Source: https://www.quantsurv.com/resources/glossary/conclusive-evidence-clause
Content format: Markdown version of the public page.
Content reviewed: 2026-09-30

# Conclusive evidence clause: definition and example

A clause that makes a final certificate or final account conclusive once a set time passes without a challenge.

By [Jack Butler-Kettle](<https://www.quantsurv.com/about#who-we-are>) · Updated 30 September 2026

Guidance for England and Wales. Check the contract, amendments and facts that apply to your job.

## What it means in practice

Some contracts give a certificate or statement a special evidential effect after a stated period. The document, the issues covered and exceptions depend on the clause. The action needed to challenge it may be more specific than sending a general email of disagreement.

Identify the exact trigger, deadline and required action promptly. [Final account recovery](<https://www.quantsurv.com/final-accounts/services/final-account-recovery>) includes organising disputed account items; urgent procedural questions may need legal advice.

## Worked example

### The facts

A subcontractor receives a final statement with wording referring to a challenge period.

### What happens

1.  It locates the incorporated clause and records when the statement was received.
    
2.  It obtains advice on what must be done before the relevant period expires.
    

### What this shows

A diary entry and an informal objection are not assumed to satisfy the contractual challenge procedure.