Payment systems consume energy, materials, and resources and generate waste, emissions, and pollution. For instance, paper-based payment methods require trees, water, ink, and transportation, resulting in carbon footprint and landfill. Digital payment methods such as cards and mobile apps rely on electricity, networks, servers, and devices and contribute to e-waste and data security issues. To reduce the environmental impact of your payment systems, you can choose low-carbon and renewable energy sources for your payment infrastructure and operations, opt for paperless and contactless payment options that reduce physical materials and contact, recycle, reuse, and dispose of your payment equipment and devices responsibly, monitor and measure your payment system's energy consumption and carbon footprint, as well as implement green policies and practices for your payment system's design, development, and maintenance.