LCA vs Carbon Footprint vs Product Carbon Footprint: Which Standard?

LCA vs carbon footprint vs product carbon footprint: what is the difference?

A corporate carbon footprint measures an organisation, a product carbon footprint measures one unit of product, and a life cycle assessment (LCA) measures several environmental impacts of a product, climate included. They are not three names for the same calculation, nor three mandatory steps: each answers a different question.

• Corporate carbon footprint (GHG inventory; bilan carbone in French-speaking Morocco): a company’s greenhouse gas emissions and removals over a year, in scopes 1, 2 and 3 or in the six categories of ISO 14064-1.
• Product carbon footprint (PCF, or CFP in ISO wording): a product’s greenhouse gas emissions and removals, in CO2 equivalent per functional or declared unit, over all or part of its life cycle.
• Life cycle assessment: the evaluation of a product’s potential environmental impacts, from raw material extraction to end of life; climate change is only one of the possible impact categories.

Two relationships matter. A product carbon footprint is an LCA narrowed to one impact category: according to its abstract on iso.org, read on 11 November 2026, ISO 14067:2018 is consistent with ISO 14040 and ISO 14044 and addresses climate change only. A full LCA can therefore provide the carbon footprint; the reverse is not true. The corporate footprint, for its part, is not an LCA at all: it adds up an organisation’s emissions without assigning them to a product.

Which standards govern each exercise?

Three families: ISO 14064 and the GHG Protocol for the organisation, ISO 14040 and ISO 14044 for LCA, ISO 14067 and the GHG Protocol Product Standard for a product. All are in force; several are under revision as of 11 November 2026.

Corporate footprint: ISO 14064-1 and the GHG Protocol

ISO 14064-1:2018 — Greenhouse gases — Part 1: Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals sets, according to iso.org, requirements for the design, management, reporting and verification of an organisation’s inventory. The ISO 14064 series is GHG programme neutral: where a GHG programme applies, its requirements are added on top. It is under revision (draft ISO/WD 14064-1.2 at stage 20.60); the 2018 edition remains current.

The GHG Protocol comprises the Corporate Standard (revised edition, 2004), the Scope 3 Standard (2011) and the Scope 2 Guidance (2015). The details are in our ISO 14064-1 requirements guide.

LCA: ISO 14040 and ISO 14044

• ISO 14040:2006 — Environmental management — Life cycle assessment — Principles and framework (which replaced ISO 14040:1997), with Amendment ISO 14040:2006/Amd 1:2020;
• ISO 14044:2006 — Environmental management — Life cycle assessment — Requirements and guidelines, with ISO 14044:2006/Amd 1:2017 and Amd 2:2020.

According to iso.org, these editions also replaced ISO 14041:1998, ISO 14042:2000 and ISO 14043:2000, and were confirmed in 2022. They cover goal and scope, life cycle inventory, impact assessment, interpretation, reporting and critical review. ISO 14040 does not describe the technique in detail, which is why sector rules matter: product category rules (PCR), PEF category rules (PEFCR), and EN 15804+A2 for construction products in Europe.

Product footprint: ISO 14067 and the GHG Protocol Product Standard

ISO 14067:2018 — Greenhouse gases — Carbon footprint of products — Requirements and guidelines for quantification, which replaced ISO/TS 14067:2013, covers both full and partial footprints. According to iso.org, offsetting and communication are outside its scope. It is under revision (draft ISO/WD 14067.2 at stage 20.60); the 2018 edition remains current.

The GHG Protocol publishes the Product Life Cycle Accounting and Reporting Standard, which according to ghgprotocol.org covers raw materials, manufacturing, transport, storage, use and disposal. On 9 February 2026 it named its members of a joint working group with ISO tasked with a harmonised product-level standard; no joint text has been published.

Around these three families: ISO 14064-3:2019 for verifying organisation, project and product GHG statements; ISO 14083:2023 (formerly IWA 16:2015) for transport chains, useful for scope 3 and for the transport stage of a product footprint; ISO 14025:2026 (formerly ISO 14025:2006) for environmental product declarations (EPDs), built on an LCA; and Recommendation (EU) 2021/2279 for the EU’s multi-impact Product and Organisation Environmental Footprint methods (PEF and OEF).

ISO 14064 or GHG Protocol, ISO 14067 or ISO 14068: do you have to choose?

Not in the first case, yes in the second. ISO 14064-1 and the GHG Protocol measure the same thing, and one inventory can serve both; ISO 14067 and ISO 14068 do different jobs: one calculates a footprint, the other governs a carbon neutrality claim.

