Professional Excel Invoice with Auto GST -- 2

I’m looking for a polished, ready-to-use invoice template in Microsoft Excel that fits a services business. The sheet must calculate GST automatically, apply any line-level or overall discount I enter, and roll everything up into clear subtotals and grand totals.

Key points I need covered:
• Brief service-description column beside each line item (no lengthy text boxes).
• Dynamic GST rate cell so I can change the percentage later.
• Discount field that adjusts totals instantly.
• Space at the top for my company logo (please leave a placeholder if you don’t have the file).
• Clean, professional layout that prints neatly on A4 and looks equally good when saved as PDF.

Please protect the formulas yet keep columns for quantity, rate, and brief description fully editable. I’m working with Excel 2016+, so ensure full compatibility.

My budget is tight—about 5 USDT—and I need the finished file within the next 24 hours. If this is straightforward for you, I’d love to receive the Excel workbook plus a short note explaining where to adjust the tax rate and discounts.