Free tool
Discount calculator
Take a percentage or a flat amount off a price, add a second discount on top, and see the final price, what the customer saves, and the one discount the chain works out to.
Price after discount
₹900.00
- Customer saves
- ₹100.00
- Discount
- 10%
Runs in your browser. Nothing you type is sent to HindustanBills.
Why 10% + 5% is not 15%
A second discount comes off the price that is already reduced. ₹1,000 less 10% is ₹900, and 5% off ₹900 is ₹855. The customer saves ₹145, which is 14.5%, not 15%.
On a GST bill, a discount shown on the invoice at the time of sale comes off the taxable value before GST is worked out. So the tax is charged on the discounted price, not the original one.
If the price you start from already includes GST, the calculator can show how much of the final price is tax.
Questions
Asked about this
Is GST charged before or after the discount?
After. Under section 15(3) of the CGST Act, a discount recorded on the invoice at the time of supply is excluded from the value of supply, so GST is worked out on the price after the discount.
How do I find the discount percentage from two prices?
Subtract the sale price from the original, divide by the original, and multiply by 100. Enter the difference as a flat discount here and the calculator shows the percentage.
Is anything I type here saved or sent anywhere?
No. The calculator runs in your browser and makes no request with the figures you enter.
More free tools
For the rest of the counter
- GST calculatorAdd GST to a price or take it out, with the CGST, SGST and IGST split.
- Profit margin calculatorMargin and markup from cost and price, or the price that earns the margin you want.
- Stock valuation calculatorClosing stock at cost, at selling price, and at the lower of the two, item by item.
- GST invoice generatorA GST tax invoice with HSN, CGST/SGST or IGST and amount in words, as a PDF.
- Purchase order generatorA purchase order for a supplier, with GST, delivery date and terms, as a PDF.
Discounts that keep the GST right on their own
In HindustanBills a discount on a line or on the whole bill comes off the taxable value before tax, on every bill.