Discount Calculator
This discount calculator instantly computes the sale price and savings when a percentage or fixed discount is applied. Enter the original price and discount to see your final cost, total savings, and price per unit after any applicable taxes.
Calculate Your Discount
Enter the original price and discount percentage to see how much you save.
Frequently Asked Questions
How do you calculate a discount?
To calculate a discount, multiply the original price by the discount percentage and divide by 100. For example, a 20% discount on a $50 item: ($50 x 20) / 100 = $10 discount. The sale price is $50 - $10 = $40. You can also multiply the original price by (1 - discount/100) directly: $50 x 0.80 = $40.
How do you find the sale price after discount?
Sale Price = Original Price x (1 - Discount Percentage / 100). For example, a 30% discount on a $120 item: $120 x (1 - 0.30) = $120 x 0.70 = $84. This formula works for any percentage discount. For a fixed dollar discount, simply subtract: Sale Price = Original Price - Discount Amount.
How do you calculate percentage off?
Percentage Off = ((Original Price - Sale Price) / Original Price) x 100. For example, if an item originally costs $80 and is now $60: ((80 - 60) / 80) x 100 = 25% off. This tells you the discount percentage when you know both the original and sale prices.
How do you calculate discount from original and sale price?
Discount Amount = Original Price - Sale Price. Discount Percentage = ((Original Price - Sale Price) / Original Price) x 100. For example, if an item was $200 and is now $150: Discount = $200 - $150 = $50, and the percentage is ($50 / $200) x 100 = 25% off.
Do multiple discounts stack?
Multiple discounts are applied sequentially, not added together. A 20% discount followed by a 10% discount is NOT the same as a 30% discount. Example: $100 with 20% off = $80, then 10% off $80 = $72. A single 30% discount would give $70. Sequential discounts always result in a higher final price than the combined percentage.
How do you calculate discount with tax?
First apply the discount to get the sale price, then calculate tax on the sale price. For example, a $100 item with 25% discount and 8% tax: Sale price = $100 x 0.75 = $75. Tax = $75 x 0.08 = $6. Final price = $75 + $6 = $81. In most jurisdictions, tax is calculated after the discount is applied.
What is the difference between markup and discount?
Markup increases a price from cost to selling price, while discount decreases a selling price for buyers. Markup Percentage = ((Selling Price - Cost) / Cost) x 100. Discount Percentage = ((Original Price - Sale Price) / Original Price) x 100. A 50% markup on a $40 cost gives a $60 price, but a 50% discount on $60 gives $30, not $40.
How to Calculate Discounts and Sale Prices
What is a Discount Calculator?
A discount calculator is a tool that helps you determine the final price of an item after applying a percentage discount. It calculates how much money you save and what you actually pay. Our calculator also supports stacking multiple discounts and adding sales tax to give you the true final cost.
Whether you're shopping during a sale, comparing deals, or budgeting for purchases, a discount calculator helps you make informed decisions by showing exact savings and final prices.
How to Use This Calculator
- Enter the original price of the item
- Enter the discount percentage or click a quick-select button (10%, 15%, 20%, 25%, 30%, 40%, 50%, 75%)
- Optionally enter a second discount for stacking (e.g., an additional coupon on top of a sale)
- Optionally enter the tax rate to see the final price including tax
- Results update in real time showing your savings and final price
Discount Formulas
Single Discount:
Discount Amount = Original Price x (Discount % / 100)
Final Price = Original Price - Discount Amount
Stacking Discounts:
Price After 1st = Original x (1 - Discount1 / 100)
Final Price = Price After 1st x (1 - Discount2 / 100)
With Tax:
Final Price = Discounted Price x (1 + Tax Rate / 100)
Understanding Stacking Discounts
Stacking discounts means applying multiple discounts sequentially. It's important to understand that stacking discounts is not the same as adding the percentages together.
Important: A 20% discount followed by a 10% discount is NOT the same as a 30% discount. The second discount applies to the already-reduced price, resulting in a total effective discount of 28%.
For example, on a $100 item: 20% off = $80, then 10% off $80 = $72. The total savings is $28 (28%), not $30 (30%).
Examples
Example 1: Simple Discount
A $79.99 jacket is 25% off:
Savings = $79.99 x 0.25 = $20.00 | Final Price = $59.99
Example 2: Stacking Discounts
A $200 item is 30% off, plus an extra 15% coupon:
After 30%: $200 x 0.70 = $140 | After 15%: $140 x 0.85 = $119 | Total Savings: $81 (40.5%)
Example 3: Discount with Tax
A $149.99 item at 20% off with 8.25% tax:
After Discount: $119.99 | Tax: $9.90 | Final: $129.89
Use Cases
- Retail shopping: Calculate savings during sales events like Black Friday, Cyber Monday, or clearance sales
- Coupon stacking: Determine your total savings when combining store discounts with manufacturer coupons
- Price comparison: Compare the effective price between different stores offering different discount levels
- Budget planning: Calculate actual costs before purchasing to stay within budget
- Business pricing: Determine wholesale or bulk pricing after trade discounts
- Negotiation: Quickly calculate counter-offers during price negotiations
Shopping Tips
- Always calculate the final price including tax before purchasing to avoid surprises
- When comparing deals, focus on the final price rather than the discount percentage
- Remember that stacking discounts gives less total savings than adding the percentages together
- Check if a coupon applies before or after the sale discount, as the order can affect your savings
- Use this calculator to determine if a "buy one get one 50% off" is better than a flat 25% discount on both items