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Use the discount calculator below to find the final price, the amount saved, and the real discount % for a single product or a full cart with GST.
Check what a deal is really worth before you pay.
Working out a full cart with GST?
A discount calculator works out what a price becomes once an offer comes off it. Give it a price and a discount, and it returns the final price, the money saved, and the real discount %, so nobody has to do the maths by hand.
For a shopper, that means knowing what a deal is really worth before you pay. For a retailer, it means knowing what the customer pays, how much GST sits inside that price, and how much of your margin the offer takes.
For a full order with more than one product, a coupon or prepaid offer, and GST. Built for retailers who need to see the final bill and what is left for them.
Not sure which GST rate applies & how it matters for discount? Check here
A coupon, prepaid offer or cart-value offer. Each one applies to the total left after the one before it.
Prices include GST
Keep it on if you sell at MRP. Turn it off if you add GST on top of your price.
What one unit costs you, before GST. Only needed to see your profit.
One price, one offer, nothing else in the basket. A ₹1,000 product at 20% off leaves ₹800, and the ₹200 is the full saving. This is how a shopper checks a deal, and how retailers check one product before a sale goes live.
Nothing stacks, and no tax is separated; the simple discount calculator gives you the answer in one step.
Several products, each with its own price, quantity, and GST rate, plus a coupon or prepaid offer sitting on top of the order. The offers apply one after another and GST comes out at the end, so 20% plus 10% offer never comes to 30% off.
That is what the cart discount calculator is built to calculate.
Pick your discount type. Percentage off if the offer is a %, fixed amount off if it is a flat ₹ figure.
Enter the product price. Input the listed price before any offer comes off it.
Enter the discount % or amount. The field switches between % and ₹ with your selection in discount type.
Hit Calculate. What you pay, what you save, and the real discount % appear together.
Add your products. One row per product, with the price of a single unit and the quantity. Add more rows as your cart grows.
Set the GST rate on each product. Rates differ by product, so a cart can carry more than one slab. Use the rate finder if you are unsure.
Enter product discounts. The offer runs on that product alone, in % or ₹.
Add the offer on the whole order. Your coupon, prepaid offer, or cart-value offer. Each one applies to the total left after the one before it.
Choose include or exclude GST. Keep Prices include GST on when you sell at MRP. Turn it off when you add GST on top of your price.
Add your cost per unit. Optional, and only if you want to see the profit left after the offer.
Hit Calculate. Order value, savings, discount %, value before GST, GST, profit, and final price appear together.
When more than one offer applies, each one comes off the price left after the one before it, not off the original price. That is why 20%, 10%, and 5% never add up to 35% off.
| Discount Stack Steps | Amount |
|---|---|
| Product price (MRP) | ₹1,000 |
| 20% product discount | −₹200 = ₹800 |
| 10% coupon | −₹80 = ₹720 |
| 5% prepaid offer | −₹36 = ₹684 |
| Total saved | ₹316, which is 31.6%, not 35% |
Need the full GST rate breakdown with a list of rates that apply to your product? Use our GST Calculator to know what rate to apply.
A good offer still needs a checkout that closes it.
GoKwik is a checkout and conversion platform for Indian e-commerce and D2C brands, turning carts into paid orders.