Limited Company (Oy) in Finland

An Oy is a legal entity separate from its owners. The company can contract, own assets, incur liabilities and be taxed in its own name. This separation can make an Oy a strong structure where there are multiple owners, employees, investment, external financing or meaningful commercial liability risks.

Limited liability does not mean that personal risk is zero in every circumstance. Personal guarantees, directors' own legal duties, tax or accounting failures and unlawful conduct can still create consequences. Choose the company form based on the scale and governance needs of the business, not only on an assumption of protection from liabilities.

Before opening the incorporation filing, decide who the shareholders will be, the share allocation, board structure, line of business, registered municipality and financial period. With several owners, matters such as voting, decision-making, future funding, admission of new investors and exits should generally not be left entirely to standard articles of association.

A Finnish private limited company can be established with EUR 0 share capital. That does not mean the business needs no start-up funding in practice. Cash needs for deposits, equipment, stock, software, insurance, payroll, accounting and taxes must still be planned separately.

An Oy comes into existence when it is registered in the Finnish Trade Register. In 2026 PRH requires limited-company start-up notifications to be filed through the YTJ online service. The guided set-up package can be used when its standard-structure and identification conditions are met; more complex ownership, capital or articles require the alternative online filing route.

The YTJ filing is more than entering a company name. The memorandum of association, articles, board details, representation rights and relevant persons must be filed correctly. If some persons do not have Finnish personal identity codes, or standard articles are insufficient, the appropriate incorporation route can change.

PRH requires limited companies to report their actual beneficial owners to the Trade Register and keep the information up to date. Correct board details do not replace the beneficial-owner notification. PRH may require a filing even where no beneficial owner exists or can be identified.

When ownership or control changes or a new investor enters, do not stop at updating internal share records. Check whether the Trade Register details and beneficial-owner information must also be updated.

The start-up filing can also be used to apply for Vero's VAT, prepayment and employer registers. Not every company automatically needs the same registrations. The products or services sold, expected turnover, whether employees will be hired and when operations begin affect which registrations are relevant.

Prepayment-register status is not the same thing as the company's income-tax prepayments. Vero can require an estimate of income, expenses and taxable profit and calculate advance tax from that estimate. If actual performance diverges from the estimate, prepayments should be adjusted during the year.

Incorporation costs, shareholder payments or expenses on behalf of the company can arise even before the company bank account is operational. Bring these documents into the accounting process from day one. Mixing company and personal expenditure creates avoidable tax and governance risk.

PRH requires limited companies to file approved financial statements for each financial period; inactivity does not necessarily remove this duty. At incorporation, establish who is responsible for bookkeeping periods, receipts and invoices, payroll and tax filings.

After registration, set up the operating layer: company bank account, payment flows, accounting access, e-invoicing, contract templates and employer insurance where relevant. Banks may request documentation about ownership, beneficial owners, business purpose and expected payment flows.

Clarify who can sign on behalf of the company and which expenditure or decisions require board approval. Particularly with several shareholders, documenting decisions and significant transactions reduces later disputes compared with relying on verbal understandings.

Trade Register details such as address, board, representation rights and beneficial owners must be kept up to date. Tax registrations should also be reviewed when operations change. Do not assume reporting duties disappear automatically merely because the company is inactive.

An Oy cannot simply be closed informally. Stopping business activity and terminating the legal entity are different matters, and liquidation, bankruptcy, merger or other formal routes can become relevant. If the company is no longer needed, coordinate accounting, tax and PRH matters as part of a formal closure plan.