20% + 30% Off Calculator
20% off + 30% off = 44% total — not 50%. See the math and the exact price for any amount.
$
%
%
Final Price
$56.00
Real % Off
44%
If 0% Simply Added
$50.00
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End-of-Season Sale + Credit Card Discount
A 30% end-of-season sale combined with a 20% credit card discount at a partner retailer: customers expect 50% off. Actual: 44%. On a $400 coat, you'd expect to pay $200 — you pay $224. This is one of the most surprising gaps because 50% feels like a psychological landmark. The real deal is still excellent, but knowing the true price prevents shock at checkout.
Step-by-Step on $100
Formula: Price × (1 − 20/100) × (1 − 30/100)
$100 × 0.80 = $80.00 (after 20% off)
$80.00 × 0.70 = $56.00 (after another 30% off)
Real discount: 44% — not 50%
Quick Reference: 20% + 30% Off
| Original | After 20% off | After 30% more off | You save |
|---|---|---|---|
| $20 | $16 | $11.20 | $8.80 |
| $50 | $40 | $28 | $22 |
| $100 | $80 | $56 | $44 |
| $150 | $120 | $84 | $66 |
| $200 | $160 | $112 | $88 |
| $300 | $240 | $168 | $132 |
| $500 | $400 | $280 | $220 |
| $1000 | $800 | $560 | $440 |
Frequently Asked Questions
No. 20% then 30% gives the same final price as 30% then 20%. Multiplication is commutative: (1−20/100)×(1−30/100) = (1−30/100)×(1−20/100).
The second discount applies to the already-discounted price, not the original. After 20% off, you have 80% of the price left. Taking another 30% off that gives 80% × 0.7 = 56% remaining — so -6% more than if the discounts truly stacked to 50%.
On any purchase, the gap = Price × 20 × 30 / 10,000. For $100: $6.00. For $500: $30.00. The larger the purchase, the more meaningful the difference.
Yes. Multiply a third factor: Price × (1−20/100) × (1−30/100) × (1−D3/100). Three 10% discounts would equal 27.1% total — not 30%.
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