CarbonAccounting.ai
01 For the decision maker

For the decision maker

Enterprise carbon accounting software with the audit trail, control and assurance the CFO signing the number needs

Enterprise carbon accounting is corporate emissions measurement run with financial-reporting discipline: controlled, evidenced, reproducible. Sustainability disclosure is drifting into the same regime as financial disclosure: assured, restated when wrong, and signed by someone.

Enterprise carbon accounting software is emissions measurement run with financial reporting discipline rather than sustainability reporting habits: every tonne traceable to a source document, every factor choice recorded as an event with an owner and a reason, and every prior year reproducible after the method changes. The distinction matters because assured disclosure is now a signature obligation. What ends careers is not a high number, it is a restatement nobody can explain.

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See your own spend classified to GHG Protocol scopes in about a minute.

01 Amazon Web Services Cloud infrastructure, annual S3 20,240 kg
02 Con Edison Electricity, 82,400 kWh metered S2 31,312 kg
03 Delta Air Lines Team offsite + client flights S3 24,375 kg

Three questions decide whether the number you sign is defensible

  1. 01 Where did this tonne come from? Every posting in the ledger links to its source line: the invoice, the meter reading, the supplier response. The answer to an auditor's sample is a click, not a reconstruction.
  2. 02 Who changed this factor, and why? Factor choices and classification overrides are recorded in an append-only audit log with the person who made them, and an override needs a written reason. Nothing in the log can be edited or deleted.
  3. 03 Can you reproduce last year's number after the method changed? Methods and factor sets are versioned; restatements are explicit, first-class events with a documented reason. The trend line survives methodology improvements.

Those three questions are why this product is framed as carbon accounting software rather than a dashboard. Dashboards answer how much; accounting answers how do you know. The risk that ends careers is not high emissions, it is a restatement nobody can explain. The regulatory mechanics behind that sit on CSRD reporting software and Scope 3 emissions reporting requirements.

The ROI conversation, without invented numbers

Time: the classification pass over an AP export is the multi-week part of a first inventory, and it is the part this automates; your reviewer reviews instead of typing. Money: the honest comparison is not another SaaS line item, it is a consulting engagement repeated annually; a subscription is a smaller, recurring, retained asset, because next year starts from last year's ledger. We will not print a dollar saving, because we do not know your consultant's quote. Risk: an assured disclosure needs lineage a spreadsheet cannot produce eighteen months later. Control: the boundary, methods and factors stay yours, versioned in your ledger, not locked in an advisor's model.

Security & control · what the product does today

Seats with roles

The workspace owner invites each person by email as an editor or, on Assurance, as a read-only viewer. Every seat has its own private link, and revoking a seat kills that one link.

Audit log with who and why

On Compliance and above, imports, overrides, factor choices, seat changes and exports are recorded as append-only events with the person who made them, and an override needs a written reason. Nothing in the log can be edited or deleted.

Methodology history + restatements

On Assurance, every method or factor change is a dated version with its reason, and a correction to a closed period is a restatement with its reason, so last year's number can be reproduced after the method changed.

Read-only access for your assurance provider

On Assurance, your auditor gets a viewer seat: postings, evidence and the log are open to read, and nothing can be changed from that seat.

Encrypted in transit, yours to take out

Every page and file moves over HTTPS. The ledger exports to CSV and XLSX whenever you want it, and the card, invoices and cancellation live in your own billing portal.

This list describes what the product does, not a certification. We hold no SOC 2 attestation and no ISO 27001 certificate today, and we will not imply otherwise. We publish no uptime percentage and sign no availability SLA. We do not print badges we have not earned.

What makes carbon accounting software enterprise grade?

Most enterprise carbon software is sold on dashboards, supplier portals and framework coverage. Those matter, but they are not what makes a platform enterprise grade. Four properties do, none of which show up in a product demo. A dashboard and an accounting system look identical until somebody samples a figure and asks where it came from, which is exactly what an assurance engagement does and what a regulator can do afterward.

