The environmental impact of commerce is increasingly a factor in how consumers and businesses think about their supply chains — but the payment layer has largely been invisible in those conversations. PayGreen was founded in Paris in 2016 to change that. Its platform adds a sustainability layer to payment processing, enabling merchants to calculate and offset the carbon footprint of transactions, offer customers the option to round up for environmental causes, and communicate their sustainability commitments at the point of payment. The proposition connects two trends that are converging in European commerce: the growth of purpose-driven consumer brands and the tightening of corporate sustainability reporting requirements. PayGreen targets merchants who want their payment infrastructure to reflect their values — not as a marketing exercise, but as a genuine operational commitment. It has built partnerships across the French retail and e-commerce sector and expanded its product to include broader CSR tooling. In a payments market where differentiation on pure processing capability is increasingly difficult, PayGreen's sustainability positioning is a genuine alternative axis of competition — and one that is likely to become more relevant as European sustainability regulation tightens.