Custom Accounts & Invoice Generator Needed

I am in need of a tool specifically designed to help me handle accounting matters. The system should be geared towards simplicity, yet should also offer detailed features concerning GST invoices, bills of supply, and inventory management. The desired key functionalities: * Customer Ledger Maintenance: A feature that enables effective management and tracking of customer transactions. * GST Invoice Creation: The generator should reliably create accurate GST invoices in adherence to local laws. * Bill of Supply Creation: Alongside GST invoices, the generator should also be apt in creating well-detailed bills of supply. For this project, professionals experienced in system and software development are recommended, especially those with prior background in accounting systems design. We are particularly interested in working with individuals who have developed accounting and invoicing software before. Previous work in integrating GST invoice creation and bill of supply creation into a system will be highly beneficial. We have a very stringent budget of 80 USD for the web app , host and domain will be ours. Make sure you quote in budget and maximum days of deployment is 10 days. Go through the requirement document well before bidding.