Windows Accounting & Inventory Suite

I need a desktop application that runs natively on Windows and combines three essentials under one roof: real-time inventory tracking, straightforward invoicing, and clear financial reporting. The program will operate as a completely standalone solution—no integrations or external links to existing accounting packages or e-commerce platforms are required—so every key feature has to be built in.

Core workflow
• Inventory tracking must let me create items, monitor stock levels as sales or purchases post, and trigger low-stock alerts.
• Invoicing should generate professional PDFs, apply taxes or discounts automatically, and update inventory as soon as an invoice is issued.
• Financial reporting needs to cover at least profit & loss, balance sheet, and cash-flow summaries with the ability to export to Excel or CSV.

I expect an intuitive Windows-native interface, an installer that works from Windows 10 upward, and a lightweight local database (SQLite, embedded SQL Server, or similar) so users can get started without extra setup.

Deliverables
• Compiled installer (.exe) ready for distribution
• Full, well-commented source code
• Brief user guide covering setup, daily use, and backup/restore procedures

The project is complete once I can install the program on a fresh Windows machine, walk through a sample sale from inventory reduction to financial statement, and confirm all data persists after closing and reopening the software.