Invoice Expert software (version 4.36) is a comprehensive billing and invoicing solution that supports multiple currencies and tax rates. It allows users to create customizable invoices, quotes, and purchase orders with ease, including the ability to add logos and other branding elements. The software also offers inventory management and tracking, as well as the ability to generate reports for financial analysis and forecasting. Additionally, it can integrate with popular payment gateways and accounting software for streamlined financial management.