Billing, Cash Handling and Point of Sale
This section covers Billing, Cash Handling and Point of Sale. The exam tests the billing sequence, POS use, cash drawer control, payment modes, GST invoices and end-of-day reconciliation.
Core rules
A POS system records sales, prices, taxes and stock movements. Scan or enter each item, check the quantity and price, apply the correct tax rate, and print or send the bill. A tax invoice normally shows supplier details, invoice number and date, customer details where required, HSN or SAC code, description, quantity, taxable value, tax rate and amount, and total. Keep the opening float separate from sales cash. Count cash at closing, subtract the opening float and withdrawals, and compare with the POS report. Record voids, refunds and no-sales with a reason and authorisation.
Accept cash, card and UPI only through authorised channels. Check notes for security features and never store a customer's PIN. For refunds, follow policy, verify the bill and take a receipt.
Worked example
A customer buys items worth ₹1,000 before tax, with GST at 5%. Tax = ₹50, so the bill total is ₹1,050. The customer pays ₹2,000 in cash; change = ₹2,000 − ₹1,050 = ₹950. At closing, if the drawer has ₹5,950 including a ₹1,000 opening float and ₹1,000 in card/UPI is shown separately, cash sales should be ₹4,950. The reasoning keeps float, cash sales and digital payments distinct.
Traps
Do not mix personal money with the drawer. Do not calculate GST on the total when prices are tax-inclusive without extracting it. Do not process a void without authorisation. Do not accept a card or UPI screenshot as proof without checking the POS or bank confirmation.
Key points
- Follow a fixed scan, check, tax and payment sequence.
- Keep the opening float separate from sales cash.
- Reconcile cash, card and UPI totals at closing.
- Record voids, refunds and no-sales with authorisation.
- Issue a compliant invoice with HSN or SAC and tax details.