Small business use The Invoice Client Manager to organize and run the client side of their businesses. All client details, progress reports, attendance, appointment and payment details are stored in a database. Income can be calculated between any two dates making tax time a breeze. Overdue accounts are revealed at the press of a button. Professional invoices are created and printed for your clients. This is an essential tool for all small business and allows them to invoice and manage their clients with a simple and intelligent system.