How can I open a new firm

I can assist you in adding another company to your QuickBooks Online account, Elissar.

To create a new company, you'll need to sign up for a separate QuickBooks Online account subscription for each company file.

To add another company to your email address, log in to your existing company account while creating a new account and click Add another company.

Here's how:

1.  Visit the QuickBooks pricing page and select the subscription option you want for this new company.
   1. Choose the plan you'd like to have.
   2. On the Sign-in page that appears, enter your email address.
   3. Click the Create a new company button. 
   4. Follow the prompts to finish creating the account. 

Check out this article for more information about managing multiple company files: Create or add another company file to QuickBooks Online. 

Once you have created an account, you can easily switch between companies. For more information on how to switch companies, please refer to this, how do I switch companies article for more information.  

And that's it! If you have any more queries concerning adding a new company, then let me know. I'm always there to help in any manner that I can. I hope you have an amazing day!