Is my carbon footprint calculated based on the merchant type?
We calculate your estimated carbon footprint using an industry-specific emissions factor assigned to the specific category allocated to the merchant type (the retailer) from which you made your purchase. Our partner, Cogo, has mapped Australian-specific emission factors (e.g., utilities, petrol, groceries, clothes & shoe shopping, etc.) to industry categories that we apply to eligible transactions from included accounts in the Westpac App. When we calculate your carbon footprint, it’s an estimate based on the total transaction amount, not the individual items making up that purchase.