When you make a transaction, we automatically categorise it into 1 of 602 categories: things like groceries, flights, petrol, etc. For each category, we know the average amount of carbon emissions created when someone spends £1. Using the amount of each transaction, and the current inflation rates, we can calculate the emissions of your transaction 🌍
Using accurate data that you can trust is one of our biggest priorities - we use data provided to the UK government by the University of Leeds 🎓
Soon we'll be making our calculations even more accurate with 2 extra types of data:
- Customer-specific information. E.g. for groceries, are you a vegan or a meat-eater? The types of food you buy will affect the carbon emissions of your grocery shop.
- Vendor-specific information. In some cases, we can get data on the individual brands you buy from, which lets us calculate a specific emission for your purchase instead of using the category average.