| Administer Oy Tampere CVR 0424269-9 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Administer Oy Vantaa CVR 0625777-1 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| TietoAkseli Oy CVR 0662160-9 | OtherDeputy Member | Since 2023 | — | Active |
| Tilitoimisto Polojärvi Oy CVR 0668263-9 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Tilikamut Oy CVR 0711872-2 | OtherConfidential Clerk | Since 2022 | — | Dissolved |
| TietoAkseli Aldia Oy CVR 0884397-7 | OtherConfidential Clerk | Since 2023 | — | Dissolved |
| E-Tilipalvelut Oy City CVR 1932692-4 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| TietoAkseli Audit Oy CVR 2243346-4 | OtherConfidential Clerk | Since 2023 | — | Active |
| TietoAkseli Corporate Finance Oy CVR 2269964-1 | OtherConfidential Clerk | Since 2023 | — | Active |
| TietoAkseli Group Oy CVR 2272844-9 | OtherConfidential Clerk | Since 2023 | — | Active |
| Administer IT Oy CVR 2385453-5 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Administer Oy Jyväskylä CVR 2385460-7 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Administer Oy Turku CVR 2405732-7 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Muonion Taloushallinto Oy CVR 2462658-5 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Silta Group Oy CVR 2473255-6 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Millenomia Oy CVR 2490535-7 | BoardBoard of Directors | Since 2012 | — | Active |
| Waasa Profit Counter Oy Ab CVR 2508646-1 | OtherConfidential Clerk | Since 2018 | — | Dissolved |
| Konnektor Oy CVR 2734794-4 | OtherDeputy Member | Since 2022 | — | Dissolved |
| TietoAkseli Holding Oy CVR 3207666-7 | BoardBoard of Directors | Since 2025 | — | Active |