SHOPPING · ON YOUR DEVICE
Discount calculator
Enter a price and a discount percentage. Add a second discount or tax to see what you really pay.
EXAMPLE ESTIMATE
Your estimate
Enter your values and select Calculate.
Estimates use your assumptions. Calculations use unrounded values; displayed figures are rounded.
HOW IT WORKS
A useful estimate starts with clear inputs.
- Step 1
Enter the original price and the discount percentage.
- Step 2
Optionally add a second discount, such as a coupon, and any tax.
- Step 3
Calculate to see the sale price, what you save and the effective discount.
A 20% discount on 2,000 saves 400 and leaves 1,600. Adding a 10% coupon on top leaves 1,440, a 28% effective discount.
Calculation assumptions and limits
Discounts are applied one after the other, each on the price left by the previous one, so two discounts are worth less than their sum. Tax, if entered, is added after both discounts. Shipping, fees, cashback and minimum-purchase rules are excluded.
Can I use this with my local currency?
Yes. All inputs in one calculation must use the same currency. The currency selector changes number formatting and labels; it does not look up exchange rates or convert your amounts. Local loan rules and products may calculate costs differently.
Are my numbers saved?
No. Your inputs and results stay in this page’s memory. Reloading or leaving clears them. Download the CSV or print the result if you want a copy.
Find the real price after a discount
Enter the original price and the discount percentage to see the sale price and how much you save. If a shop offers a second discount, such as a coupon on top of a sale, add it to see the effective discount.
You can also add a tax rate to see the final amount at the till. The table shows every step, so you can check the shop’s arithmetic or compare two offers.
Free to use. No sign-up required.
How to use this tool
- Enter the original price and the discount percentage.
- Optionally add a second discount and a tax rate.
- Calculate to see the sale price, your saving and the effective discount.
A practical example
A 20% discount on 2,000 gives 1,600. Adding a 10% coupon gives 1,440, which is 28% off the original price.
Before you finish
Two discounts are applied one after the other, so they are worth less than their sum. Check whether the shop applies them in the same order.
How a percentage discount works
A discount of 20% takes one fifth off the price. The sale price is the original price multiplied by 0.8, and the saving is the original price multiplied by 0.2. A 2,000 item at 20% off costs 1,600 and saves 400.
Why two discounts are not added together
A second discount applies to the price left after the first one. A 20% sale followed by a 10% coupon is not 30% off. It is 2,000 × 0.8 × 0.9 = 1,440, which is 28% off. The calculator shows the effective discount so you can compare offers fairly.
Comparing offers
Percentage and flat discounts can be compared by converting the flat amount to a percentage of the price. 300 off a 2,000 item is 15%. Remember that a larger discount on a higher starting price is not always cheaper than a smaller discount on a lower one, so compare the final price you pay.
Tax and extras
Enter a tax rate to see the final amount including tax. Tax is added after the discounts here. For a GST-inclusive price, work out the base price first with the GST calculator. Shipping, fees and cashback are not included.
Frequently asked questions
How do I calculate a percentage discount?
Multiply the price by the discount and divide by 100 to get the saving. Subtract it from the price. A 20% discount on 2,000 saves 400 and leaves 1,600.
Is 20% off plus 10% off the same as 30% off?
No. The second discount applies to the reduced price, so the result is 28% off. The calculator shows the effective discount.
How do I find the original price?
Divide the sale price by one minus the discount as a decimal. A sale price of 1,600 after 20% off means an original price of 1,600 ÷ 0.8 = 2,000.
Is the tax added before or after the discount?
After, in this calculator. If your tax is already in the price, leave the tax rate at 0.
Does it include delivery or cashback?
No. Only the discounts and the tax you enter are included.
How do I find the original price from a sale price?
Divide the sale price by one minus the discount. A sale price of 1,600 after 20% off is 1,600 ÷ 0.8 = 2,000.