Dear sir,
I can create for You the Excel workbook, where 2 different type of invoices will be created. Moreover, I can create for your also the evidence of the invoices issued. Each Invoice can be created with their own QR payment code, so Your customers will not have to retype the bank account number, variable symbol, message for the recipient, amount, and the currency. They will be able to simply pay the invoice from their bank. The color of the QR code can be configurable as well.
The workbook will have unified supplier's business information (Business name, the address, VAT ID, Phone, and the e-mail address), as well as the same for the client. Once the Invoice will be issued, it will be stored in the worksheet with issued invoices, and the invoice will be printed into the PDF file, so You will be able to make it signed by the digital signature and send it to the customer's e-mail address.
Because of my long-term IT knowledge skills (more than 22 years use of complex EXCEL Formulas and VBA macros coding) and already prepared solution, I believe I will be a good match for Your needs, and eventual adjustments will be performed swiftly as per Your requirements.
Thanks for Your consideration of my offer.
Kind regards,
Michal