| A&A Koistinen Consulting Oy | Administrative & support | 2023 |
| ATE - Applied Technical Engineering Oy | Manufacturing | 1996 |
| Aholansaaren Matkailu Oy | Hospitality | 2006 |
| Aliot-Cloud Oy | Wholesale & retail | 2015 |
| Alldent Ky | Information & communication | 2006 |
| Bokkum Oy | Real estate | 2000 |
| Bon Group Oy | Hospitality | 2022 |
| Bon Kuopio Oy | Hospitality | 2024 |
| Bon Levi Oy | Hospitality | 2025 |
| Bon Rovaniemi Oy | Hospitality | 2025 |
| Bon Tahko Oy | Hospitality | 1997 |
| Bussi ja taksiliikenne Hyvönen Oy | Transport & logistics | 2014 |
| Chindicom Oy | Professional & scientific | 2021 |
| Grindstone Group Oy | Wholesale & retail | 2005 |
| Hell-investment Oy | Financial services | 2006 |
| Huvuddagen Oy | Professional & scientific | 2024 |
| Interkopio Oy | Wholesale & retail | 1994 |
| JPH-RENTAL Oy | Hospitality | 2023 |
| Kiinteistö Oy Nilsiän Hovipuisto | Real estate | 2004 |
| Kiinteistö Oy Nilsiän Rinnetahko 2 | Real estate | 2002 |
| Kiinteistö Oy Ohrakuja 2 C 1 | Real estate | 2013 |
| Kiinteistö Oy Tahkon Kiljusenkallionsauna | Real estate | 2000 |
| Kiinteistö Oy Tahkon Kota | Real estate | 2000 |
| Kiinteistö Oy Tahkon Mare | Real estate | 2002 |
| Kiinteistö Oy Tahkon Nipari | Real estate | 2009 |
| Kiinteistö Oy Tahkon Putti | Real estate | 2004 |
| Kuljetus Käsnänen Ky | Transport & logistics | 2006 |
| Kuopion Puutukku Oy | Wholesale & retail | 1994 |
| Lakeland Luxperience Oy | Arts & recreation | 2019 |
| LassInvest Oy | Financial services | 2025 |
| Lomarantalan Huvilat Oy | Real estate | 1989 |
| Makutiimi Oy | Hospitality | 2018 |
| Mielen Kehräämö Oy | Education | 2024 |
| Movira Oy | Construction | 2005 |
| Murroskonsultit Oy | Professional & scientific | 2007 |
| Navisco Oy | Professional & scientific | 2007 |
| Nell-Investment Oy | Financial services | 2007 |
| Nöyrärenki Oy | Hospitality | 2006 |
| PNT Active Oy | Hospitality | 2014 |
| PNT Real Estate Oy | Administrative & support | 2014 |
| Padel Tahko Oy | Arts & recreation | 2022 |
| Planco Oy | Hospitality | 2011 |
| Ramivot Oy | Wholesale & retail | 2009 |
| Rehti Ravintolat Oy | Hospitality | 2012 |
| SKYCON Oy | Administrative & support | 2020 |
| Sahakahvila Avoin yhtiö | Manufacturing | 2010 |
| Santava Oy | Professional & scientific | 2006 |
| SeikkailuKuopio Oy | Administrative & support | 1999 |
| Syvärin Kunkku Oy | Hospitality | 2002 |
| Sörkanranta Capital Oy | Real estate | 2017 |
| TAHKOcom Oy | Administrative & support | 2020 |
| Tahko Adventure Oy | Administrative & support | 2024 |
| Tahko Apartments Oy | Hospitality | 2024 |
| Tahko Golf Club Oy | Arts & recreation | 1998 |
| Tahko Horse Forum Oy | Arts & recreation | 2011 |
| Tahko Hospitality Oy | Hospitality | 2025 |
| Tahko Leisure Oy | Arts & recreation | 2023 |
| Tahko Safari House Oy | Administrative & support | 2020 |
| Tahko Sky Oy | Hospitality | 2022 |
| Tahko Spa Oy | Arts & recreation | 2003 |
| Tahko-Tours Oy | Administrative & support | 2002 |
| Tahko24H Oy | Administrative & support | 2002 |
| TahkoPark Oy | Real estate | 2004 |
| Tahkolaakson Majoitus Oy | Administrative & support | 2003 |
| Tahkon Kehitys Oy | Professional & scientific | 2004 |
| Tahkon Klaara Oy | Construction | 1998 |
| Tahkon Kukka Oy | Construction | 1998 |
| Tahkon Kultaranta Oy | Hospitality | 1999 |
| Tahkon Taika Oy | Hospitality | 2018 |
| Tahkon Tekstiilipalvelu Oy | Other services | 2026 |
| Tepi Terveyspalvelut Oy | Health & social care | 2009 |
| Travel House Finland Oy | Administrative & support | 2025 |
| V. Väki Oy | Hospitality | 2020 |
| Vision mouse Oy | Professional & scientific | 2011 |
| WATEEO Consulting Oy | Professional & scientific | 2021 |
| Xantit Oy | Professional & scientific | 1998 |
| YR Marikos Oy | Wholesale & retail | 2010 |