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Financed Emissions Guide: PCAF, Scope 3 & Reporting

A practical financed emissions guide for financial institutions covering PCAF, Scope 3 Category 15, GHG accounting, reporting and disclosure requirements.

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Introduction

For banks, insurers, lenders and asset managers, the largest sustainability impact may not come from offices, company vehicles or business travel. It may come from the companies, projects and assets they finance.

Financed emissions represent the share of emissions linked to the capital an organisation provides. The initial challenge is not to measure every transaction immediately with flawless accuracy, but to understand exposure concentrations, assess data quality, and clarify applicable reporting expectations.

Who This Guide Is For

This guide is for sustainability, compliance, risk and investment teams at banks, insurers, lenders, asset managers and other financial institutions — particularly where ESG, carbon accounting and disclosures are managed by a focused team.

At a Glance

  • The Core Issue

    A financial institution’s largest emissions exposure sits in lending, investment or underwriting activities rather than in its own offices, vehicles or purchased energy.

  • What to Focus On

    Start with financed emissions, portfolio data quality, PCAF asset classes and the specific regulatory disclosure expectations relevant to your organisation.

  • First Step

    Identify your largest lending, investment or underwriting exposures and map the sustainability information you already hold across counterparties.

What you need to understand

Measuring portfolio footprint requires translating standard corporate greenhouse gas accounting into investment-specific metrics across distributed asset portfolios.

  • Practical tip

    Begin by assessing priority asset classes such as listed equity, corporate bonds, and business loans where standardized exposure data is most readily available.

  • Common mistake

    Do not treat financed emissions merely as a marketing exercise or blend operational emissions with Scope 3 Category 15 without clear boundary distinctions.

  • Key insight

    PCAF serves to measure financed emissions, the GHG Protocol sets accounting principles, SFDR governs product-level disclosures, and CSRD mandates corporate sustainability reporting.

  • Practical example

    Financed emissions are estimated using an attribution factor: (Financing provided ÷ Company value) × Company emissions.

How to get started

Establish a transparent, repeatable measurement workflow before issuing external commitments or sustainability declarations.

  1. Map Exposure

    Identify largest lending, underwriting, and investment positions across asset classes.

  2. Audit Available Data

    Evaluate reported client metrics versus sectors requiring modelled estimates.

  3. Select Methodologies

    Apply PCAF attribution formulas according to each specific asset class.

  4. Document Boundaries

    Record all calculation assumptions, data quality scores, and analytical exclusions.

Complete data coverage is not required to begin; establishing consistent accounting methods and disclosing confidence scores is what creates credibility.

See Detailed Method

Review asset classes systematically, identify attribution factors using borrower enterprise value including cash (EVIC) or total balance sheet assets, and cross-reference verified disclosures against accepted proxy benchmarks.

Rules, Frameworks & Reporting Expectations

Distinct regulatory instruments govern carbon measurement, entity-level disclosure, and product-specific investor reporting.

  • PCAF Standard

    For: Banks, asset managers, insurers, and institutional lenders

    Provides a harmonised global framework for measuring and reporting greenhouse gas emissions associated with loans, investments, and underwriting.

    What to do next

    Determine applicable asset classes in your portfolio and apply standardized attribution rules to calculate portfolio emissions.

    Learn More (opens carbonaccountingfinancials.com)

  • SFDR

    For: Financial market participants and financial advisers in the EU

    Mandates transparency on how financial entities integrate sustainability risks and report adverse ESG impacts at entity and product levels.

    What to do next

    Verify that investment classifications and marketing materials are corroborated by validated portfolio data.

    Learn More (opens finance.ec.europa.eu)

  • CSRD & ESRS

    For: EU undertakings and non-EU entities with significant EU presence

    Requires comprehensive double materiality reporting across environmental, social, and governance standards under ESRS guidelines.

    What to do next

    Examine disclosures from in-scope counterparties to source primary emissions data for portfolio calculations.

    Learn More (opens finance.ec.europa.eu)

Real-world Spotlight

HSBC

Global Banking & Financial Services

Reporting

HSBC integrates financed emissions as a central benchmark to manage portfolio decarbonisation across high-impact economic activities.

What it reports

  • Separation of on-balance-sheet financed emissions and facilitated emissions
  • Sector-specific targets for oil and gas, power, utilities, and aviation
  • Data quality scores across prioritized lending portfolios
  • Methodological baselines aligned with international carbon accounting guidance

Why it matters

  • Demonstrates transparent disclosure of portfolio boundaries and limitations
  • Provides clear segmentation across intensive industrial sectors
  • Illustrates practical handling of estimation where primary data is incomplete
  • Highlights alignment between financing decisions and transition milestones
View Annual Report (opens hsbc.com)

Five Steps to Get Started

  1. Identify Exposures

    Determine your largest lending, investment, and underwriting asset positions.

  2. Inventory Data

    Review current client disclosures and compile existing carbon metrics.

  3. Prioritise Portfolios

    Focus initial accounting on sectors carrying significant carbon intensity.

  4. Assign Ownership

    Designate dedicated operational owners for data collection and PCAF methodology.

  5. Document Assumptions

    Record proxies, exclusions, and methodological limits prior to public reporting.

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