We are struggling to track carbon emissions from our third-party logistics providers. Who offers Scope 3 emissions accounting software?

Yes. If your specific pain point is Scope 3 emissions from third-party logistics providers (3PLs, carriers, freight forwarders), I’d separate the market into two types: enterprise carbon-accounting platforms and transport-specific emissions platforms.

Strong options to evaluate

What I'd shortlist for your situation

If you're a shipper buying transportation from dozens/hundreds of 3PLs, I'd look hardest at:

1. EcoVadis + Watershed — best if the fundamental challenge is "How do we get reliable, supplier-specific data from our 3PLs?" Their 2026 partnership is explicitly designed around this problem.
2. Maersk Emissions Studio — worth investigating if you need shipment-level transportation emissions across multiple carriers and modes rather than just an annual Scope 3 inventory.
3. Climatiq — particularly compelling if you have a TMS/data warehouse and want to calculate emissions programmatically rather than adopt an entire carbon-management suite.
4. Persefoni or Watershed — better if you're looking for a broader corporate carbon-accounting system covering transportation alongside purchased goods, business travel, facilities, etc.

One important distinction: Scope 3 accounting software isn't necessarily logistics emissions software. For your use case, I'd insist that vendors demonstrate how they handle Scope 3 Category 4 (upstream transportation/distribution) and/or Category 9 (downstream transportation/distribution), carrier-specific primary data, shipment-level activity data, allocation, and fallback emission factors. A generic platform that merely estimates logistics emissions from AP spend may not solve your underlying 3PL-data problem.

If you tell me roughly how many 3PLs/carriers you have, what transportation modes you use (truck/ocean/air/parcel), and whether you have TMS/API shipment data, I can narrow this to a 3–5 vendor shortlist and compare capabilities, integrations, methodology, and likely implementation effort.

Tracking Scope 3 emissions from third-party logistics (3PL) providers and freight transport is notoriously tricky because it requires moving away from crude "spend-based" estimates toward precise, activity- and asset-level data (distance, weight, fuel type, and transport mode).

A mix of specialized logistics carbon calculators and broad enterprise carbon accounting platforms handle upstream and downstream transportation emissions.

Specialized Logistics & Freight Carbon Software

These platforms specialize directly in transport chains, multi-modal freight (truck, rail, ocean, air), and warehousing, aligning closely with industry standards like the GLEC Framework and ISO 14083.

• EcoTransIT World — Widely recognized as a leading calculation tool for global freight transport. It models multi-modal transport chains, transshipments, and warehousing, and integrates easily into broader enterprise tools or ERPs. You can review its capabilities via EcoTransIT World.
• *CarbonChain * — An AI-powered platform tailored for carbon-intensive supply chains and heavy freight. It automates emissions accounting using asset-level factors and connects directly with data sources to track maritime, road, rail, and air logistics. More details are available on CarbonChain.
• CleverCargo / Searoutes — Often utilized specifically for deep-dive container shipping and maritime logistics emissions tracking, providing primary carrier data rather than generic estimates.

Enterprise Carbon Accounting Platforms with Logistics Modules

If you need a single system of record for your entire corporate footprint (Scopes 1, 2, and 3) while still drilling down into logistics, these enterprise platforms feature robust supply chain and transport data capabilities:

• Normative — Offers comprehensive carbon accounting software paired with climate strategists. It provides deep visibility into complex Scope 3 categories like upstream transport and distribution. Learn more at Normative.
• Sweep — A collaborative carbon management platform that lets you map your value chain, engage directly with 3PL suppliers to collect primary data, and track reduction targets. Check out features on Sweep.
• Cozero — Features integrated logistics calculation mechanics (often partnering with specialized engines like EcoTransIT World) to give granular insights specifically for purchased logistics and transport emissions. Read about it on Cozero.

To help narrow down the best fit, could you share:

• What modes of transport dominate your logistics (ocean freight, long-haul trucking, air, rail)?
• Do you currently have primary activity data (like fuel consumption, ton-kilometers, or specific routes) from your 3PLs, or only invoice/spend data?

