Can my client open a second company subscription?

Hello cedardalemil-gm,

Welcome to the QuickBooks Community. It's great to learn your client is looking to open another account for their business. QuickBooks Online gives you the flexibility you need to easily manage multiple accounts. I'll be happy to provide the info you need so you're on the right track with your work. 

It's important to note that QuickBooks allows for one account/company for each subscription. Your client is more than welcome to set up another subscription using the guidance provided in this article here. Once the client sets up the new account under the same email, they can follow the steps below to switch between their accounts without having to log in and out. Here's how:

1. Select Settings ⚙️.
2. Under Profile/Your Company, select Switch Company.
3. From the list, select the company you want to switch to.

From here, the company you select will now be active. Let me know if you need anything else. I'll be one message away in case you need anything else.