20.9.2016

Tax Disputes – A Key Part of Corporate Financial Administration

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Disagreements that arise in the tax assessment and in tax audits often lead to lengthy appeal processes that sap time and resources from a company’s management and financial department. We advocate a pre-emptive approach to avoid problems through careful analysis of tax issues, diligent reporting and smooth communication with the tax authorities.

Should you nevertheless find yourself facing a tax dispute, whether domestic or international in nature, you will be able to rely on our renowned dispute resolution team to defend your interests. We will also provide you with the best possible assistance in handling tax complaint processes if your company is subject to a tax audit or if the Finnish Tax Administration intervenes in any arrangements at a later date.

Latest references

Careful planning is often the key to a successful arrangement, and it is possible to get definitive answers to questions that are open to interpretation through a ruling of the Finnish Tax Administration. The Tax Administration has recently focused on improving cooperation with its customers and has encouraged companies to actively apply for written preliminary rulings and even engage in preliminary discussions concerning more challenging arrangements. We have assisted Finnair and Municipality Finance , among others, in arrangements that involved significant income tax questions, which we resolved by applying for preliminary rulings. In the following, we describe a few of our recent case references involving preliminary rulings.
Case published 20.9.2016
We advised the NATO Innovation Fund as lead investor on Kelluu’s EUR 15 million Series A funding round, with participation from Keen Venture Partners, Gungnir Capital, and Tesi. Kelluu is a Finnish deep tech company operating the world’s largest autonomous airship fleet. We advised NIF on this transaction alongside global law firm Latham & Watkins.
Case published 17.4.2026
Castrén & Snellman advised Nscale, a European AI infrastructure company, in connection with its planned data centre project in Harjavalta, Finland. The facility will be located in the Sievari industrial area. Castrén & Snellman’s advisory role encompassed the negotiation and execution of a site securing and development agreement (SSDA) with Fortum, as well as the preliminary land sale process for the Sievari site with the Town of Harjavalta. Under the SSDA, Fortum supports the advancement of Nscale’s project development, including grid connection design and permitting.
Case published 15.4.2026
We are acting as legal adviser to Taaleri Plc on its acquisition of a 51 per cent ownership stake in Nordic Science Investments Oy (NSI), marking Taaleri’s expansion into deeptech-driven venture capital. Through the transaction, Taaleri broadens its private equity offering into early-stage venture capital funds as well as the commercialisation and scaling of research-driven innovations. NSI is a Finnish venture capital fund manager operating across the Nordic and Baltic regions, focusing on early-stage investments in research- and science-based technologies. Its portfolio companies develop, among other things, health technologies, life sciences, advanced materials and AI-driven solutions. In addition to providing growth capital, NSI supports spin-out companies with strategic guidance, access to networks and assistance in building teams during the early phases of business development. NSI’s first fund, the EUR 45 million NSI Nordic Science I Ky, was established in 2024 and has to date invested in 22 early-stage companies in Finland, Sweden and the Baltic countries. Taaleri is a specialist in investments, private asset management and non-life insurance, with a strong position in renewable energy, bioindustry and housing investments as well as credit risk insurance. Taaleri has EUR 2.7 billion of assets under management in its private equity funds, co-investments and single-asset vehicles, employs approximately 130 people and is listed on Nasdaq Helsinki. The founders of NSI will continue in their operational roles following the transaction. The completion of the transaction is subject to approval by the FIN-FSA.
Case published 13.4.2026