Merging all files/folders into one company

You may have 2 ways to merge 2 QBO accounts:

1. Signup for a new QBO Plus or Advanced account

https://quickbooks.grsm.io/US

https://quickbooks.grsm.io/us-promo

then utilize a 3rd party tool to migrate data from old accounts to the new one.

https://get.transactionpro.com/qbo

You may also need to setup class tracking and/or location to separate transactions.

https://quickbooks.intuit.com/learn-support/en-us/help-article/class-list/get-started-class-tracking...

https://quickbooks.intuit.com/learn-support/en-us/help-article/track-location/set-use-location-track...

As an additional option, utilize the backup restore app during the migration process.

https://partnerwithus.rewind.com/quickbooks

2. Purchase a 3rd party service to merge them.

Thanks for checking this out in the Community, Terri56. 

Allow me to share details to answer questions. At the moment, we're unable to merge two separate QBO accounts. Please take a look at this article for additional details: Merge Companies, Data Files or Copy Lists.

Similar to Fiat's suggestion, you can explore third-party apps that offer merging of accounts. Here's how:

1. Go to the Apps menu and proceed to the Find Apps tab.
2. Click the drop-down list for Browse category and select Sync Data.
3. Choose an app and click on it to view more details and what they offer.

Let me share these articles for additional references about using third-party apps: 

• Apps That Work With QuickBooks Online
• Transfer App Ownership or Disconnect Apps

Lastly, you can also follow these steps if you want to reach out to our phone support team: 

1. Click the Help menu in the upper-right hand corner of your QBO account.
2. Type in "Talk to a human" in the chatbox, then press Enter. Then, type in the same keyword and press Enter one more time.
3. Select No.
4. Choose between Chat with us or Have us call you.

Let me know if that answers your question about combining two QBO accounts. You can also post more questions if you need anything else.