1Click Invoice is a simple and intuitive online invoicing software that enables businesses to create professional-looking quotes, invoices, and credit notes with just a few clicks. Users can manage customers, items, payments, users, taxes, terms, and payment methods, all accessible from anywhere with a web browser. The platform allows for easy tracking of unpaid, partially paid, and overdue invoices. Invoices can be customized with personalized numbering systems, titles, subtitles, date and price formats, notes, and company logos. Users can add discounts per item, apply two taxes per item (with the second tax being compounded or non-compounded), accept partial payments, and use multiple payment methods per invoice. Quotes can be converted to invoices, and credit notes can be created against invoices. Documents can be copied, sent or downloaded as PDFs, emailed, and printed.