Why your money has a carbon footprint
Banks, pension funds, and investment managers deploy the money they hold into companies and projects across the economy. Those companies emit greenhouse gases through their operations. The Partnership for Carbon Accounting Financials (PCAF), whose Global GHG Accounting and Reporting Standard Decarb applies, allocates a share of each portfolio company’s annual emissions back to each investor in proportion to their ownership stake or loan exposure. The result is a financed emissions figure — an estimated attribution of real-world emissions to each dollar held.
This is the same methodology major financial institutions use to report their Scope 3 Category 15 financed emissions under the GHG Protocol. PCAF estimates that financial institutions collectively finance approximately 700 times more emissions than they produce directly through their own operations — which is why the finance sector’s indirect impact dwarfs its direct footprint. The same logic applies at the individual level: where your money sits matters for your estimated emissions, independent of how you heat your home or what you eat.
How financed emissions are calculated for individuals
Decarb uses PCAF-aligned emission factors derived from GreenFi and Alexander et al. (2023) to estimate financed emissions at the individual level. The calculation applies a sector-weighted average emissions intensity to each account type — bank deposits, diversified investment funds, and pension funds — based on the typical asset allocation and portfolio composition of each.
| Account type | Emission factor | Example: $50,000 balance | Source |
|---|---|---|---|
| Bank deposit / savings | 0.24 kg CO₂e / $1,000 | ~0.012 tons CO₂e/yr | PCAF / GreenFi |
| Diversified investment fund | ~20 kg CO₂e / $1,000 | ~1.0 ton CO₂e/yr | Alexander et al. 2023 |
| Pension fund (typical US) | ~18 kg CO₂e / $1,000 | ~0.9 ton CO₂e/yr | PCAF 2022 |
Scale in context
An individual with $200,000 in a standard diversified fund carries estimated financed emissions of approximately 4 tons CO₂e per year — equivalent to the entire food-related footprint of the average American. This category becomes the dominant one for individuals with significant savings and relatively low direct emissions from energy and transport. Source: Alexander et al. (2023), PCAF Global Standard (2022).
What drives the variation
The emissions intensity of a fund depends on its sector composition. A fund with significant exposure to oil and gas, utilities, materials, and heavy industry will carry higher financed emissions per dollar than a fund concentrated in technology, healthcare, or consumer goods. According to MSCI’s ESG Research (2023), the emissions intensity of the S&P 500 energy sector runs approximately 15 times higher than the technology sector per dollar of revenue. A fund that is 20% weighted toward energy therefore carries materially higher financed emissions than one that is 5% weighted toward energy, even if the total balance is the same.
Pension funds vary significantly by manager and strategy. Public sector pension funds in the US have historically carried higher fossil fuel exposure than private sector equivalents, though many are now divesting. The Federal Reserve’s Survey of Consumer Finances (2022) estimates median US household financial asset holdings at approximately $52,000 — but the distribution is highly skewed, with wealthier households holding orders of magnitude more, and therefore carrying proportionally larger financed emissions.
How to reduce financed emissions
Three practical levers exist for reducing financed emissions, roughly in order of impact and ease.
Switch to a low-carbon index fund. ESG-screened index funds and climate-focused ETFs exclude or underweight high-emission sectors. Vanguard, BlackRock, and Fidelity all offer low-carbon variants of their major index funds at comparable expense ratios. The emissions intensity of a broad ESG fund is typically 30–50% lower than an unscreened equivalent, according to MSCI ESG Research (2023). This is a Green Reward: performance data does not consistently show ESG funds underperforming their benchmarks, meaning the emissions reduction carries no expected financial cost.
Switch to a green bank. The banking sector’s financed emissions factor is low per dollar relative to investment funds, but the reputational and systemic impact of switching matters. Organisations such as the Sierra Club publish lists of US banks ranked by fossil fuel financing. Switching from a major bank with high fossil fuel exposure to a community bank or credit union with no direct fossil fuel lending can reduce the attributed emissions on deposit balances and signals demand for lower-carbon banking.
