When you log in to MyTax, your tax-related letters will change from paper to electronic form automatically. Read more about the changes.
This application form is designed for limited-liability companies (Oy; Ab) and other corporate entities.
If the corporate taxpayer refers to a valid reason, requests for extensions of time can be granted for the submittal of the tax return form or its enclosures. The Tax Administration will not grant the extension without justified reason. This application form must be handed in before the normal deadline date of the tax return concerned.
One copy of this form is used for one application and one corporate entity only. If you have more than one corporate entity requesting extensions, fill out more forms to show each application separately.
Choose your filing method
Send the completed form to:
Verohallinto — Finnish Tax Administration
OCR service of application forms (corporate)
P.O. Box 500
00052 VERO
Download the form
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The online authorisation mandate
You can use the Suomi.fi Authorization to enable you to deal with taxes for another person – including legal persons, companies, other entities – through e-services, over the telephone, or by visiting a service point on their behalf.
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Letters of authorisation on paper
You can receive a letter of authorisation written in the name of a company, to manage a single tax-related issue. If you – either personally or for an organisation that had been authorised – submit tax-related information on paper, a copy of the letter of authorisation has to be enclosed. A letter of authorisation does not provide access to MyTax.
Power of attorney for managing the taxes of a company (3804)
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Key terms:
The Tax Administration can use automated decision-making in the context of resolving tax matters. This means that a decision concerning your tax matter may be based on partial or full use of an automated decision-making system. Read more about automated decision-making at the Tax Administration (only in finnish).
Page last updated 5/2/2017