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Section 5— Payment

Clause 50.6

Correction of Incorrect Assessments

Purpose

The Project Manager corrects any incorrectly assessed amount due in a later payment certificate. Corrections are applied retrospectively in the subsequent certificate.

Practical Application

If the PM discovers an error in a previous assessment, it is corrected in the next certificate. This applies to both overpayments and underpayments.

Common Pitfalls

Corrections can be made at any time, potentially disrupting cash flow. The Contractor should track cumulative payments and challenge corrections that appear unreasonable or untimely.

Related Clauses

Clause 51.1Clause 51.4

📖 This summary is for reference. For the full, authoritative NEC4 contract text — including all amendments, guidance notes, and flow charts — visit the official NEC website.

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⚠️ This commentary is for reference only. Always refer to the full NEC4 contract text and seek professional legal or contractual advice for your specific project.