We've partnered with [Lune](https://lune.co/), a leading environmental data analytics company, to provide you with accurate and insightful information about the carbon emissions associated with your card spend. Lune estimates the carbon emissions of a purchase at the time of the transaction based on product category average emission factors, the monetary value of product, and country. Lune calculations are based on the leading international standard for emissions calculations, the GHG Protocol.
In addition to the GHG Protocol, Lune follows the leading international standard for logistics emissions calculations, the [GLEC Framework](https://www.smartfreightcentre.org/en/our-programs/global-logistics-emissions-council/), and are audited and accredited by [Smart Freight Centre](https://www.smartfreightcentre.org/en/).
Finally, for business travel Lune uses the only internationally approved tool to estimate carbon emissions from air travel - [The ICAO Carbon Emissions Calculator](https://www.icao.int/environmental-protection/CarbonOffset/Pages/ICEC-API-Pricing-Table.aspx).
By following established protocols and frameworks and strict adherence to best practices, Lune is our trusted partner for reliable and credible estimate of an organisation's greenhouse gas emissions.
For more information please visit [Lune FAQ and methodology document](https://luneco.notion.site/FAQs-for-spend-based-emissions-calculations-with-Lune-a4591d4cb2b44873b9af7cb25f5bcb25).