ISO 14064-1 vs GHG Protocol: two presentations of one inventory

The same invoices and meters feed both. The GHG Protocol sorts emissions into scopes 1, 2 and 3, the vocabulary of most customer questionnaires; ISO 14064-1:2018 sorts them into six categories and links to verification under ISO 14064-3:2019. Build the inventory once and publish the mapping. On 29 July 2026 the GHG Protocol and ISO announced a joint corporate standard: public consultation estimated for Q2 2027, publication estimated for Q4 2028. Until then, nothing changes in your calculations.

ISO 14067 vs ISO 14068: calculating is not claiming neutrality

ISO 14068:2026 — Climate change management — Carbon neutrality (formerly ISO 14068-1:2023, withdrawn in September 2026; according to iso.org, only the number and title changed) sets, according to iso.org, requirements for achieving and demonstrating carbon neutrality of organisations and products, including goods, services, buildings and events. It requires reducing emissions and enhancing removals in the value chain first, and offsetting only the residual footprint. It therefore needs a footprint as input: a corporate inventory for an organisation, an ISO 14067 footprint for a product.

On the EU side, Directive (EU) 2024/825 has applied since 27 September 2026 (Article 4, read on EUR-Lex on 11 November 2026). Its point 4c, added to Annex I of Directive 2005/29/EC, bans claiming, based on the offsetting of greenhouse gas emissions, that a product has a neutral, reduced or positive impact on the environment in terms of greenhouse gas emissions. Our position: reduce first, claim only what you can prove. See our ISO 14068 guide and our article on Directive 2024/825.

Which one should you do for the request you have received?

Start from the unit requested, not from the word used in the email. A result per year means a corporate footprint, a result per unit of product means a product footprint, several impact indicators mean an LCA.

A ceramic tile manufacturer near Fès may receive, in the same year, a scopes 1 and 2 questionnaire and an EPD request: two deliverables, the same meters. For CBAM, in its definitive period since 1 January 2026 (cement, iron and steel, aluminium, fertilisers, electricity, hydrogen), see CBAM for exporters.

Where should you start?

Usually with scopes 1 and 2 of the corporate footprint: it organises the meters, invoices and registers a product footprint will need, and it is the most frequent request from customers and banks. Then calculate the footprint of the references your buyers ask about, starting with the one that weighs most in your export sales. Keep a full LCA for requests about impacts other than climate. The exception: if a key buyer needs one product footprint at short notice, start there, but structure the data collection so that it also serves the corporate inventory.

How do the three calculations share the same data?

They draw on the same meters, invoices and bills of materials, but split them differently: by organisation and year for the corporate footprint, by unit of product for the product footprint and the LCA. Organising data collection once avoids redoing it for each request.

Which mistakes force you to redo the study?

• Dividing the corporate footprint by output and calling it a product footprint: it is an intensity ratio.
• Sending a carbon footprint when the customer asked for an LCA, or the reverse.
• Comparing two footprints built with different boundaries, allocations or PCRs.
• Sending an ISO 14067 footprint to an importer who needs CBAM embedded emissions.
• Labelling a product sold in the EU “carbon neutral” on the basis of offsets.
• Citing a withdrawn edition, such as ISO 14068-1:2023 or ISO 14025:2006.

Our product carbon footprint ISO 14067 guide details the functional unit, allocation and data of a product study.

Before starting a calculation: what should you check?

A written scoping note before any data collection: who is asking, for what use, in which unit, with which external check. It tells you whether you need a corporate footprint, a product footprint, an LCA or several at once.

• The request is in writing and names its framework (ISO 14064-1, GHG Protocol, ISO 14067, ISO 14040 and ISO 14044, PEF, EN 15804+A2).
  
• The expected unit is clear: per year, per unit of product or per impact indicator.
  
• The boundary is written down: scopes for a corporate footprint; cradle-to-gate or cradle-to-grave for a product.
  
• You have checked whether a PCR, a PEFCR or a sector standard applies.
  
• The CBAM question is settled: covered goods or not.
  
• Site data is collected once, per meter, workshop and product reference.
  
• Each emission factor and secondary dataset has its source, year and licence.
  
• The external check is agreed: verification under ISO 14064-3:2019 or critical review.
  
• Any planned climate claim is reviewed against Directive (EU) 2024/825 and ISO 14068:2026.
  
• Only current editions are cited.