How do I get a total amount spent with each vendor?

Thank you for posting here on the Community page, aztl5838. 

I'll share insight on the type of report you can run to get the total amount spent with each vendor in QuickBooks Online. 

I suggest you run the Expenses by Vendor Summary report. It has the option to display only the total amount paid per vendor.

Here's how:

1. Go to the Reports from the left menu.
2. Enter Transaction List by Vendor in the Search box and select it.
3. On the report page, modify the reporting period. 
4. Change the Display columns by drop-down menu to Total Only.
5. Hit Run report.

If you'll want to see the transactions, you can click the amount for each vendor.

Here's an article you can read to learn more about customizing reports in QBO: Customize your reports in QuickBooks Online.

Check out this article if you want to export reports, lists, and more. It also provides instructions for each type of information you want to export outside the program. Export reports, lists, and other data from QuickBooks Online.

Tap me again should you need further assistance with customizing your reports in QuickBooks Online. I'm always here to assist. Have a wonderful day.