QB Issue Resolution:

Progress Invoicing (or partial customer billing) feature is not available in QuickBooks Online.

From Estimate, you can copy to Invoice (all or partial). That’s about it!

Resolution for Issue 'How to create an estimate for the whole job and then bill off of that estimate in percentages over the course of the job?' available: Yes (Solved).
Source: Intuit Community forum.

How to create an estimate for the whole job and then bill off of that estimate in percentages over the course of the job?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for billing
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Error Recovery for billing [Canada]
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