Engage with your pension provider. For most individuals, the pension fund is the largest single financial asset and therefore the largest source of financed emissions. Many US pension providers now offer a sustainable or ESG investment option within their plan. If yours does, switching the default allocation to the lower-carbon option is the single highest-impact action in this category. If no option exists, writing to the fund manager to request one is a legitimate and increasingly common form of investor engagement.
A note on data limitations
The PCAF emission factor for bank deposits (0.24 kg CO₂e per $1,000) is an average across the US banking sector and is known to overstate actual attributed emissions for most retail depositors — it is flagged in Decarb’s methodology as a limitation pending better data. The investment fund factors carry wider uncertainty than energy or transport figures, which are based on direct measurement. These are estimates with a higher uncertainty range than other categories, and Decarb presents them as such. For more detail, see Decarb’s methodology.
Frequently asked questions
What are financed emissions?
Financed emissions are the greenhouse gas emissions attributed to an individual or institution through their financial holdings — savings, investments, and pension funds. The attribution follows the PCAF methodology: each investor receives a share of the portfolio company’s annual emissions proportional to their ownership stake. The result is an estimated tons CO₂e figure that reflects the climate impact of where your money is deployed, independent of your direct consumption.
How much do financed emissions add to my personal footprint?
For someone with $50,000 in a standard diversified fund, financed emissions add approximately 1 ton CO₂e per year. For $200,000 in the same fund, the figure is approximately 4 tons CO₂e — comparable to eliminating all personal transport emissions. The figure scales with portfolio size and is higher for funds with significant energy sector exposure. Bank deposit emissions are much lower per dollar than investment fund emissions.
Does switching to an ESG fund actually reduce emissions?
Switching to an ESG-screened fund reduces your attributed financed emissions because the fund holds companies with lower average emissions intensity. According to MSCI ESG Research (2023), broad ESG funds typically carry 30–50% lower emissions intensity than unscreened equivalents. The reduction is in attributed emissions — it does not directly cause the excluded companies to emit less. However, sustained capital flows away from high-emission sectors do raise their cost of capital over time, which is the systemic mechanism through which investor behaviour influences corporate emissions trajectories.
Why does my bank account have a carbon footprint?
Banks lend depositor funds to businesses and projects across the economy. Those loans finance real-world activity that generates greenhouse gas emissions. The PCAF standard attributes a share of those financed emissions back to depositors in proportion to their balance as a fraction of the bank’s total deposits. The resulting per-dollar factor for retail bank deposits is low — approximately 0.24 kg CO₂e per $1,000 — but it is a real attribution that Decarb includes for completeness. The limitation is that this average overstates actual emissions for depositors at banks with low fossil fuel exposure.
How do I find out the emissions intensity of my pension fund?
Many large US pension and retirement fund managers now publish a carbon footprint or emissions intensity figure for their funds, typically expressed in tons CO₂e per $1 million invested. Look for this in the fund’s ESG or sustainability report, or in the fund factsheet. Tools such as As You Sow’s Fossil Free Funds (fossilfreefunds.org) allow you to search US mutual funds and ETFs by fossil fuel exposure and emissions intensity. If your provider does not publish this data, contacting them directly to request it is a reasonable first step.
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Sources
- PCAF (Partnership for Carbon Accounting Financials), The Global GHG Accounting and Reporting Standard for the Financial Industry, Second Edition. 2022. carbonaccountingfinancials.com
- Alexander, R. et al., GreenFi Household Finance Emission Factors. 2023.
- GHG Protocol, Corporate Value Chain (Scope 3) Accounting and Reporting Standard, Category 15: Investments. Washington DC: World Resources Institute.
- MSCI ESG Research, Emissions Intensity by Sector and Fund Type. MSCI, 2023.
- Federal Reserve, Survey of Consumer Finances 2022. Washington DC: Federal Reserve Board, 2023.
- As You Sow, Fossil Free Funds. fossilfreefunds.org
