10% + 10% Off Calculator
10% off + 10% off = 19% total — not 20%. See the math and the exact price for any amount.
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%
%
Final Price
$81.00
Real % Off
19%
If 0% Simply Added
$80.00
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Employee Discount + Loyalty Reward
Employee discounts and loyalty rewards are the most common source of double-10 stacking. A retail worker gets 10% staff discount and holds the store's reward card for another 10% off. The register shows 19% off — not 20%. On a $200 jacket, that's $2 less than expected. Multiply this across a year of shopping and the gap becomes real money.
Step-by-Step on $100
Formula: Price × (1 − 10/100) × (1 − 10/100)
$100 × 0.90 = $90.00 (after 10% off)
$90.00 × 0.90 = $81.00 (after another 10% off)
Real discount: 19% — not 20%
Quick Reference: 10% + 10% Off
| Original | After 10% off | After 10% more off | You save |
|---|---|---|---|
| $20 | $18 | $16.20 | $3.80 |
| $50 | $45 | $40.50 | $9.50 |
| $100 | $90 | $81 | $19 |
| $150 | $135 | $121.50 | $28.50 |
| $200 | $180 | $162 | $38 |
| $300 | $270 | $243 | $57 |
| $500 | $450 | $405 | $95 |
| $1000 | $900 | $810 | $190 |
Frequently Asked Questions
No. 10% then 10% gives the same final price as 10% then 10%. Multiplication is commutative: (1−10/100)×(1−10/100) = (1−10/100)×(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 10% off that gives 90% × 0.9 = 81% remaining — so -61% more than if the discounts truly stacked to 20%.
On any purchase, the gap = Price × 10 × 10 / 10,000. For $100: $1.00. For $500: $5.00. The larger the purchase, the more meaningful the difference.
Yes. Multiply a third factor: Price × (1−10/100) × (1−10/100) × (1−D3/100). Three 10% discounts would equal 27.1% total — not 30%.
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