0.00

You Save $0.00

Total Effective Discount

0% Off

The Math Behind It

Stacked discounts are applied sequentially. A 50% + 20% deal is not 70% off.

Equivalent Single Discount

0% off the original price

Why Most People Calculate Stacked Discounts Wrong

You see the sign everywhere during Black Friday and Cyber Monday: "50% off + an extra 20% off at checkout!" It feels like you're getting 70% off, right? Wrong. This is one of the most common retail psychology tricks, and our Double Discount Calculator is here to expose it.

The "Extra" Discount Trap

The second discount is applied to the already reduced price, not the original price. This means the "extra" 20% is actually worth much less in real dollars than the first 20%.

Real-World Example

Imagine a jacket costs $100.

Step 1: 50% off brings the price to $50. (You saved $50).
Step 2: The "Extra" 20% is taken off the $50, not the $100. 20% of $50 is only $10.
Result: You pay $40. You saved $60 total.

While you saved 60%, you didn't save 70%. On a $1,000 TV, that difference matters a lot. Use the tool above to ensure you know exactly what you are paying.

How to Calculate Double Discount Manually

If you want to do the math yourself, follow this formula for successive discounts:

Final Price = Original Price × (1 - Discount 1) × (1 - Discount 2)

Or, simply bookmark this page and let us handle the math for you instantly.

Frequently Asked Questions

No. 50% off plus 20% off results in a total discount of 60%, not 70%. The second discount applies to the lower price, reducing the total value of the discount.

Multiply the original price by (1 - first discount), then multiply that result by (1 - second discount). For example: $100 × 0.5 × 0.8 = $40.

The formula is:
Net Price = List Price × (1 - d1/100) × (1 - d2/100)

Savings Breakdown