quickbooks tool hub is a tool that helps businesses create their invoices and track payments efficiently. The service has over 100 tools like bill splitting, lead generation, and cross-selling. It is free for up to two businesses, but for larger businesses wanting more tools, there are some paid services offered as well. How do I use the service?. The tool is used by setting up a QuickBooks account, and then quickly creating invoices, tracking payments, selling products, and generating leads. There are a bunch more features available as well with that free version. It is easy to set up, but there will be some training involved to make it work correctly.