Invoice Zip, previously known as Tiny Invoice, is invoicing software designed to help freelancers, contractors, and small businesses manage billing and everyday business tasks. Its platform lets users create, send, and track invoices and estimates, issue purchase orders and credit memos, and monitor payments. Business management tools include client and item management, expense tracking, time tracking, reports, and attachment and receipt scanning. Invoice Zip also offers invoice templates to help businesses present a consistent brand identity, alongside automation and smart invoice management features.

The company provides online business resources beyond its core software, including downloadable templates for quotes, receipts, work orders, estimates, invoices, purchase orders, and credit memos. Free generators can create invoices, invoice numbers, estimates, credit memos, and purchase orders. Financial calculators cover topics such as loan costs, profit margins, return on investment, and sales tax. Invoice Zip says its tools serve customers in more than 170 countries, and its app is available for iOS and Android.