Thanks for chiming in on this thread, @Brenda D.

In QuickBooks Online (QBO), the invoice date determines the posting period of the invoice transaction into the Profit and Loss report. The option to use the service date as the posting period for the revenue is unavailable.

I recognize how beneficial it is for you and your business that an invoice date should determine the due date, and the service date should be the posting date of the revenue. For now, I'd recommend sending a feature request to our Product Development Team. Check out this article for your reference: How to Submit Feedback.

Moreover, you can check out the detailed steps in this article to learn more about personalizing and adding specific info to your invoice and other form styles in QBO: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Please post again or comment below if you have any concerns about managing invoices in QBO. I'm always here to lend a helping hand. Stay safe!