Shopify Discount Calculator
A 20% discount does not mean 20% less profit, it often means 40% to 70% less profit because fees and product costs stay fixed. Enter your regular price, discount percent, and true costs to see discounted price, new margin, profit drop, and how many more units you need to sell to match original earnings.
Instant calculations · Editable fee assumptions · Export-ready results
Inputs
Values update results instantly. Adjust fee assumptions to match your seller dashboard.
Pricing
Price before discount.
Percent off regular price.
Your costs
COGS per unit.
Fulfillment cost you pay.
Per order packaging.
Fees
Shopify Payments percent.
Fixed fee per order.
Results
Live estimates based on your inputs and editable fee assumptions.
Regular price
$39.99
Before discount.
Discounted price
$31.99
Price after discount.
Profit at regular price
$17.04
Net at full price.
Profit after discount
$9.27
Net after discount.
Profit lost to discount
$7.77
Regular minus discounted profit.
New margin
29.0%
Margin after discount.
Orders to match original
2
Units needed at discounted price to equal one full-price profit.
Discount amount
$8.00
Dollars off regular price.
What this means
At 20% off, price falls to $31.99, profit $17.04 → $9.27 (drop $7.77). New margin 29.0% vs 42.6% at full price. Need 2× discounted orders to match 1 full-price profit.
Regular vs discounted profit
Interactive breakdown of fees, costs, and remaining profit.
Distribution
- Regular profit$17.0448.3%
- Discounted profit$9.2726.3%
- Profit given up$7.7722.0%
- Fees at discounted$1.233.5%
Total $35.31 · 4 segments · interactive
Line-item breakdown
Dollar amounts, share of revenue, and visual proportion.
- Regular price
- $39.99
- Discount amount
- $8.00
- Discounted price
- $31.99
- Regular profit
- $17.04
- Discounted profit
- $9.27
- Profit drop
- $7.77
- New margin
- 29.0%
- Volume to match
- 2
Assumptions used
- • Discount 20.0% = $8.00 off
- • Fees at regular $1.46 vs discounted $1.23
- • Fulfillment $21.49 stays constant
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Shopify Discount Calculator
Generated 7/29/2026, 2:50:41 AM · Currency USD
Inputs
- Regular price: 39.99
- Discount percent: 20
- Product cost: 15
- Shipping cost: 4.99
- Packaging cost: 1.5
- Transaction %: 2.9
- Fixed fee: 0.3
Results
- Regular price: $39.99
- Discount amount: $8.00
- Discounted price: $31.99
- Regular profit: $17.04
- Discounted profit: $9.27
- Profit drop: $7.77
- New margin: 29.0%
- Volume to match: 2
Interpretation
At 20% off, price falls to $31.99, profit $17.04 → $9.27 (drop $7.77). New margin 29.0% vs 42.6% at full price. Need 2× discounted orders to match 1 full-price profit.
How it works
Methodology & formulas
This calculator is transparent by design. Review the steps and formulas so you can trust the estimate and adjust assumptions when your dashboard differs.
Calculation steps
- 1Discount amount = regularPrice × discountPercent/100.
- 2Discounted price = regularPrice − discount amount.
- 3Regular fees = regularPrice × txn% + fixed.
- 4Discounted fees = discountedPrice × txn% + fixed.
- 5Total cost regular = product + shipping + packaging + regularFees.
- 6Regular profit = regularPrice − totalCostRegular.
- 7Discounted profit = discountedPrice − product − shipping − packaging − discountedFees.
- 8Profit drop = regularProfit − discountedProfit.
- 9Volume needed = ceil(regularProfit / discountedProfit) when discounted profit > 0, else 0.
Formulas
- DiscountAmount = regular × discount%
- DiscountedPrice = regular − discountAmount
- FeesRegular = regular × txn% + fixed
- FeesDiscounted = discounted × txn% + fixed
- ProfitRegular = regular − costs − feesRegular
- ProfitDiscounted = discounted − costs − feesDiscounted
- VolumeNeeded = regularProfit / discountedProfit
Important assumptions
- Discount is percent off regular price.
- Product, shipping, and packaging costs stay the same after discount.
- Payment fees recalculate on discounted price: fee = discountedPrice × txn% + fixed.
- Only single-unit orders are modeled for clarity; scale quantity if needed.
- Volume to match compares profit per order, not total monthly overhead.
Worked example
$40 with 20% off
Regular $39.99, 20% discount, $15 product, $4.99 shipping, $1.50 packaging, 2.9% + $0.30.
FAQ
Common questions
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