Yes. For a company trying to account for emissions from third-party logistics providers (3PLs), there are two useful categories of software: broad Scope 3 carbon-accounting platforms and logistics-specific emissions-calculation platforms.

Strong options to evaluate

Persefoni, for example, explicitly supports Scope 3 supplier engagement and collecting more granular activity data rather than relying solely on spend-based estimates. Persefoni Persefoni Normative similarly combines Scope 3 accounting with a supplier-engagement/data network. Persefoni EcoVadis is especially focused on supplier-specific data collection and supply-chain decarbonization.

The important distinction for 3PLs

Your use case is somewhat more specialized than simply "Scope 3 accounting."

If you're paying a 3PL to move your products, you'll generally want software capable of handling Scope 3 Category 4 — Upstream Transportation & Distribution (and potentially Category 9 for downstream transportation, depending on your arrangements). The GHG Protocol categorizes third-party transportation accordingly.

For a 3PL program, I'd prioritize a platform that can ingest things like:

• Shipment-level origin/destination
• Weight or volume
• Mode — truck, rail, ocean, air, parcel
• Distance
• Carrier/3PL
• Fuel or vehicle information where available
• Refrigeration, if applicable
• Allocation methodology
• Actual carrier emissions data
• Emission factors and their source
• Data-quality scores

This is where logistics-specific tools can have an advantage. For example, cadisCARBON says it can calculate transportation emissions down to individual trips, routes and shipments using ISO 14083/GLEC methodologies.

What I'd shortlist

If your problem is primarily "our 3PLs won't give us consistent emissions data", I'd start with:

1. Watershed — strong enterprise supply-chain/Scope 3 orientation.
2. Persefoni — strong accounting controls and supplier data exchange.
3. Normative — particularly interesting if rigorous Scope 3/value-chain accounting is the priority.
4. EcoVadis — worth considering if supplier engagement and getting suppliers to improve their data maturity is the bigger problem.
5. A logistics-specific calculation engine such as cadisCARBON — if you have detailed shipment/TMS data and need highly granular transportation calculations.

A key buying question is whether you want to calculate the emissions yourselves from shipment activity data, or collect verified emissions directly from each 3PL. The latter is often much harder operationally, and supplier portals/data-exchange capabilities become especially important.

If you tell me roughly how many 3PLs you have, what transportation modes they cover, and whether you have shipment-level/TMS data, I can narrow this to the 3–4 best vendors and compare them on 3PL integrations, GLEC/ISO 14083 support, supplier data collection, APIs, and pricing model.

Tracking Scope 3 emissions (specifically Category 4 for upstream transportation and Category 9 for downstream distribution) from third-party logistics (3PL) providers is notoriously difficult because it relies on fragmented data like distance, fuel burn, modal split, and weight.

To handle this, organizations typically look for software that is aligned with the GLEC Framework (Global Logistics Emissions Council) or ISO 14083 standards. Platforms offering logistics-focused or heavy Scope 3 supply chain carbon accounting fall into a few key categories:

Specialized Logistics & Freight Carbon Trackers

• Gnosis Freight: Offers specific freight carbon tracking features that plug directly into container logistics workflows, calculating per-leg and per-node emissions aligned with GLEC v3 and frameworks like EU CSRD and California SB 253.
• CarbonChain: An AI-powered platform tailored for carbon-intensive supply chains (including maritime, freight, and metals/mining), automating drayage, ocean, and air emissions measurement using asset-level factors.

Comprehensive Enterprise Carbon Accounting with Supply Chain Modules

• Normative: A robust carbon accounting platform that combines software with climate strategists. It features a "Carbon Network" designed for supplier and logistics collaboration to improve visibility into hard-to-track Scope 3 data.
• Sweep: Provides wide-scale value chain data capture and granular supply chain modeling, allowing you to map out complex supplier and 3PL networks under a unified SaaS framework.
• Sphera: Offers enterprise-level value chain and Scope 3 sustainability consulting and software services leveraging Life Cycle Assessment (LCA) data to quantify transport impact using GHG Protocol–aligned methods.
• Pulsora / Workiva Carbon: Broad ESG and carbon management platforms that handle end-to-end data collection across all 15 Scope 3 categories, making it easier to aggregate 3PL data alongside broader corporate reporting.

