Carbon Accounting Software for ASX 200 Companies

ASX 200 companies signed the first AASB S2 disclosures in FY2025 and are now heading into year two under reasonable assurance for Scope 1 and 2. Directors sign the sustainability report with their duties of care and diligence under Corporations Act section 180 in play. The audit conversation is no longer about whether the number is roughly right; it is about whether every kilogram traces back to a source document under ASSA 5010 walk-through testing. Carbonly is built for that specific bar - with a source-document audit trail on every emission record, factor version pinning per NGA edition, and JV consolidation for the joint venture structures that dominate resources and infrastructure.

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What changes for asx 200 companies

Director-signed AASB S2 disclosure with a per-line audit trail from the disclosure back to the supplier PDF, so the evidence behind each figure is one click away, not a week of file archaeology
ASSA 5010 reasonable assurance walk-through evidence prepared in advance - the auditor picks any sample, sees the source document, the factor version applied, the reviewer who confirmed it, and the content fingerprint
NGER-native reporting on the AR5 GWP set regulation 2.02 of the NGER Regulations requires, which AASB S2025-1 also permits for the NGER-covered portion of the AASB S2 disclosure, off one set of activity data with no double entry
Board-visible custom dashboards with materiality-tested Scope 3 methodology labels per category (spend, average-data, hybrid, supplier-specific)
JV consolidation across operational, financial, and equity-share methods so subsidiaries, associates, and joint ventures each disclose under the right boundary
Enterprise SSO and SCIM, MFA with security stepup, seven-year audit trail retention, and Australian data residency for CIO and general counsel review

What the system does

Reads supplier invoices, fuel dockets, utility bills, delivery notes, and meter readings in eight file formats - PDF, CSV, Excel, Word, PowerPoint, RTF, images, scanned/image-only PDFs
Auditor Workspace with dedicated read-only access for the external assurance team, one-click Evidence Pack export bundling every emission record with its source document and audit trail
MCP (Model Context Protocol) server for CFO, CIO, and Investor Relations to query the emission ledger from ChatGPT, Claude Desktop, or any MCP-compatible assistant with OAuth 2.1 + PKCE, tier-gated permissions, and full audit
Factor version pinning per NGA edition (2024, 2025) so the exact factor set applied to each period is retrievable years later - the answer to "which factor edition did you use for FY25" is one click
Reporting period lifecycle with open, locked, submitted, and archived states, restatement register as a first-class object with written justification captured as load-bearing evidence
Baseline snapshots for AASB S2 paragraph 21 comparative disclosures - the prior-year figure the day it was submitted is preserved immutably
Deterministic anomaly checks, run daily at 6am and after each document batch, flag outlier readings before they reach a published number

Frequently asked

How does Carbonly compare to Watershed, Persefoni, or Salesforce Net Zero Cloud for ASX 200 compliance?

We can only describe Carbonly here; confirm current NGER support and pricing for any other platform directly with that vendor (as at October 2026). Carbonly is built NGER-native, with NGA 2025 factors (193, including 21 per-litre fuel factors), factor version pinning, an AR5 ledger calculation as regulation 2.02 of the NGER Regulations requires, an on-demand Safeguard Trajectory Check, and JV consolidation. Pricing is per project (Small/Medium/Large/Enterprise) with a $100/month workspace minimum and no per-seat fees.

Is Carbonly enterprise-security ready for an ASX-listed board?

Enterprise SSO with SAML and OpenID Connect, SCIM 2.0 user provisioning, MFA with security stepup on high-risk actions, session revocation and token versioning, seven-year audit trail retention, content fingerprints on source documents, and Australian data residency. Every write is captured as a typed audit event with the actor identity, timestamp, and content hash.

What about joint ventures across mining, infrastructure, and property?

JV consolidation runs three methods in parallel - operational control (NGER default), financial control (often for AASB S2 alignment with the financial statements), and equity share. Switch the boundary on a report and the numbers reconcile. Each JV agreement can carry its own consolidation method and documented allocation methodology.

How does the Auditor Workspace help our year-two reasonable assurance transition?

The external assurance team gets a dedicated read-only login. They step through any reporting period, see the lock and submission state, and one-click generate an Evidence Pack: a single ZIP that traces every kilogram of CO2-e back to source documents with content fingerprints and the audit-event trail. It is designed to support ASSA 5010 reasonable assurance walk-through testing and to reduce the internal preparation a walk-through otherwise needs.

Ready to see how this works for your operation?

Email hello@carbonly.ai with your reporting obligation, number of sites or projects, and current process. We reply within business hours.