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14C Tax credit for household costs – certificate issued by the company’s country (3027) Forms

This form is for those who have paid household expenses to a foreign company. Fill in the form to prove that the foreign company has fulfilled its tax obligations. You must use it if you claim credit for expenses paid to a company, and the work was done in an EEA country other than Finland. Some sections of the form must be filled in by the tax authority of the company's country.

Choose your filing method

Send the completed form enclosed with Form 14A to the address on the first page, or drop it off at a tax office. You can also use MyTax to file the information and amounts relating to these two forms.

Download the form

Instructions

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The online authorisation mandate

You can use the feature called “Suomi.fi Authorization” to enable you to deal with another person’s taxes through e-services, over the telephone, or by visiting a service point on their behalf.

See how to grant and request a Suomi.fi authorisation

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Letters of authorisation on paper

You can receive a letter of authorisation from the other person. It will enable you to deal with that person’s taxes on the telephone, by visiting a service point on their behalf, or by submitting information on paper tax forms. To have a letter of authorisation (often called a ‘power of attorney’) does not provide access to MyTax.

Letter of authorisation for tax representation of individual taxpayers

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When is there no need for an authorisation mandate?

The following circumstances are examples of when you can deal with someone else’s taxes with no authorisation.

You have child younger than 18 and you handle the child’s taxes

You are automatically authorised to access MyTax for the child, without an authorisation. Log in to MyTax and select “Act on behalf of someone else”.

Read more about this subject on Suomi.fi.

You are a guardian

You do not need a Suomi.fi authorisation when your continuing power of attorney for being a guardian is officially confirmed, or when you are registered as a private guardian. Log in to MyTax and select “Act on behalf of someone else”.

Read more: “You are a private guardian or have a continuing power of attorney to act as guardian” on the Authorisations page.

Note: If you are a public guardian, in other words, a public official employed by a public guardianship office, you can only use paper forms.

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Key terms:

Page last updated 6/12/2026