Hi there, @SaraG.

I'm here to share some information about uploading or importing Estimates in QuickBooks Online (QBO).

As what @AlcaeusF mentioned, at this time QBO only supports custom imports of invoices. Though estimates may have been available at some point, they are no longer.

I can see how this feature would be helpful for you and your business and I encourage you to submit feedback. These requests and suggestions are forwarded to the Product Development Team for consideration in future updates.

This can be done directly through your account by clicking the Gear icon in the top right corner, then select Feedback or by going to the following link: https://feedback.qbo.intuit.com/. I'm going to submit feedback from my side as well.

That's it! Please don't hesitate to let me know if you have any questions or I can be of additional assistance. I'll be here to help.