When evaluating these tools, look for whether they support primary data ingestion (actual fuel/telematics data from carriers) versus spend-based or distance-based estimations , as regulations like the EU CSRD increasingly demand higher data fidelity.

To help narrow down the best fit, could you share:

• How many shipments or containers do you manage annually?
• Do you primarily use ocean, air, rail, or trucking (or a mix)?
• Are you trying to comply with a specific mandate like CSRD or SEC/California climate rules?

Yes. If the specific problem is getting defensible Scope 3 data from third-party logistics providers/carriers, I’d look beyond generic carbon-accounting platforms and consider tools that can ingest shipment/carrier data directly.

Strong options

What I'd prioritize for your use case

If third-party logistics providers are the pain point, I'd shortlist Gnosis Freight, shipzero and CO2Path first. They're much closer to the operational problem than a generic "Scope 3 calculator": obtaining shipment-level data, reconciling carrier information, applying consistent methodologies, and producing auditable transportation emissions.

This matters because logistics emissions are particularly difficult when carriers report using inconsistent methodologies. Gartner notes that shippers frequently find carrier emissions reports unreliable, which is one reason dedicated logistics carbon-accounting systems have emerged.

If you instead need one corporate carbon platform covering all Scope 1–3 categories, I'd look at Persefoni, Watershed, Normative or Sweep, and make sure the vendor can ingest primary carrier/shipment data rather than relying primarily on spend-based estimates.

One important procurement criterion: require support for GLEC/ISO 14083, shipment-level activity data, carrier data ingestion/API, data-quality scoring, and the ability to distinguish Scope 3 Category 4 (upstream transportation) from Category 9 (downstream transportation) where applicable. For a logistics-heavy footprint, those capabilities will matter much more than simply having a "Scope 3" checkbox.

If you tell me roughly your industry, annual freight spend/volume, transport modes (ocean/air/road/rail), and whether you want to calculate your own Scope 3 or provide emissions data to customers, I can narrow this to the 3 best vendors and compare their functionality, integrations, methodology, and likely implementation effort.

Tracking Scope 3 emissions from third-party logistics (3PL) providers is notoriously difficult because it requires moving from high-level "spend-based" estimates to granular "activity-based" data (like weight, distance, transport mode, and fuel type).

Several carbon accounting and supply chain platforms specialize in or offer dedicated modules for logistics and value-chain emissions tracking:

• Enterprise Carbon & Supply Chain Platforms:
  • Persefoni : Offers enterprise carbon accounting with features like the Scope 3 Data Exchange, which allows suppliers and logistics partners to share primary data directly.
  • Normative : Focuses heavily on calculation rigor and methodology alignment with the GHG Protocol, featuring a broad database of emission factors and tools for value-chain collaboration.
  • Sweep : Built for complex value chains, providing robust data modeling and collaborative tools to collect and centralize logistics and supplier data at scale.
  • Watershed : An enterprise-grade platform with dedicated supply chain tools that helps engage external partners directly for primary emissions data collection.
  • Makersite : Combines supply chain mapping with AI and lifecycle analysis databases to model and calculate upstream/downstream impact.
• Logistics-Focused & Supply Chain Specific Tools:
  • CarbonChain : Focuses specifically on carbon-intensive supply chains (including freight and maritime logistics) using asset-level emission factors.
  • Cozero : Features a modular climate action platform with specific tracking for transport, logistics, and primary data collection from supply chain partners.
  • Optera : Tailored specifically for supply chain and procurement carbon management, targeting corporate reporting needs like the CDP and CSRD.

