Instructions for MyTax and frequently asked questions

You can use MyTax on a computer or a mobile device, such as a tablet or a smartphone. You will also need internet access and a web browser. Make sure cookies and JavaScript are enabled.

For the best MyTax user experience, use the latest version of any of the most common browser software:

• Microsoft Edge
• Google Chrome
• Apple Safari
• Mozilla Firefox.

Logging in to MyTax using Suomi.fi e-identification on older browsers and operating systems has been technically blocked. Read more on the website of the Digital and Population Data Services Agency.

Whether it has to do with the pre-completed tax return form or with an application form for a tax card, you can enter information in MyTax directly to the specific lines, without having to fill out a tax form.

For example, if you are going to

• complete your income tax return with information on the rent you have received from a tenant, MyTax does not have a traditional tax form for this – Form 7H, Form 7K or Form 7L – because it has the Rental income sub-heading.
• complete your income tax return with the capital gain you received when you sold a piece of property or an asset, the MyTax section you should go to is Capital gains or Profits from selling securities – the traditional capital-gains Forms 9 and 9A are not there.

When you are logged in to MyTax to report additional income or additional deductions for your pre-completed tax return or for some other tax return,

• just go to Pre-completed income and deductions. This is where you can fill in more amounts and other information in order to add to the pre-printed amounts that you see on your return. This is useful when some, but not all deductions, for example, are included on your return relating to your rental income, etc.
• The Other income section is useful when no pre-printed amounts are found − just select Yes under Rental income or Capital gains, as appropriate, to report the income you have received.
• Go to Other deductions to add any deductible amounts that are not pre-printed. Select Yes under Travel expenses or Credit for household expenses as appropriate.

Do not forget to finish with Preview and send.

When you submit an application for a new tax card or when you request a calculation for prepayments, you can add relevant amounts in MyTax the same way.

Instructions for MyTax

When you are filing your tax return or other tax information in MyTax, the details you enter are not automatically saved.

Every time you add, delete or edit something, remember to click Save as unfinished or Submit at the end. This saves the details you have entered.

You are automatically logged out of MyTax if you have not clicked on any links in the service in the last 60 minutes. MyTax displays a warning 5 minutes before you are logged out. If you click the link in the warning, you can keep using the service without having to log in again.

If you get a notification saying “Your session has expired” when you are in MyTax, your internet connection may be at fault. The e-service may think you are using MyTax with multiple IP addresses.

For example, this can happen if you use the same device on a fixed broadband connection and in a mobile network. If the connection type changes, your IP address may also change. Because you can only access MyTax from one IP address at the same time for security reasons, MyTax will automatically log you out.

In this case, you or your internet service provider should change your connection settings to always access MyTax from only one IP address at a time.

When you have unread letters in MyTax, you can see a notification about them on the Tasks tab. If you want to delete the task in question, click the X next to it.

The task regarding unread letters will reappear on the Tasks tab when you receive new letters in MyTax.

You can always see all your letters on the Communication tab. Under Decisions and letters, select Open decisions and letters.