Finland is one of the most business-friendly countries in Europe, and setting up a limited company here is more straightforward than many founders expect. An osakeyhtiö, or Oy, is the most popular business structure in Finland for good reason: it separates personal and company liability, offers flexibility in ownership, and signals credibility to clients and partners. Whether you are a first-time entrepreneur or an international founder looking to establish a Finnish limited company, understanding the process from start to finish saves time, money, and unnecessary stress.
This guide walks through every key stage of Oy company setup in Finland, from the groundwork you need before registering to the ongoing compliance obligations that keep your company in good standing. We will also highlight the most common pitfalls so you can avoid them from day one.
What you need before registering an Oy
Before you touch a single registration form, a handful of essentials need to be in place. Getting these right upfront prevents delays and costly corrections later in the process.
First, every Oy must have at least one shareholder, who can be either a private individual or a legal entity. There is no nationality requirement for shareholders, so foreign founders are fully eligible. The company also needs at least one board member, and if the board has fewer than three members, a deputy member must be appointed. All board members must have a Finnish personal identity code or a foreign equivalent registered in Finland, which means international founders sometimes need to handle this step separately before proceeding.
You will also need to decide on a company name that complies with the Finnish Trade Register rules. The name must be unique, not misleading, and must end with “Oy” or “osakeyhtiö.” It is worth checking name availability through the Business Information System (YTJ) before committing to anything. Finally, prepare a valid address in Finland for the registered office, as this is a legal requirement under the Finnish Companies Act (osakeyhtiölaki, 624/2006).
Choosing the right share capital and ownership structure
One of the most significant reforms in recent Finnish company law is the removal of the minimum share capital requirement. Since 2019, a private limited company in Finland can be incorporated with as little as one euro in share capital. This change lowered the barrier to entry considerably, though the share capital amount still matters in practice.
The share capital you choose affects how shares are divided among founders and future investors. If you plan to bring in co-founders or outside investment, it is worth thinking carefully about share classes, voting rights, and how equity will be distributed from the outset. The Articles of Association (yhtiöjärjestys) define these rules, and once the company is registered, changing them requires a formal shareholders’ meeting and an amendment process.
For straightforward sole-founder setups, a simple share structure with a single class of shares is usually sufficient. For companies expecting growth, multiple rounds of funding, or complex ownership arrangements, it is worth investing time in structuring ownership correctly before registration rather than restructuring later. Getting this right early is one of the areas where working with an experienced partner makes a real difference.
How to register your Oy through the Business Information System
Registering an Oy in Finland is handled through the Business Information System, known as YTJ (yritys- ja yhteisötietojärjestelmä), which is jointly maintained by the Finnish Patent and Registration Office (PRH) and the Finnish Tax Administration. The process can be completed online or by submitting paper forms.
Online registration via the YTJ portal
The fastest route is the online registration service at ytj.fi. The process involves completing the establishment notification (Y1 form), attaching the Articles of Association, and paying the registration fee. As of 2026, the registration fee for an Oy submitted electronically is 240 euros, while paper submissions cost more and take longer to process. Processing times for online applications are typically a few business days, though they can be longer during busy periods.
What the Articles of Association must include
Under the Finnish Companies Act, the Articles of Association must state the company’s trade name, the municipality of the registered office in Finland, and the line of business. While the law permits very minimal articles, many founders include additional provisions covering share transfers, redemption clauses, and decision-making procedures. These additions are optional but can prevent disputes down the line, particularly in multi-founder companies.
Once the PRH processes the registration, the company receives a Business ID (Y-tunnus), which is required for virtually every subsequent administrative step, from opening a bank account to signing contracts.
Tax registrations and mandatory obligations after incorporation
Receiving a Business ID does not automatically enroll the company in all the tax registers it needs. Several registrations must be handled separately through the Finnish Tax Administration (Vero), and missing them can result in penalties or disrupted operations.
The most important registrations to consider immediately after incorporation include:
- VAT register (arvonlisäverorekisteri): Mandatory if annual turnover is expected to exceed 15,000 euros (the threshold in 2026). Voluntary registration is also possible below this threshold, which can be beneficial for reclaiming input VAT.
- Employer register (työnantajarekisteri): Required if the company pays regular salaries. This triggers obligations around withholding tax, pension contributions (TyEL), and accident insurance.
- Prepayment register (ennakkoperintärekisteri): Joining this register signals to clients that the company handles its own tax prepayments, which is often a practical requirement when working with Finnish businesses.
All of these registrations can be submitted simultaneously with the establishment notification through YTJ, which saves considerable time. It is strongly recommended to handle them at the same time rather than returning to complete them later.
Common mistakes when setting up an Oy in Finland
Even with a clear process in place, founders regularly run into the same avoidable errors. Knowing what to watch for makes the whole experience much smoother.
Skipping the Articles of Association review. Many founders use a template without adapting it to their specific situation. A generic set of articles can leave gaps around share transfers or decision-making that become problematic as the company grows.
Forgetting to register for VAT or the employer register. These are separate steps from company registration, and overlooking them leads to compliance gaps. The Finnish Tax Administration can impose penalties for late registration, and retroactive VAT registration is not always straightforward.
Mixing personal and company finances. Once the Oy is incorporated, all business transactions must flow through the company account. Using personal accounts for business purposes, even temporarily, creates accounting and tax complications that are time-consuming to untangle.
Underestimating the importance of a shareholders’ agreement. The Articles of Association are a public document, but a separate shareholders’ agreement (osakassopimus) can address sensitive matters like exit provisions, non-compete clauses, and dispute resolution privately. Many founders skip this step and regret it later.
Ongoing compliance requirements for a Finnish Oy
Incorporation is the beginning, not the end. A Finnish Oy carries a set of annual obligations that must be met to remain in good standing with the authorities and avoid penalties.
Every Oy must hold an Annual General Meeting (yhtiökokous) within six months of the end of the financial year. At this meeting, shareholders approve the financial statements, decide on profit distribution, and confirm the board of directors. The financial statements must be filed with the PRH within eight months of the financial year end, and companies meeting certain size thresholds are required to have their accounts audited under the Finnish Auditing Act (tilintarkastuslaki, 1141/2015).
On the tax side, corporate income tax in Finland is 20% on taxable profit. VAT returns are filed monthly, quarterly, or annually depending on turnover, and employer contributions including pension insurance and social security payments follow their own reporting calendar. Staying on top of these deadlines is essential, as late filings attract automatic penalties from the Finnish Tax Administration.
Keeping your bookkeeping current throughout the year rather than scrambling at year-end is the single most effective way to manage these obligations without stress. This is where we at Firmally genuinely help: we handle the accounting, tax filings, and compliance calendar so founders can focus on building their business rather than managing paperwork. If you are setting up or already running a Finnish Oy and want a reliable partner to keep everything on track, we would love to hear from you. Reach out to us and let us take the administrative weight off your shoulders.
