Hi there, @scottice. I acknowledge how relevant this feature is when handling your estimates in QuickBooks. I'll help you send a feature request to our product development team.

Currently, the option to show payment terms on estimates is unavailable. I suggest you send feedback regarding the feature request to our Product Developers. They can consider adding them to our future product updates.

Here's how:
 

1. Access your QuickBooks Online company.
2. On the top right corner, click the Gear icon.
3. Under the Profile column, select Feedback.
4. Enter a brief description of your feature request.
5. Once you're ready, click Send.

In the meantime, you'll want to go to the QuickBooks App Center website to search for a third-party application that lets you add payment terms to your estimates.

You can also convert an estimate into an invoice in QuickBooks Online.

For further information, if you want to track your transactions, please visit this article: Run reports in QuickBooks Online.

Feel free to drop a comment if you have further questions or concerns regarding managing payments in QuickBooks Online. We're always here to assist you.