during February 2026(preliminary) March 24 Producer Price Index during March 2026(preliminary) April 22 Producer Price Index during April 2026(preliminary) May 21 Producer Price Index during May 2026(preliminary) June 19 Producer Price Index during June 2026(preliminary) July 22 Producer Price Index during July 2026(preliminary) August 21 Producer Price Index during August 2026(preliminary) September 18 Producer Price Index during September 2026(preliminary) October 21 Producer Price Index during October 2026(preliminary) November 20 Producer Price Index during November 2026(preliminary) December 22 Note : Embargoed for release until the evening paper of the relevant dates of release. (However, news agencies, broadcasting companies and internet-based media are embargoed for publication until 06:00 am of the release date.) - 13 - ```