how do I enter the same mortgage payment for 12 months that repeat in QB online version so I do not have to manually enter each month?

I'm here to show you how to create a recurring transaction, @ETL100.

You can use a Sales Receipt for recurring payments instead of an invoice.

Here's how:

1. Click the Plus (+) icon.
2.  Select Sales Receipt.
3. Choose your customer from the drop-down.
4. Pick the maintenance service.
5. Select the payment method.
6. At the bottom of the Sales Receipt screen, choose to Make recurring.
7. Select your Interval.
8. Save the template.

You can check this link for the video tutorial of the process: How to automate payments in QuickBooks.

For future reference, you can check this article for the detailed steps of categorizing transactions in QuickBooks Online: Categorize and match online bank transactions in QuickBooks Online.

Feel free to click the Reply button below if you need further assistance creating recurring transactions. I'm always here to help. have a great day.