How do I record payments to personal banking account that were never deposited into my business bank account?

Hello, davisb.

You'll need to set up one Bank account in QuickBooks so you'll have an option to record your income. Also, you don't necessarily need to link the Bank Feeds to QuickBooks. The steps below will guide you through the steps on how to set this up: 

1. Click the Accounting.
2. Select Chart of Accounts. Then tap New.
3. Fill in all the information needed.
4. Press Save, once done.  

Once you've created the account, you'll be able to record the income with the right payment account in no time. 

I've got some resources that you might need for additional information on how to deposit payments into the Undeposited Funds to account in QuickBooks Online. 

If you need further assistance, drop a message in the comment section. I'll be happier to help. Have a nice day!