Find your real final price after three discounts stack one after another
💡 Why This Matters Three-layer promos — a sale price, plus a coupon code, plus a loyalty discount — sound huge when you add the percentages in your head. They multiply instead, so the real total is always a bit less than it looks.
Three 15% discounts stacked together combine to about 38.6% off — not 45% — because each successive discount shrinks an already-smaller price. The more layers you stack, the bigger that gap between "looks like" and "actually is" grows.
As an Amazon Associate we earn from qualifying purchases.
We do our best to link products that we genuinely believe are organic, no disposable junk, sustainable, and built to last.
Each discount multiplies rather than adds, the same way as a double discount but with one more layer. Convert all three percentages to "keep" factors (1 − discount÷100), multiply all three together, then multiply by the initial price: new price = initial price × (1 − r1) × (1 − r2) × (1 − r3). The order of the three discounts doesn't change the result.
The combined discount is always less than the sum of the three percentages, and the gap widens with each added layer. Three 15% discounts combine to about 38.6% off, not 45% — the third discount is applying to an already twice-reduced price.
This calculator handles exactly three sequential percentage discounts. For just two, use the Double Discount calculator instead. It doesn't account for flat dollar-amount coupons stacked alongside percentage discounts, or sales tax, which is typically applied after all discounts.
Use this before assuming a three-layer promo (sale + coupon + loyalty discount, for example) adds up to the sum of the headline percentages. Compare the real final price here against a single equivalent discount to see which deal actually saves more.
Example: A $100 item gets three 15% discounts, one after another. First: $100 × 0.85 = $85. Second: $85 × 0.85 = $72.25. Third: $72.25 × 0.85 = $61.41. The combined discount is about 38.6%, not 45% — each 15% cut applied to an already-shrunken price.
No — three stacked discounts multiply, not add. Three 15% discounts don't make 45% off; they combine to about 38.6% off, since each discount applies to an already-reduced price.
New price = initial price × (1 − discount 1 ÷ 100) × (1 − discount 2 ÷ 100) × (1 − discount 3 ÷ 100). Multiply all three "keep" factors together, then multiply by the starting price.
No — multiplication doesn't care about order, so applying the discounts in any sequence produces the same final price. Only the three percentages themselves determine the result.