The client paid less than the invoice. How should the project respond?

Unresolved payment discrepancy

Coordinate with finance to distinguish timing, deduction, dispute, and error. Preserve the delivery and acceptance evidence while authorized commercial staff resolve the receivable.

What to do now

  1. Confirm the received amount and reference
  2. Identify the reason for the difference
  3. Provide relevant project evidence
  4. Track the agreed resolution with finance
Recommended action flow for unresolved payment discrepancy: Confirm the received amount and reference then Identify the reason for the difference then Provide relevant project evidence then Track the agreed resolution with finance. Escalate when the shortfall is material or requires a contractual remedy.

When to escalate

Escalate when

The shortfall is material or requires a contractual remedy.

Who decides

The budget owner and authorized finance representative

Example

A partial payment is linked to a disputed deliverable and reviewed against its acceptance evidence.

Mistake to avoid

Editing the original invoice informally to match the payment.

Prevent a repeat

Review remaining cost and commitments, not only money already spent; reconcile with the authorized finance source.

Related cases

Practice references