E-invoicing, or electronic invoicing, is the digital exchange of invoices between businesses. It is a system in which B2B invoices are authenticated electronically by the Goods and Services Tax Network (GSTN) for further use on the common GST portal. E-invoicing has many benefits for both businesses and the government. For businesses, e-invoicing can reduce paperwork and manual processing, improve efficiency and accuracy, reduce costs, improve cash flow, and enhance transparency and compliance.