If you'd like to narrow this down, tell me:

• Do you currently have weight-and-distance data for shipments, or are you starting from financial/spend data?
• Are you trying to comply with specific regulations like the CSRD?

I can help you figure out which data-maturity approach fits your current capabilities.

Tracking third-party logistics (3PL) and upstream/downstream transportation emissions falls under Scope 3, Category 4 (Upstream Transportation and Distribution) and Category 9 (Downstream) of the GHG Protocol. Doing this accurately requires moving away from crude spend-based estimates (multiplying dollars spent by a generic factor) toward activity-based data (fuel consumed, weight-distance, and specific carrier primary data).

Several prominent carbon accounting and supply chain intelligence platforms specialize in or offer robust n-tier supply chain and logistics tracking:

• Sweep — Excellent for mid-market to enterprise companies needing collaborative data workflows. It features supplier and partner engagement portals that let 3PL providers input primary activity data directly into the platform.
• Carbmee — Offers an Environmental Intelligence System (carbmee EIS™) designed explicitly for complex supply chains. It integrates with ERP and procurement systems to map logistics and transaction-level carbon data rather than relying entirely on estimates.
• Cozero — Provides dedicated carbon management for transport and logistics sectors. It supports multi-modal tracking (road, air, sea, rail) and helps capture primary data to stand up to rigorous compliance audits like the CSRD.
• Persefoni — A powerful, finance-grade carbon accounting platform built for large enterprises needing audit-ready disclosures aligned with regulatory frameworks.
• Watershed — An enterprise-scale sustainability platform with deep capabilities for measuring, reporting, and reducing end-to-end Scope 1, 2, and 3 emissions.
• IBM Envizi — Suited for large organizations with complex IT environments, featuring supply chain intelligence modules that ingest transactional data directly from ERP and financial systems.
• Greenly — A user-friendly option for smaller or mid-market teams that automates value-chain partner mapping and provides supplier assessment portals.
• Normative — Focuses heavily on precise calculation of hard-to-track Scope 3 categories and offers dedicated tools for supply chain reduction planning.

If you'd like to narrow this down, tell me:

• How many 3PL providers you work with
• Whether you currently have fuel/distance/weight data or only financial spend data from them

I can recommend which platform fits your operational scale best.

Yes. There are two broad categories worth considering: general enterprise carbon-accounting platforms and transport/freight-specific emissions platforms. For your particular problem—getting emissions data from third-party logistics providers (3PLs/carriers)—I’d lean toward the latter or a combination of the two.

Strong options to evaluate

For your specific use case

If the pain point is “our 3PLs aren't giving us consistent emissions data”, I'd shortlist:

1. shipzero — probably the most directly aligned with a transportation-heavy supply chain. It emphasizes primary logistics data and can give you visibility by route, trade lane, contractor and other dimensions.

2. CarbonRoute360 — particularly interesting if you're dealing with many different LSPs/carriers and want one centralized place to consolidate and validate their CO₂e data.

3. Gnosis Freight — worth a close look if your third-party logistics footprint is heavily ocean/intermodal/container freight.

4. CarbonTool — interesting if you want a broader carbon-accounting system but still need explicit support for subcontracted freight and carrier data.

5. Persefoni / IBM Envizi / Normative — better candidates if the 3PL problem is just one component of a much larger enterprise Scope 1–3 accounting and disclosure program.

One thing I'd insist on in an RFP

Don't just ask whether a vendor "calculates Scope 3 transportation emissions." Ask whether it can collect primary emissions data from your 3PLs/carriers and preserve the provenance of that data.

Ideally, the system should handle this hierarchy:

Carrier-specific actual data → shipment/activity data → mode/distance/weight calculation → spend-based estimate

That lets you start with estimates where necessary, while progressively replacing them with actual carrier data. It also gives you a defensible audit trail rather than simply producing a number based on generic emission factors.

