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What is carbon footprinting for banks?

Published: February 16, 2022
Modified: August 6, 2025
Key Takeaways
  • Carbon footprinting allows banks to measure the greenhouse gas (GHG) emissions associated with their lending and investment portfolios—also known as financed emissions.
  • Understanding their carbon footprint helps banks set science-based targets and align their portfolios with net-zero pathways, playing a central role in global climate mitigation efforts.
  • Regulators globally are increasing expectations for climate-related disclosures, making carbon footprinting a critical tool for compliance and risk management.
  • Banks face challenges in footprinting accurately due to limitations in data availability, consistency, and industry-recognized methodologies—often requiring estimates or proxies.
  • Beyond compliance, carbon footprinting empowers banks to make informed decisions regarding asset allocation, client engagement, and decarbonization strategies.

Sustainable banking is transparent banking. Getting there means empowering bank customers with carbon footprinting based on their transaction. But it doesn’t just end there.

When it comes to carbon footprinting, banks are special. Why? Because they hold the key to accurate, useful carbon footprinting: payment transaction data.

Individual environmental impact can be traced back to our consumption habits. Harnessing payment data by enriching it with carbon emission values opens up a plethora of new opportunities.

In 2022, a trend is emerging: banks and financial institutions are engaging with sustainability. However, how banks embrace green banking and finance will separate the frontrunners from those at the back of the pack.  

Carbon footprints for consumers

Carbon is a currency. Behind every product and service we buy, there lies a carbon price tag. That price tag has been invisible to the eye of consumer – until now.  

By providing customer transparency, by telling clients the whole story behind their money, banks play a vital role in the fight against climate change: inspiring widespread climate action.  

The rapidly growing climate-conscious customer segment is looking to harmonize banking with their eagerness to perform climate action. To help them do that, banks need to act.  

Banks massively surpass their potential for impact by involving their customers in climate action instead of just relying on in-house CSR initiatives alone. Imagine the impact a 10% reduction in the carbon footprints of your customers. Combined from all customer segments -now that’s scalable climate action.

The transparency that environmental footprinting achieves lays the basis for climate engagement. From there, financial institutions can educate and nudge consumers through climate insights on interesting tips, tricks, and fun facts. That opens the door to more personalized banking experiences, where corresponding offsetting and ESG packages can be tailored to fit customer preference.  

How does carbon footprinting work?

Many methodologies and philosophies on carbon footprinting exist – some more robust than others. Carbon footprinting of the basis of payment transactions is a specialized approach that takes into account the integral role that consumption habits have on individual environmental impact.  

Most approaches break spending down into categories, for example, groceries, gas, transportation, restaurants, and the like. These can be broken down into further subcategories for more accurate categorization. Considering the variation that exists within those categories, some methodologies account for country-specific variables.  

The categories are then contextualized with research and publicly available emissions data to give consumers their calculations. Through customer feedback loops, the calculations are then refined.  

How long was your flight? What are your diet preferences? What kind of fuel did you fill up with?

Carbon, however, isn’t the only lens through which environmental footprints can be measured. Footprinting is becoming just as diverse and rich as the environment is.

Clarity AI

Clarity AI is a leading sustainability technology platform, recognized as a Leader in The Forrester Wave: ESG Data & Analytics Providers, Q3 2024 and “Best Overall ESG Tech Provider” in the ESG Insight Awards. Founded in 2017, Clarity AI helps investors measure and manage impact with data-driven, transparent insights.

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