15% + 20% Off Calculator
15% off + 20% off = 32% total — not 35%. See the math and the exact price for any amount.
$
%
%
Final Price
$68.00
Real % Off
32%
If 0% Simply Added
$65.00
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Member-Only Sale + Bonus Coupon
A store runs a 20% member-only sale and sends a bonus 15% coupon by email. Shoppers assume 35% total. The real discount is 32%. On a $250 shoes purchase, you'd expect to pay $162.50 — the actual price is $170. This 2.5% gap between expected and real is why reading checkout totals carefully matters.
Step-by-Step on $100
Formula: Price × (1 − 15/100) × (1 − 20/100)
$100 × 0.85 = $85.00 (after 15% off)
$85.00 × 0.80 = $68.00 (after another 20% off)
Real discount: 32% — not 35%
Quick Reference: 15% + 20% Off
| Original | After 15% off | After 20% more off | You save |
|---|---|---|---|
| $20 | $17 | $13.60 | $6.40 |
| $50 | $42.50 | $34 | $16 |
| $100 | $85 | $68 | $32 |
| $150 | $127.50 | $102 | $48 |
| $200 | $170 | $136 | $64 |
| $300 | $255 | $204 | $96 |
| $500 | $425 | $340 | $160 |
| $1000 | $850 | $680 | $320 |
Frequently Asked Questions
No. 15% then 20% gives the same final price as 20% then 15%. Multiplication is commutative: (1−15/100)×(1−20/100) = (1−20/100)×(1−15/100).
The second discount applies to the already-discounted price, not the original. After 15% off, you have 85% of the price left. Taking another 20% off that gives 85% × 0.8 = 68% remaining — so -33% more than if the discounts truly stacked to 35%.
On any purchase, the gap = Price × 15 × 20 / 10,000. For $100: $3.00. For $500: $15.00. The larger the purchase, the more meaningful the difference.
Yes. Multiply a third factor: Price × (1−15/100) × (1−20/100) × (1−D3/100). Three 10% discounts would equal 27.1% total — not 30%.
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