I have an existing QB account for our company. I would like to add a second company to this account. How do I create the second company?

One QBO account is for one company file. You need to sign up and pay for the second QBO account. Another option, use old QB Desktop with a non subscription license to manage multiple company files.

Each subscription corresponds to one company file, so you'll need to sign up for a new QuickBooks account for the second one, mccallisters8622. Let me elaborate below.

Register for a new QuickBooks Online account using the same sign-in info as your existing company. It allows you to access them under one Intuit account. Follow these steps:

1. Visit the QuickBooks pricing page and select Choose Plan.
2. Add Payroll if necessary.
3. On the Checkout page, do not input new credentials on the Create an Intuit Account window. To associate the second company with your existing email address, click Sign-in beside the Already have an account?
4. Enter the same Email address, then click Sign In.
5. Follow the onscreen instructions to proceed.

After that, you can quickly Switch Company files through the Gear icon.

On the other hand, are you referring to other plans as the upgraded QuickBooks service? If so, keep in mind that upgrading and backing up your existing company data won't enable you to include an additional company under a single subscription.

You might also find this article helpful to learn how to manage multiple company files: Create or add another company file.

Once you're all set, get started and adjust settings after you sign up to configure your settings and prepare for business tasks.

Feel free to post again if you have further questions about adding another account or navigating within QuickBooks. I’ll be here to ensure a smooth and efficient use of the platform.