Online invoicing software is a cloud-based tool that enables businesses to create, send, and manage invoices electronically, streamlining the billing process and improving cash flow. It allows users to generate professional invoices quickly, track payments, set up automatic reminders, and accept online payments, all from a centralized platform. This software reduces manual paperwork, minimizes errors, and enhances efficiency, especially for freelancers, small businesses, and remote teams. Many online invoicing solutions also integrate with accounting and CRM systems, providing a comprehensive financial overview and simplifying tax preparation.