10% + 15% Off Calculator
10% off + 15% off = 23.5% total — not 25%. See the math and the exact price for any amount.
$
%
%
Final Price
$76.50
Real % Off
23.5%
If 0% Simply Added
$75.00
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Store Sale + Loyalty Card
A 15% store anniversary sale plus a 10% loyalty cardholder discount: shoppers assume 25% total. Reality is 23.5%. On a $150 purchase, you expect to pay $112.50 — you actually pay $114.75. Knowing the real number means you can budget correctly rather than being surprised at checkout.
Step-by-Step on $100
Formula: Price × (1 − 10/100) × (1 − 15/100)
$100 × 0.90 = $90.00 (after 10% off)
$90.00 × 0.85 = $76.50 (after another 15% off)
Real discount: 23.5% — not 25%
Quick Reference: 10% + 15% Off
| Original | After 10% off | After 15% more off | You save |
|---|---|---|---|
| $20 | $18 | $15.30 | $4.70 |
| $50 | $45 | $38.25 | $11.75 |
| $100 | $90 | $76.50 | $23.50 |
| $150 | $135 | $114.75 | $35.25 |
| $200 | $180 | $153 | $47 |
| $300 | $270 | $229.50 | $70.50 |
| $500 | $450 | $382.50 | $117.50 |
| $1000 | $900 | $765 | $235 |
Frequently Asked Questions
No. 10% then 15% gives the same final price as 15% then 10%. Multiplication is commutative: (1−10/100)×(1−15/100) = (1−15/100)×(1−10/100).
The second discount applies to the already-discounted price, not the original. After 10% off, you have 90% of the price left. Taking another 15% off that gives 90% × 0.85 = 76.5% remaining — so -51.5% more than if the discounts truly stacked to 25%.
On any purchase, the gap = Price × 10 × 15 / 10,000. For $100: $1.50. For $500: $7.50. The larger the purchase, the more meaningful the difference.
Yes. Multiply a third factor: Price × (1−10/100) × (1−15/100) × (1−D3/100). Three 10% discounts would equal 27.1% total — not 30%.
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