Best carbon accounting software for 2027

Most tools here cover Scope 1, 2 and 3. The difference shows when an auditor asks where a number came from, or when your data sits in bills instead of an ERP.

Senseible makes one of the tools on this list.

The list

1. Persefoni (Pro and Advanced)

• Who it is for: Pro: companies with low to medium complexity answering customer or investor footprint requests; Advanced: enterprises and financial institutions (PCAF financed emissions).
• Best for: Teams that need a free starting footprint now and an enterprise upgrade path later.
• Pricing: Pro: free. Advanced: on request.
• Strengths: A free Scope 1 to 3 plan that covers all 15 Scope 3 categories. States SOC 2 Type II and ISO 27001 compliance.
• Limits: Free plan is one user; framework metric exports and the methodology report are paid add-ons. No document reading of bills or invoices found; data comes in through forms, uploads or APIs.

2. Senseible

• Who it is for: MSMEs and exporters (self-serve); enterprises collecting supplier data; lenders.
• Best for: Indian MSMEs and exporters who need a defensible footprint from invoices and bills at low cost.
• Pricing: Free Snapshot plan. Paid plans from ₹499 a month billed yearly, plus GST. Scale on request.
• Strengths: Builds the footprint from bills already kept, with factor and source on every line. Low published rupee price for MSMEs.
• Limits: No SOC 2 or ISO 27001 certification. Verification is Senseible's own expert-supervised check, not third-party assurance. Reports are self-declared drafts; large-enterprise connectors are built per customer.

3. IBM Envizi ESG Suite

• Who it is for: Organisations with many sites and large data volumes; priced by data volume.
• Best for: Large multi-site enterprises that already run IBM or need an ESG data warehouse.
• Pricing: On request; an online calculator gives an indicative figure. Bundles by data volume: Essentials (up to 1,000 accounts), Standard (1,001 to 5,000), Premium (5,001 to 15,000+), plus modules.
• Strengths: Market-based Scope 2 handled automatically with residual mix factors. Scales to very large data volumes and ERP feeds.
• Limits: No published price; final price set in a sales process. Built for large enterprises; no small-company plan found.

4. The Sustainability Cloud (TSC NetZero)

• Who it is for: SMEs to enterprises; plans by facilities and users; country selector includes India, US, UK, Germany, Canada, Australia, South Africa, UAE, Mexico.
• Best for: Indian companies that want low-cost Scope 1 and 2 now and BRSR/CBAM modules later.
• Pricing: India prices: Free ₹0 (1 facility, 1 user); Business Basic ₹3,599 a month (1 facility, 5 users); Business Standard ₹7,199 a month (5 facilities, 10 users); Business Premium ₹11,999 a month (5 facilities, 25 users); Enterprise custom. Monthly or annual billing (annual saves 16%). Free and paid SME plans cover Scope 1 and 2.
• Strengths: Published rupee prices with a free Scope 1 and 2 plan. Wide framework list including BRSR, CBAM and PACT exchange.
• Limits: SME plans are manual entry and Scope 1 and 2 only; Scope 3 needs higher tiers. Security certification not stated on its site.

5. Watershed

• Who it is for: Large companies with dedicated sustainability teams; also financial institutions (financed emissions option on site).
• Best for: Multinationals with a climate team that want measurement, reporting and supplier programmes in one system.
• Pricing: On request.
• Strengths: Large factor library with calculation lineage shown. Supply chain module that ranks suppliers and feeds their responses into the footprint.
• Limits: No published pricing. Built for large companies; nothing on the site addresses small firms or India-specific frameworks.

6. Sweep

• Who it is for: Enterprises and financial institutions; multi-entity, multi-region companies.
• Best for: European and US enterprises running CSRD or SB 253 reporting alongside a large supplier programme.
• Pricing: On request.
• Strengths: Supplier side is free for surveyed suppliers and imports CDP and EcoVadis data. Product footprints (ISO 14067) and corporate footprint in one system.
• Limits: No published pricing. No India-specific framework coverage found.

7. Salesforce Net Zero Cloud

• Who it is for: Salesforce customers; Growth edition; add-ons for Enterprise, Unlimited and Performance editions.
• Best for: Salesforce customers who want ESG data in the same system as their CRM.
• Pricing: Net Zero Cloud Growth: on request. Published add-ons: CRM Analytics US$165 per user a month (billed annually); External Engagement Management US$60K per org a year; Agentforce for Net Zero Cloud US$150 per user a month; Multi-Organization Support US$24K per org a year; User Add-On US$25 per user a month.
• Strengths: Document reader, audit trail and REC management listed in the base edition. Fits companies already running Salesforce.
• Limits: Core edition price not published; the supplier data add-on is US$60K per org a year. Value depends on being a Salesforce customer.

8. Greenly

• Who it is for: SMB to enterprise; states 4,000 clients in 30+ countries.
• Best for: Small and mid-size companies that want software plus a climate expert to get a first footprint.
• Pricing: On request.
• Strengths: Serves small companies as well as enterprises, with expert support. States SOC 2 compliance.
• Limits: Prices not published. Spend-based start for Scope 3 (accounting export via ADEME factors) before physical data.

