Electronic tax mail for companies, and how to submit an email address in MyTax

What does electronic tax mail mean?

Electronic tax mail means that the letters, decisions and other documents that the Tax Admintration sends arrive in MyTax only. You will no longer receive them on paper. If you have the right to sign for the company or if the company has granted you the Managing of tax affairs authorisation, submit your email address in MyTax, and you will be notified by email whenever there is a new letter or other document for the company in MyTax.

When do we start receiving tax mail in MyTax only?

When you manage taxes of a corporate entity, a benefit under joint administration, a partnership or a deceased person’s estate that has a Business ID in MyTax after 1 June 2026, tax mail starts to be sent electronically to MyTax only. However, the Tax Administration may still send paper letters in certain situations. 

If tax mail has been previously received on paper, it will be replaced by electronic tax mail as follows.

1. You must have the right to sign for the company or the Managing of tax affairs authorisation.

2. Log in to MyTax and select Act on behalf of a company. 

3. If you are authorised to act on behalf of more than one company, a company will start receiving its tax mail electronicially when you select the company in question from the list and manage its taxes in MyTax. You will receive a message in MyTax saying that electronic tax mail has been selected.

4. To receive notifications about the company’s tax matters to your email, make sure your email address is on the list of Email addresses of people managing taxes (the Taxpayer details tab). The email address must also be found in the same format in the company’s Your own details section. If you have a limited authorisation, you cannot receive information about the company’s taxes. 

   • When you submit your contact information, you will receive notifications about all the company’s tax matters in MyTax. 
   • If you do not want any email notifications about the company’s affairs, delete your email address from the list of Email addresses of people managing taxes.
   • If you want to receive only certain types of notifications relating to the company, select the topics in your email software.  

5. The change will take immediate effect: the company’s tax mail will be delivered to MyTax only and no decisions or letters will be sent by letter post. You can find the mail delivery method under Tax mail / Delivery method for decisions and letters on the Taxpayer details tab.

If the company has previously received electronic tax mail, there will be no changes. Note, however, that you will find the email address on the Email addresses of people managing taxes list in future, where it used to be in the Delivery method for mail section.

You are an accountant managing a limited liability company’s taxes. You log in to MyTax to file the company’s VAT return on or after 1 June 2026. After logging in, click Act on behalf of a company and select the limited liability company on the list. You will receive a notification saying that the company’s tax mail will be sent electronically to MyTax in future. MyTax will guide you to submit your email address so that you will receive a message when there is new tax mail for the company in MyTax. 

When the company’s managing director logs in to MyTax later and acts on behalf of the company, they will not see the notification that the mail delivery method has changed. However, they can add their email address to the company’s details, in which case they too will be notified when there is new tax mail for the company in MyTax. The email address is entered in the Email addresses of people managing taxes section on the Taxpayer details tab. 

Note: If you have not yet activated personal Suomi.fi messages, they will be activated when you log in. Read more: Suomi.fi messages and electronically provided tax mail – individual taxpayers.

A forestry partnership has three shareholders, but you are the only one who has the Managing of tax affairs authorisation. Log in to MyTax and select Act on behalf of a company. You will be redirected to the forestry partnership’s details in MyTax. At the same time, the forestry partnership’s mail delivery method will be changed to electronic. 

MyTax will guide you to submit an email address to which the Tax Administration can send a message when there is new tax mail for the forestry partnership in MyTax. If convenient, you can submit the email address of each shareholder in MyTax so that all shareholders will be notified when there is new tax mail for the forestry partnership in MyTax. However, only you can read the tax mail because you are the only one with the Managing of tax affairs authorisation. 

The change will take immediate effect. The Tax Administration will send a message when there is new tax mail for the forestry partnership in MyTax and the mail will no longer be delivered on paper. 

Note: If you have not yet activated personal Suomi.fi messages, they will be activated when you log in. Read more: Suomi.fi messages and electronically provided tax mail – individual taxpayers.

Keep the email addresses in MyTax up to date

If you have the right to sign for the company or the Managing of tax affairs authorisation, you can add and delete email addresses on the company’s Taxpayer details tab in MyTax. 

It is important to add an email address to MyTax, because the Tax Administration will send a notification to email when there are new letters, decisions or other matters requiring attention in MyTax. If you do not submit an email address, you will learn about new tax mail only when you log in to MyTax.

The company is responsible for keeping the email addresses up to date. Make sure that the list contains only email addresses to which notifications about tax mail are to be sent. Delete any unnecessary email addresses. Make sure to update the email addresses especially when the persons in charge of the company, association or foundation change or when authorised persons change.

How to update email addresses

1. Log in to MyTax.

2. Go to the company’s information and select the Taxpayer details tab.

3. Go to Email addresses of people managing taxes and click the Update email addresses button.

4. Add or change email addresses to which the Tax Administration will send notifications when there are new letters, decisions, information or tasks for the company in MyTax.

   Remember to delete your email address from the list before your authorisation or right to act on behalf of the company ends or if you no longer want to receive notifications about the company’s taxes to your email.

   If you add or delete an email address, the Tax Administration will send you an acknowledgement of the change.