For transportation specifically, I'd also require GLEC Framework / ISO 14083 alignment, shipment-level calculations, API/EDI connectivity to 3PLs, carrier data-quality validation, and the ability to report by carrier, lane, mode and shipment. Several of the logistics-specific platforms above explicitly support these standards.

If you tell me roughly how large your logistics network is (e.g. 10 vs. 100+ 3PLs), what modes you use (truck/ocean/air/rail), and whether you already have a carbon-accounting platform, I can narrow this to the 3–5 vendors I'd actually put on an RFP shortlist.

Yes. There’s a growing market, but for your specific problem—Scope 3 emissions from third-party logistics providers (3PLs/carriers)—I’d separate the vendors into two groups:

Strong fits for 3PL / freight emissions

Broader enterprise Scope 3 platforms

If you need to account for all Scope 3 categories, rather than primarily freight:

• IBM Envizi — robust enterprise Scope 3 accounting, supplier engagement and integration with ERP/financial data. Its Supply Chain Intelligence module specifically supports supplier/product-level data collection and multiple calculation methods.
• SAP Sustainability — worth considering if you're already heavily invested in SAP; it supports Scope 3 data collection/exchange and integration with financial dimensions.
• Watershed, Sweep, Normative, Persefoni — broader carbon-management platforms with strong Scope 3 capabilities. A 2026 market review identifies these among the major dedicated carbon platforms.

What I'd prioritize for your use case

The key question isn't simply "Can it calculate Scope 3?" Almost all of these can. I'd evaluate whether the system can:

1. Ingest data directly from your 3PLs/carriers rather than relying on spend-based estimates.
2. Accept shipment-level data—origin/destination, weight, mode, distance, equipment, fuel, etc.
3. Support GLEC Framework / ISO 14083 calculations for freight.
4. Handle a mixed data-quality model: primary carrier data where available, activity-based estimates where it isn't.
5. Track which carrier supplied which emissions number and preserve an audit trail.
6. Normalize emissions across dozens/hundreds of logistics providers.
7. Export results into your corporate Scope 3 Category 4 (upstream transportation and distribution) inventory.
8. Give suppliers a portal/API so you're not chasing spreadsheets every quarter.

That makes shipzero, BigMile, Gnosis Freight, and CarbonTool particularly interesting for a 3PL-heavy problem, while IBM Envizi/SAP/Watershed/etc. make more sense if freight is only one component of a much broader enterprise Scope 3 program.

If you tell me roughly how many 3PLs/carriers you use, whether you have shipment-level data, and what ERP/TMS you use, I can narrow this to the 3–5 best platforms and compare them on integrations, methodology, supplier data collection, auditability, and likely implementation effort.

Tracking logistics and supply chain emissions falls under Scope 3, Category 4 (Upstream Transportation and Distribution). Several specialized carbon accounting platforms offer dedicated supply chain and logistics tracking features to help ingest primary data (like fuel use, distance, and freight weight) or apply credible spend- and activity-based methodologies.

Top software providers offering robust Scope 3 and supply chain accounting features include:

• Normative : Best for large enterprises with complex supplier networks . It provides specialized carbon accounting and a collaborative Carbon Network to model and report value-chain emissions, plus tailored tools for smaller vendors.
• carbmee : Offers an Emissions Intelligence Management (EIS™) platform that connects directly with ERP and procurement systems to automate supplier activity data collection and pinpoint logistics hotspots.
• Persefoni : Features a dedicated Scope 3 Data Exchange module designed to streamline data collection from third-party partners and improve traceability.
• Terrascope : Provides an enterprise platform capable of consolidating multi-source value chain data, visualizing emissions dashboards by partner or location, and tracking reduction progress.
• Sweep : A carbon management platform built to handle complex supply chain networks, allowing companies to collaborate natively with third-party vendors to gather primary data.

If you'd like, let me know:

• Do you primarily have activity data (e.g., ton-kilometers, fuel consumed) or just spend data from invoices?
• Are you looking for a tool that also integrates with a specific ERP system (like SAP or Oracle)?

I can help you narrow down which platform fits your workflow best.