What is a business ID and how can I activate my old business ID?

The business ID is for a company a bit like a personal identification number for a person - it is used to identify companies from each other in official contexts. Every new company receives a business ID from the Finnish Patent and Registration Board or the tax authority. The business ID consists of seven numbers, a hyphen and an eighth number. The business ID looks like this, for example: 1234567-8.

A person can only have one business ID
A business name entrepreneur or a light entrepreneur with a business ID can only have one business ID and it is always personal. When your business ends or is put on hold, the business ID will still remain reserved for you. If at some point you want to keep trying, you can just activate your old business ID.

If you received a notification when you registered for our service that you already have an existing but discontinued business ID, activate it according to the instructions below. You can find the old business ID at OmaVero or Suomi.fi.

You can activate your business ID with the YTJ form here. Fill in the following information:

• Define the fiscal year as the calendar year.
• Join the advance collection register.
• Join the VAT register and select an annual declaration as the VAT period.

After activation, you can register for the UKKO service with your business ID and use the service.

Where can I find my old business ID to activate the UKKO service?

Sometimes it can be a long time since the end of business operations and the old business ID is no longer stored. You can find your business ID in the following ways, for example:

• Search for your business ID with the name of your old company in YTJ's company search.
• Log in to the YTJ service with your online banking credentials and check the business ID from your own information.
• You can also see your business ID in the company establishment notice, if you have it on file.
• Check OmaVero or Suomi.fi.