5. After adding your email address, you will receive email notifications about all the company’s tax matters.

Having an authorisation to act on behalf of a company

When you have the Managing of tax affairs authorisation and you act on behalf of a company, an association, a foundation, a partnership, a benefit under joint administration or a deceased person’s estate that has a Business ID, the tax mail of the party you represent will be sent to MyTax in future. 

When you have the Managing of tax affairs authorisation and you act on behalf of a self-employed individual, an agricultural operator or a forestry operator in MyTax, you can request to receive a notification to your email when your client receives a new letter in MyTax. Even if you request to receive notifications to your email, it has no effect on the tax mail delivery method of the person whose taxes the notifications you receive concern. Read more: Suomi.fi messages and electronically provided tax mail – individual taxpayers.

If a company wants to receive tax mail on paper, you can notify the Tax Administration that the company opts for paper tax mail. Submit the notification on the Taxpayer details tab in MyTax.

Huomio osio alkaa

Self-employed individual, agricultural or forestry operator: Manage all your taxes in MyTax through the Manage your tax matters link. This also applies if you have a Business ID and you have granted yourself the Managing of tax affairs authorisation. However, if you have an authorisation to manage a limited liability company’s taxes, for example, use the Act on behalf of a company link in MyTax.

Huomio osio päättyy

If you have an authorisation other than Managing of tax affairs that allows you to use MyTax, you cannot change the tax mail delivery method and your use of MyTax does not change the company’s tax mail to electronic.

When you have a limited authorisation, you cannot see or edit email addresses saved in the company’s taxpayer details. However, a person who has an appropriate authorisation can add your email address to the company’s details if necessary. After that, you will receive all notifications about the company’s tax matters to your email but you cannot see all the matters related to them in MyTax.

If a company has a representative recorded in the Tax Administration’s register of taxpayers, paper mail will always be sent to them.

If the company wants to receive tax mail on paper even though an authorised person manages the taxes in MyTax, the authorised person – provided that they have the Managing of tax affairs authorisation – can report that the company opts to receive tax mail on paper.

When your authorisation or right to act on behalf of a company is ending

When your authorisation ends, it does not mean that you would automatically stop receiving email notifications. You yourself and the company must see to it that the list of email addresses in the company’s taxpayer details in MyTax is always up to date.
If you have authorisations and one or more of them are ending, do as follows:

1. Log in to MyTax, go to the company’s Taxpayer details tab and delete your email address from the list of Email addresses of people managing taxes.
2. You will receive an email notification saying that your email address has been deleted from the company's details.
3. After this, you will no longer receive email notifications about the companies whose taxes you are no longer authorised to manage.

After your authorisation or right to act on behalf of a company has ended

When you are no longer authorised to act on behalf of a company, you cannot make changes to the company’s email notification settings in MyTax.

The email addresses can be updated in MyTax only by a person who has the right to sign for the company or has the Managing of tax affairs authorisation. They can delete your email address from the company’s Taxpayer details.

Moving back to paper tax mail

If a company wants to re-start receiving the Tax Administration’s letters on paper, a person who has the right to sign for the company or the Managing of tax affairs authorisation can report that the company opts for tax mail on paper. This can be done on the Taxpayer details tab in MyTax. 

The selection of tax mail on paper is valid for 60 days. During the period, you can use MyTax and the company will receive its tax mail on paper. After the 60-day period, tax mail will again be delivered to MyTax only if the company’s taxes are managed in MyTax.

How to find decisions and letters

1. Go to MyTax and log in if you are not logged in yet (a new window will appear)

2. Select the Communication tab.

3. Under Decisions and letters, select Open decisions and letters.

4. All the decisions and letters you have received during the past 12 months are listed on the page.

5. To find decisions and letters that are over 12 months old or that have been opened or archived, use the search function.

6. The search will return all the tax decisions issued to the company.

Letters related to tax audit reports in MyTax

Letters related to tax audit reports are often listed as separate PDF files in MyTax. The letters form the following entity, although their order may be different in MyTax:

1. Hearing on the tax audit report
2. Summary of the tax audit report
3. Tax audit report
4. List of findings of the tax audit report.

After the hearing, you will receive a new set of letters in MyTax:

1. Decision on adjustment of income tax, tax audit
2. Decision on self-assessed tax, tax audit
3. Summary of the tax audit report
4. Tax audit report
5. List of findings of the tax audit report.

If the tax audit report is sent to you only for information, you will find the following letters in MyTax:

1. Summary of the tax audit report
2. Tax audit report.

Notifications on the Tasks tab

On the Tasks tab in MyTax, you can see your current matters, such as:

• You have received a new decision or letter in MyTax.
• We need more information from you for tax purposes.
• Information about alternative ways of taking care of tax matters, such as the use of e-invoicing.

When you click a task, MyTax will move you directly to the correct section. After that, the task is no longer shown on the Tasks tab.

Delete and restore tasks

If you want to delete a task shown on the Tasks tab, click the X next to it.

You can see the tasks you have deleted when you click the See deleted tasks link at the end of the page. On the page of deleted tasks, you can restore tasks to the Tasks tab: click “Restore task” at the task you want to restore.

Note that a task you have deleted will reappear on the Tasks tab when there is new information for you in MyTax. For example, if you have deleted the task regarding unread letters, it will reappear when you receive a new decision or letter in MyTax.