Thanks for getting back here in the thread, Prostang. I appreciate the screenshot you've provided to understand the process better. In QuickBooks, deducting the billable amount from your estimate is unavailable. Let’s discuss the details below.

Deducting the billable time from your estimates is not possible since billable entries are used to charge expenses to your customers and estimates are only used to create a bid, proposal, or quote. The estimate can later be turned into a sales order or an invoice.

Based on the screenshot you provided, QuickBooks calculates the amount based on the dollar value rather than the rate. Since the current amount is zero, it will continue to display as $10,000 unless you adjust the billable entry to a negative value; however, making the billable amount negative is not possible.

Moreover, you can check out this article for detailed information about adding billable hours to an invoice: Enter billable time by job in QuickBooks Online.

Additionally, I've added this article if you want to get a quick overview of your business performance in QuickBooks, here's an article you can check: Run a report in QuickBooks Online.

Keep us posted if you have further concerns or questions about deducting the billable time amount from your estimates. The Community is always here to lend a hand.