Turkish Fiscal POS Module

I want to add a full-fledged fiscal layer to our own Windows-based POS application so we can operate legally in Turkey. The goal is simple: every sale that our POS records must immediately trigger a tax-compliant desk receipt, with all figures calculated and formatted according to current Turkish regulations. We do not run an order or invoice subsystem—the module must focus solely on real-time receipts.

Selected scope of work
• Tax calculation exactly as required by Turkish law
• Automatic receipt generation after each transaction (no manual or batch mode)
• End-to-end compliance with Turkish fiscal legislation and device specifications

I will expose the POS transaction data through a clean API; you will return the formatted receipt and the tax report entries ready for submission or printing. The finished component should slot into our .NET codebase, come with clear integration instructions, and pass the official compliance tests. Include unit tests and a small demo that shows a sale, the calculated taxes, and the printed or PDF receipt.

If you have prior experience with Turkish VUK, fiscal printers, E-Fatura / E-Arşiv, or similar compliance projects, please highlight it when you reply—those insights will be invaluable.