Step 1: Understanding the question:
The goods move from Jaipur (Rajasthan) to Delhi. These are two different states or Union Territories, so it is an inter-state supply.
On an inter-state supply only IGST is charged. CGST and SGST are nil.
Step 2: Discount and selling price:
Discount = 20% of ₹1,00,000 = ₹20,000.
Selling price (discounted value) = ₹1,00,000 - ₹20,000 = ₹80,000.
Step 3: GST on the discounted value:
GST is charged on the price after discount, not on the MRP.
IGST = 28% of ₹80,000 = ₹22,400.
CGST = nil and SGST = nil.
Step 4: Amount of bill:
Amount of bill = ₹80,000 + ₹22,400 = ₹1,02,400.
Final Answer:
Discount ₹20,000; selling price ₹80,000; CGST nil; SGST nil; IGST ₹22,400; amount of bill ₹1,02,400.