Compliance
Scope 3 emissions reporting: what regulators actually require
| Regime | Who is in scope | What Scope 3 requires |
|---|---|---|
| CSRD / ESRS E1 (EU) | Large EU companies and listed SMEs, phased from FY2024 | Material Scope 3 categories, methods and boundaries disclosed |
| IFRS S2 / ISSB | Companies in adopting jurisdictions | Scope 3 with category breakdown, after a one-year relief |
| California SB 253 | Companies over $1B revenue doing business in CA | Scope 3 phased in after Scopes 1 and 2, with assurance to follow |
| Customer questionnaires | Any supplier to a reporting company | Your footprint becomes their category 1; expect data requests |
The common thread is not precision, it is defensibility. Every regime accepts estimation, including spend-based estimation, in early years. What they do not accept is a number nobody can reproduce: which lines were included, which factor was applied, who changed the method between years. That lineage is the product of disciplined carbon accounting software, and it is what a consulting spreadsheet loses the day the engagement ends.
A reporting-ready Scope 3 workflow
- 01 Screen the full AP export spend-based to find material categories (see the 15 categories).
- 02 Set the boundary and document exclusions with reasons; immaterial categories are allowed to be excluded, silently missing ones are not.
- 03 Upgrade the top categories to activity or supplier data, keeping the method per line.
- 04 Freeze a baseline year, version every factor and method change, and keep restatements as first-class events.
- 05 Draft the basis-of-preparation note alongside the numbers, not the night before filing.
Our demo runs step 1 on real data in about a minute and drafts the note in step 5; the planned platform carries the rest. The wider disclosure stack is covered on CSRD reporting software and ESG reporting software.
Live demo · Scope Classifier
No signup neededSee your own spend classified to GHG Protocol scopes in about a minute.
See your own footprint classified in about a minute.
Run the live demo on a sample or on your own spend lines. If it earns it, request early access.