Double Discount Calculator

Updated on 06-Aug-2025

Calculate the final price after applying two successive discounts with our Double Discount Calculator. Enter the original price and two discount percentages to get the final cost, savings, and breakdown instantly.

$
%
%

Discount Breakdown

After First Discount

$80.00

After Second Discount

$72.00

Total Discount Amount

$28.00

Final Price

$72.00

How Double Discounts Work

• Second discount applies to already discounted price (not original price)
• Formula: Final Price = Original × (1 - First%) × (1 - Second%)
• $100 with 20% then 10% → $100 × 0.8 × 0.9 = $72
• Total discount ≠ sum of percentages (20% + 10% ≠ 28%)

When shopping, it's common to see stores offering not just one, but two discounts—like "20% off, plus an extra 10% off." These are called successive or double discounts, and they don’t simply add together. To avoid confusion and calculate your savings accurately, a Double Discount Calculator is the perfect tool.

This guide will help you understand how double discounts work and show you the exact formulas used in our calculator with easy-to-follow examples.

What Is a Double Discount?

A double discount means applying one discount after another—not together. For example, a product costing $100 with 20% + 10% off will not cost $70. The second discount is applied on the already reduced price, not on the original price.

Formulas Used

Price After First Discount:

To apply the first discount:

PriceAfterFirstDiscount=OriginalPrice×(1-FirstDiscount100)\text{PriceAfterFirstDiscount} = \text{OriginalPrice} \times \left(1 - \frac{\text{FirstDiscount}}{100} \right)

Price After Second Discount:

Apply the second discount on the new price:

PriceAfterSecondDiscount=PriceAfterFirstDiscount×(1-SecondDiscount100)\text{PriceAfterSecondDiscount} = \text{PriceAfterFirstDiscount} \times \left(1 - \frac{\text{SecondDiscount}}{100} \right)

Total Discount Amount:

This is the total savings from both discounts:

TotalDiscountAmount=OriginalPrice-PriceAfterSecondDiscount\text{TotalDiscountAmount} = \text{OriginalPrice} - \text{PriceAfterSecondDiscount}

Final Price (After Both Discounts):

The final price is simply the price after both discounts:

Final Price=Price After Second Discount\text{Final Price} = \text{Price After Second Discount}

Example:

Let’s say:

  • Original Price = $200
  • First Discount = 20%
  • Second Discount = 10%

Step 1: Price After First Discount

PriceAfterFirstDiscount=200×(1-20100)=200×0.80=160\text{PriceAfterFirstDiscount} = 200 \times \left(1 - \frac{20}{100} \right) = 200 \times 0.80 = 160

Step 2: Price After Second Discount

PriceAfterSecondDiscount=160×(1-10100)=160×0.90=144\text{PriceAfterSecondDiscount} = 160 \times \left(1 - \frac{10}{100} \right) = 160 \times 0.90 = 144

Step 3: Total Discount Amount

TotalDiscountAmount=200-144=56\text{TotalDiscountAmount} = 200 - 144 = 56

Final Result:

  • Price After First Discount: $160
  • Price After Second Discount / Final Price: $144
  • Total Discount Amount: $56

Why Use a Double Discount Calculator?

Double discounts can be tricky, and doing them manually may lead to errors. This calculator helps:

  • Avoid overestimating savings
  • See each discount's effect clearly
  • Make better shopping decisions
Double Discount Calculator

Related Calculators