What separates enterprise carbon accounting from emissions reporting tools
Property What a reporting tool does What an accounting system has to do
Lineage Stores a category total you entered or imported Links every posted tonne to the invoice, meter reading or supplier response it came from, retrievable without asking support
Change control Lets any user edit a figure Records classification overrides and factor choices as append-only events with the person who made them and the reason
Versioning Overwrites last year when the method improves Versions methods and factor sets, so a restatement is an explicit event with a documented reason and the trend line survives
Boundary Assumes one consolidation approach Holds the organizational boundary and consolidation approach as data, because operational and financial control move different emissions between Scope 1 and Scope 3

The consolidation point is the one that quietly breaks multi-entity groups. Operational control, financial control and equity share each produce a different split between Scope 1 and Scope 3 from the same business, and changing approach between years makes the comparatives meaningless unless the change is versioned. The mechanics are in operational versus financial control.

What does an enterprise carbon accounting rollout have to survive?

Three events, usually in this order. An assurance provider samples reported figures and asks for the record behind each one, which tests lineage rather than accuracy. A method or factor set improves and prior years have to be restated without losing the trend. And an entity gets acquired or divested, moving emissions across the boundary mid-year. A system designed for the first two handles the third; a spreadsheet handles none of them eighteen months later.

Which obligations trigger that assurance step, and when, is set out on Scope 3 emissions reporting requirements, and the difference between assurance levels in limited versus reasonable assurance. For groups whose largest data problem is the volume of purchase records rather than the reporting layer, Scope 3 emissions software covers the classification side directly. Groups that close the books in SAP S/4HANA can compare that route with SAP's own modules on SAP carbon accounting.

01 What should I look for in enterprise carbon software?
Look for four things before features: lineage from every reported tonne to its source record, a recorded owner and reason for every classification and factor change, versioned methods so prior years can be restated deliberately, and the consolidation approach held as data. Ask the vendor to trace one sampled tonne back to its invoice during the demo.
02 What is enterprise carbon accounting software?
Software that measures corporate greenhouse gas emissions under financial reporting controls: every reported tonne traceable to a source document, factor and classification changes recorded as events with an owner and a reason, methods and factor sets versioned so prior years can be restated deliberately. The test is whether you can produce the derivation of a single figure on request.
03 How is enterprise carbon accounting different from an ESG dashboard?
A dashboard answers how much. An accounting system answers how you know. Dashboards store totals you supply, which is sufficient until an assurance provider samples a line or a restatement has to be explained. The difference only becomes visible at the point where the number is signed rather than published.
04 Does enterprise carbon accounting require assurance?
Not everywhere yet, but the direction is one way. The California SB 253 report due November 10, 2026 carries no assurance requirement, CDP requires third party verification for Leadership and A List scores, and the SBTi Corporate Net-Zero Standard V2.0 introduces a limited assurance requirement for Category A companies, which includes medium-sized US companies, from 2027.
05 What should a CFO ask before approving a carbon accounting purchase?
Three questions. Can I see the derivation of any single reported tonne back to its source document without contacting support? Are method and factor changes versioned as events rather than overwritten? And when the consolidation approach or the entity boundary changes, does the system keep both versions so comparatives still mean something?

Which plan a group facing assurance buys

The controls on this page are the Assurance plan: everything in Compliance (activity-based factors, supplier data requests, CSRD ESRS E1, CBAM and ISSB IFRS S2 report packs, reduction targets, the audit log), plus multi-entity consolidation with intercompany eliminations, methodology change history, restatement handling, a read-only seat for your assurance provider and unlimited seats. It costs $3,900 a month, or $23,400 a year billed yearly ($1,950 a month), and is bought with a card like every other plan. Start an Assurance workspace or compare the three plans.

This page describes what the product does today. We do not offer single sign-on, directory provisioning, a choice of hosting region or custom contract terms, and we hold no SOC 2 attestation and no ISO 27001 certificate. We will add a line here the day one of those is real, and not before.

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