PriceDrop

Discount Calculator

Original price, discount percentage — see the sale price and how much you save, including stacked discounts.

Original price

Discount %

Extra stacked %

Final price

$90.00

You save: $30.00
Effective discount: 25%
After first discount: $90.00

What you entered

Original price: $120Discount: 25%Stacked discount: 0%

1
After first discount
$120 × (1 − 25/100)= $90
2
After stacked discount
$90 × (1 − 0/100)= $90
3
Total savings
$120 − $90= $30
4
Effective discount rate
$30 ÷ $120 × 100= 25.00%

Result

Final price: $90.00

After both discounts, $120 becomes $90.00 — an effective 25% off, not simply 25% (stacked discounts compound rather than add).

Sale price and real savings on common single and stacked discounts

Each row applies the first discount to the original price, then applies any second coupon to the already reduced price, exactly as a checkout does. The effective discount column is the total saving measured against the original price.

Original price	Discounts applied	Final price	You save	Effective discount
$50	10% off	$45.00	$5.00	10.00%
$60	20% off, then 20% off	$38.40	$21.60	36.00%
$75	70% off	$22.50	$52.50	70.00%
$80	40% off	$48.00	$32.00	40.00%
$120	25% off	$90.00	$30.00	25.00%
$150	50% off, then 10% off	$67.50	$82.50	55.00%
$200	30% off	$140.00	$60.00	30.00%
$200	30% off, then 15% off	$119.00	$81.00	40.50%
$200	30% off, then 20% off	$112.00	$88.00	44.00%
$1,200	15% off, then 5% off	$969.00	$231.00	19.25%

Stacked discounts multiply rather than add, so 30% off followed by 20% off is 44% off in total, not 50%. The gap widens as the individual discounts get bigger. Percentage columns follow the ratio only, so 25% off $120 and 25% off $1,200 both save exactly a quarter. These figures are before sales tax, shipping and any minimum-spend condition attached to the coupon, and the order the two codes are applied in does not change the final price.

Stacked discounts ≠ added discounts

30% off, then an extra 20% off, is NOT 50% off. It's 30% off, then 20% off the reduced price = 44% off total.

Frequently asked questions

A $200 jacket is 30% off, plus an extra 15% with a coupon — what's the final price?

First discount: $200 × 0.70 = $140. Second discount on the reduced price: $140 × 0.85 = $119. Total effective discount: ($200 − $119) / $200 = 40.5%, not 45%. Stacked discounts always give less than the sum of the individual percentages.

What's a better deal: 25% off or $50 off a $180 item?

25% off $180 = $45 savings (final price $135). $50 off = $50 savings (final price $130). The flat $50 is better here. But for a $250 item, 25% off = $62.50 savings, beating the $50. The breakpoint is $200 — above that, percentage wins.

How do I calculate the original price from a sale price and discount percentage?

Original = sale price / (1 − discount/100). If something is $75 after 25% off: $75 / 0.75 = $100 original price. Don't add the percentage to the sale price — that gives $93.75, which is wrong.