Discount Calculator
Discount Calculator
Find final sale prices and total savings instantly
Quick answer
A discount calculator finds the sale price with Sale price = Original price × (1 − Discount ÷ 100). For example, 20% off 2,000 is a 400 saving, so you pay 1,600. With an extra 10% off the sale price and 5% sales tax, the final price is 1,512 and your total saving is 560.
Our free discount calculator shows exactly how much you save and what you will pay at the till. Enter the original price and the discount percentage, add an optional extra coupon discount and sales tax, and the calculator gives you the total saving, the discount amount, the tax and the final price in one click.
Use this discount calculator for online sales, Black Friday and Eid deals, clearance offers, coupon codes stacked on a sale, or to check that a shop has applied the right price. It works with any currency and nothing you type is stored.
What Is a Discount?
A discount is a reduction from the original or list price, usually written as a percentage such as 25% off. The amount you save is the discount percentage of the original price, and the price you pay is the original price minus that saving. Read more about common discounts and allowances used in retail.
Discount amount = Original price × Discount% ÷ 100
Sale price = Original price − Discount amount
Final price = Sale price × (1 + Tax% ÷ 100)
How to Use the Discount Calculator
Follow these five quick steps:
Step 1: Enter the Original Price
Type the full price shown on the tag or product page in the Original Price box, for example 2000.
Step 2: Enter the Discount and Any Extra Discount
Enter the main discount in the Discount (%) box, for example 20. If you also have a coupon or an "extra 10% off" offer, add it in the Extra Discount (%) box. The discount calculator applies the extra discount to the already reduced price, just like real shops do.
Step 3: Add Sales Tax (Optional)
If tax is added at checkout, enter the rate in Sales Tax (%), for example 5. Leave it empty if the price already includes tax.
Step 4: Click Calculate Total Savings
Press Calculate Total Savings. The discount calculator works out every stage of the price instantly.
Step 5: Read Your Savings and Final Price
The results show You Save (Total), the Original Price, the Total Discount, the Sales Tax Added and the Final Price (To Pay).
Discount Formula Explained With an Example
- Main discount: 20% of 2,000 = 400, so the sale price is 2,000 − 400 = 1,600.
- Extra discount: 10% of 1,600 = 160, so the price drops to 1,440.
- Total saving: 400 + 160 = 560 (28% of the original price, not 30%).
- Sales tax: 5% of 1,440 = 72.
- Final price: 1,440 + 72 = 1,512.
Why 20% + 10% Is Not 30% Off
Stacked discounts are applied one after another, so the second discount is taken from a smaller price. A 20% discount followed by an extra 10% gives a combined discount of 1 − (0.80 × 0.90) = 28%, not 30%. A good discount calculator handles this automatically, so you always see the true saving.
Discount Calculator Examples
| Original price | Discount | Extra discount | You save | You pay (before tax) |
|---|---|---|---|---|
| 1,000 | 10% | – | 100 | 900 |
| 2,500 | 25% | – | 625 | 1,875 |
| 2,000 | 20% | 10% | 560 | 1,440 |
| 4,999 | 50% | – | 2,499.50 | 2,499.50 |
| 12,000 | 30% | 5% | 4,020 | 7,980 |
How to Find the Discount Percentage
If you know the original and sale prices but not the percent, use: Discount% = (Original − Sale) ÷ Original × 100. For example, a shirt reduced from 1,500 to 1,200 has a discount of 300 ÷ 1,500 × 100 = 20%. You can also use our Percentage Calculator for this.
Smart Shopping Tips
- Compare the final price: a bigger percentage on a higher list price can still cost more.
- Check stacking rules: some coupons apply to the original price, not the sale price.
- Include tax and delivery: add the tax rate in the discount calculator and remember shipping fees.
- Watch "up to" offers: "up to 70% off" often applies to only a few items.
Who Uses a Discount Calculator?
Shoppers use a discount calculator to compare deals before they buy. Shop owners and online sellers use a discount calculator to set sale prices, plan promotions and make sure a markdown still leaves a profit. Students also use a discount calculator to check percentage word problems in maths class.
Frequently Asked Questions
How do I calculate a discount?
Multiply the original price by the discount percentage and divide by 100 to get the saving, then subtract it from the original price. For 20% off 2,000, the saving is 400 and the sale price is 1,600.
How do I calculate 20% off a price?
Multiply the price by 0.80. For example, 20% off 750 is 750 × 0.80 = 600.
Is 20% plus 10% off the same as 30% off?
No. The extra 10% is taken from the already reduced price, so the combined discount is 28%. On 2,000 you save 560, not 600.
Should tax be added before or after the discount?
In most places sales tax is charged on the discounted price, which is how this discount calculator works. Check local rules if a coupon is treated differently.
How do I find the original price from the sale price?
Divide the sale price by (1 − discount ÷ 100). If an item costs 1,600 after 20% off, the original price was 1,600 ÷ 0.80 = 2,000.
Is the discount calculator free?
Yes. It is free, needs no sign-up and works on phones, tablets and computers.