Past payroll posted to cash account instead of checking account but I can't change accounts after the fact. How do I change accounts?

Hello, sg0749. 

You'll want to create a journal entry to transfer the payroll to the right account. Let me show you how.

Before doing so, I recommend getting in touch with your accountant for additional guidance in recording this. This way, we'll ensure the accuracy of your accounts after making these changes.

In your QuickBooks Online (QBO): 

1. Go to the + New button.
2. Select Journal entry.
3. Fill in the needed details to create your journal entry.
4. Click Save and close when done.

Here's an article you can read to learn about the basic in creating a journal entry: Create a journal entry in QuickBooks Online.

Once done, run a payroll report to check if the amounts are accurate in your QBO. Also, I encourage checking our Employees and payroll taxes page for reference. There, you can read some of our great articles and learn some tips in managing your payroll. 

If you have any questions or clarifications, let me know by leaving a comment. I’m more than happy to help. Have a great day!