Bill a project by percentage of completion

Objective. Invoice each project phase from its cumulative percentage of completion, deduct amounts already invoiced and preserve a clear reconciliation between the contract budget, progress and issued invoices.

Estimated duration1 h 20

What you will learn

  • Structure the billing budget into stable, identifiable project phases.
  • Calculate the current invoice from cumulative completion rather than the period-only percentage.
  • Understand how previous invoices and a decrease in progress affect the amount to bill.

Recommended workflow

  1. Create the phase budget with consistent sales codes, descriptions, amounts and VAT rules.
  2. Open the dedicated progress-billing workflow for the correct client and matter.
  3. Enter documented cumulative completion for each phase and review the previously invoiced amount.
  4. Verify the difference to invoice, the draft and its appendix, then reconcile the new cumulative total after issue.

Checks before continuing

  • The sum of phase budgets matches the contractual billing basis.
  • Each completion percentage is supported by an approved business source.
  • A negative difference is reviewed as a potential credit note and is never validated automatically.

Related training :