What moves the fee
Boundary
Number of entities, sites, jurisdictions and reporting languages.
Maturity
First-time build versus established controlled process.
Technical depth
GHG, Scope 3, scenarios, financial effects, engineering or assurance.
Data condition
Availability, evidence, reconciliation and rework.
Engagement
Interviews, workshops, surveys and site visits.
Review
Board cycles, design, revisions and publication support.
Questions that expose the difference
- Which deliverables and disclosures are included?
- Who performs and reviews each workstream?
- What data cleaning, calculation and evidence review is assumed?
- How many workshops and revision rounds are included?
- What is expressly excluded or priced as optional?
- How are delays and scope changes handled?
Official sources used for this guide
Source position reviewed 2 August 2026. Always confirm the latest rule, standard and implementation guidance for your organisation.