How can I create an Average days to pay report?

An Average days to pay report is unavailable in QuickBooks Online, @Paula J. Not to worry, I've got some workaround for you.

You can generate a similar one by exporting reports to Excel. This spreadsheet software program allows you to calculate values without Intuit's support in formulas. To proceed:

1. Go to Reports.
2. Search for and open the report you'd like to view.
3. Press Export and click Export to Excel.

Additionally, consider using a third-party app. Please check out this page for the list of applications you can integrate with us: QuickBooks App.

Save these resources that will guide you in personalizing reports and keeping their current customization:

• Customize reports in QuickBooks Online
• Memorize reports in QuickBooks Online

Feel free to comment in this thread again if you have any follow-up questions. I'll be here to assist you more. Have a great day ahead.

@Paula J  RE: How can I create an Average days to pay report?...I know it was possible on Desktop, why not qbo? 

That's a very good question!

Comparing QB Desktop reports to QB Online reports (and many other features) is like comparing a Rolls Royce to a Chevy.

QB Online isn't really designed for anyone with more than the most basic of needs. So, if you set your expectations very low, only then will you be satisfied.