# Understand how cardholder spending behavior impacts
carbon emissions
source: https://developer.mastercard.com/carbon-calculator/product/carbon-calculator/index.md

## Explore your climate footprint {#explore-your-climate-footprint}

![Multi-currency support](https://static.developer.mastercard.com/content/carbon-calculator/uploads/multicurrency_support.svg)

###### Multi-currency support {#multi-currency-support}

Calculate carbon emissions for transactions made in any major currency.
![Historical footprint](https://static.developer.mastercard.com/content/carbon-calculator/uploads/historical_footprint.svg)

###### Historical footprint {#historical-footprint}

Review carbon impact of past spending.
![Near-real time notifications](https://static.developer.mastercard.com/content/carbon-calculator/uploads/nearreal_time_notifs.svg)

###### Near-real time notifications {#near-real-time-notifications}

Monitor real-time impact on the environment as transactions are made.

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## How it works {#how-it-works}

###### Step 1 {#step-1}

###### Cardholder views the carbon score on the app or website. {#cardholder-views-the-carbon-score-on-the-app-or-website}

###### Step 2 {#step-2}

###### Issuer shows the carbon score details to the cardholder as per their spending. {#issuer-shows-the-carbon-score-details-to-the-cardholder-as-per-their-spending}

###### Step 3 {#step-3}

###### Mastercard calculates the carbon and social cost impact of the transactions. {#mastercard-calculates-the-carbon-and-social-cost-impact-of-the-transactions}

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## Why use it {#why-use-it}

Mastercard research across multiple markets confirms strong cardholder demand for payment solutions that address sustainability

### 70%

of consumers considered sustainability and environmental friendliness an important feature of a bank


The Motley Fool Ascent survey distributed via Pollfish on January 4, 2024.

### 40% +

of consumers take sustainability into account before purchasing services from companies in the financial sector

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<https://finansforbundet.dk/en/news/2022/bank-customers-demand-sustainability/>

### 8 out of 10

climate-conscious bank customers will be prepared to switch banks if they do not feel convinced that sustainability is sufficiently prioritized

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<https://finansforbundet.dk/en/news/2022/bank-customers-demand-sustainability/>

### Resources {#resources}

API
Carbon Calculator

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Enables cardholders to measure the carbon impact based on spending behavior.
[View Documentation](https://developer.mastercard.com/carbon-calculator/documentation/)

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**Used By** Issuers, Merchants and Payment Service Providers

**Regions** This API is available globally except for Cuba, Iran, North Korea, Sudan and Syria
**Pricing** [Contact us](mailto:carboncalculator@mastercard.com) for pricing information

**Supported Cards ![](https://static.developer.mastercard.com/content/carbon-calculator/uploads/card_mastercard.svg)**
API
Carbon Calculator India

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Enables cardholders to measure the carbon impact based on spending behavior.
[View Documentation](https://developer.mastercard.com/carbon-calculator-ios/documentation/)

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**Used By** Issuers, Merchants and Payment Service Providers

**Regions** This API is available in India only
**Pricing** [Contact us](mailto:carboncalculator@mastercard.com) for pricing information

**Supported Cards ![](https://static.developer.mastercard.com/content/carbon-calculator/uploads/card_mastercard.svg)**
FILE-BASED SCORING
Carbon Calculator China

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Enables cardholders to measure the carbon impact based on spending behavior.
[View Documentation](https://developer.mastercard.com/carbon-calculator-china/documentation/)

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**Used By** Issuers, Merchants, and Payment Service Providers

**Regions** This is available in China only
**Pricing** [Contact us](mailto:carboncalculator@mastercard.com) for pricing information

**Supported Cards ![](https://static.developer.mastercard.com/content/carbon-calculator/uploads/card_mastercard.svg)**

## Use Cases {#use-cases}

![](https://static.developer.mastercard.com/content/carbon-calculator/uploads/usecase1.svg)

### View carbon impact {#view-carbon-impact}

Create apps to let cardholders view their historical carbon impact
![](https://static.developer.mastercard.com/content/carbon-calculator/uploads/usecase2.svg)

### Motivate positive behavior {#motivate-positive-behavior}

Encourage cardholders by setting footprint goals and utilize the service to track progress
![](https://static.developer.mastercard.com/content/carbon-calculator/uploads/usecase3.svg)

### Present actionable way to compensate for footprint {#present-actionable-way-to-compensate-for-footprint}

Offer options for cardholders to donate as a means of compensating for carbon impact.

## Trusted by Industry Leaders {#trusted-by-industry-leaders}

![Nexi](https://static.developer.mastercard.com/content/carbon-calculator/Images/existing-customers/nexi.png) ![UA Finance Limited](https://static.developer.mastercard.com/content/carbon-calculator/Images/existing-customers/UA_finance.jpg) ![Rabitabank](https://static.developer.mastercard.com/content/carbon-calculator/Images/existing-customers/rabitabank.png)

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## Build and support tools {#build-and-support-tools}

###### Find our documentation and quick start guide on how to start developing a new project on Mastercard Developers {#find-our-documentation-and-quick-start-guide-on-how-to-start-developing-a-new-project-on-mastercard-developers}

###### View the documentation {#view-the-documentation}

Create an account and start building. Accessing our API only takes a few minutes


[India](https://developer.mastercard.com/carbon-calculator/carbon-calculator-ios/documentation/index.md) \|
[Global](https://developer.mastercard.com/carbon-calculator/carbon-calculator/documentation/index.md) \|
[China](https://developer.mastercard.com/carbon-calculator/carbon-calculator-china/documentation/index.md)

###### Quick start guide {#quick-start-guide}

Explore our ready-to-go guide and get up and running in less than 30 minutes


[View quick start guide](https://developer.mastercard.com/carbon-calculator/platform/documentation/getting-started-with-mastercard-apis/quick-start-guide/index.md)

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