Can I add an other business ? If so, is it an other 50$ per months?

I'd be delighted to assist you today with adding another company file for your other business, Annabelle.

If you have a different business, it is best to purchase a new service so you can track your financial and accounting data properly. Also, the cost of the service depends on the plan you wanted to purchase.

You may review each or our QBO versions from our sales website. There you can see the updated features and discounted pricing by clicking on this link: QBO Canada Plans.

Please come back here if you need assistance with selecting the plan that suits your business type. I'll be right here to provide further guidance. Have a great day!

@annabelle_leblan 

One QBO account is for one company file. You can utilize the class tracking feature in QBO Plus or Advanced to manage branches/divisions. Otherwise, you should open a new QBO account.

https://quickbooks.grsm.io/Canada