9. osapiens HUB for Corporate Carbon Footprint

• Who it is for: Mid-size and large companies with supply chain compliance needs; 2,500+ companies in 60+ countries.
• Best for: European companies that must handle carbon, CBAM and supply chain laws together.
• Pricing: On request.
• Strengths: Carbon, CBAM, EUDR and supplier compliance on one supplier record. Shows a data-quality score per line so assurers see method mix.
• Limits: No published pricing. Carbon is one part of a broad compliance suite; depth of reduction planning unclear.

10. Microsoft Sustainability Manager

• Who it is for: Organisations on Microsoft cloud; priced per tenant.
• Best for: Large companies standardised on Microsoft cloud that want sustainability data next to their other business data.
• Pricing: Essentials: US$4,000 per tenant per month. Premium: US$12,000 per tenant per month. Some features need other Microsoft licences.
• Strengths: Published list prices. Names BRSR among its preparatory report standards.
• Limits: All Scope 3 categories only on the US$12,000 a month Premium tier. Depends on other Microsoft licences for some features.

11. Climes Carbon-OS

• Who it is for: Listed companies (BRSR Core), exporters with EU buyers (CBAM), lenders (PCAF), suppliers to multinationals.
• Best for: Indian listed companies preparing BRSR Core assurance.
• Pricing: On request.
• Strengths: Built for BRSR Core assurance with a document-level evidence ledger. Covers CBAM, PCAF and product footprints on one ledger.
• Limits: No published pricing. Little public detail on data intake and security.

12. SAP Sustainability Footprint Management

• Who it is for: SAP ERP customers, manufacturers needing corporate and product footprints at scale.
• Best for: Manufacturers on SAP who need product carbon footprints from ERP data.
• Pricing: On request.
• Strengths: Calculates from ERP data already in SAP, at product and corporate level. 45,000+ pre-delivered factors.
• Limits: Only practical for SAP ERP users. Disclosure outputs and Scope 3 category coverage not stated on the product page.

13. Sphera

• Who it is for: Large industrial companies; EHS, product stewardship and supply chain buyers.
• Best for: Industrial firms that want consultants and an EHS-grade system together.
• Pricing: On request.
• Strengths: LCA-based factor library (Managed LCA Content). Software plus consultants for building the inventory.
• Limits: Much of the Scope 3 work is sold as consulting rather than self-serve software. No published pricing.

14. Plan A

• Who it is for: Companies setting science-based decarbonisation plans; founded 2017.
• Best for: European mid-size companies that want a science-led reduction plan with the footprint.
• Pricing: On request.
• Strengths: States GHG Protocol and TÜV Rheinland certification of the software. Built around decarbonisation plans and target setting.
• Limits: Its site shows Diginex branding; confirm who owns it before signing. No published pricing.

15. Sprih

• Who it is for: Large enterprises (stated); also supply chain programmes.
• Best for: Enterprises with document-heavy data that want AI extraction and drafted reports.
• Pricing: On request. Some reporting is offered at no cost; terms not detailed.
• Strengths: Reads invoices and bills with OCR, for own and supplier data. Audit trail records extraction method and timestamp.
• Limits: No published pricing. Factor sources and Scope 2 method not stated on its site.

Side by side

Which tools fit which situation

• Indian MSME or exporter working from bills: Senseible, The Sustainability Cloud (TSC NetZero), Persefoni (Pro and Advanced)
• Multinational filing CSRD or ISSB: Persefoni (Pro and Advanced), The Sustainability Cloud (TSC NetZero), IBM Envizi ESG Suite
• Getting ready for assurance: Persefoni (Pro and Advanced), Senseible, osapiens HUB for Corporate Carbon Footprint
• Already on SAP, Microsoft, Salesforce or IBM: Microsoft Sustainability Manager, IBM Envizi ESG Suite, Salesforce Net Zero Cloud
• Setting targets and a reduction plan: The Sustainability Cloud (TSC NetZero), Senseible, Watershed

How to choose

1. Scope 1 and 2, with location-based and market-based Scope 2. Ask: "Show me one electricity bill calculated both ways."
2. All 15 Scope 3 categories, with a choice of method. Ask: "Which Scope 3 categories can we calculate today, and by which method?"
3. Takes data from source: bill and invoice reading, or ERP and utility connectors. Ask: "Can it read our bills as they are, or do we type them in?"
4. A line-level trail an assurer can follow: source, edits, approvals. Ask: "Click one total and walk me back to the document."
5. Emission factor and its source shown on each line; custom factors allowed. Ask: "Which factor did this line use, from which source and year?"
6. Outputs for CSRD, ISSB, CDP, California SB 253 or BRSR. Ask: "Is the framework we file included, or a paid add-on?"
7. Published security certification (SOC 2 or ISO 27001). Ask: "Send us the current SOC 2 report or ISO 27001 certificate."
8. Target setting and reduction scenarios. Ask: "What does a solar install or a fuel switch do to next year’s total?"

Talking to two or three of these? Score them with your own weights.

Related guides: Best supplier emissions software for 2027, Best carbon compliance software for 2027, Best BRSR and BRSR Core software for 2027.