HomeCalcPro — 施工計算レポート
Tool: 割引・セール価格・値引き計算機 — 無料オンライン計算ツール | HomeCalcPro | 印刷日時:
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割引・セール価格・値引き計算機 — 無料オンライン計算ツール | HomeCalcPro
割引・セール価格・値引き計算機の即時・高精度シミュレーションと計算式。
Discount & Retail Price Parameters
Currency
Discount & Final Sale Price Formula
Transparent mathematical methodology explained in plain English.
Final Price = [Original Price × (1 - Discount1) × (1 - Discount2)] × (1 + SalesTax)Applies primary discount and secondary stacked coupon reductions to original price, then calculates optional state sales tax on the discounted subtotal.
Variables Explained:
- Original Price: Full retail sticker price.
- Discount1: Primary sale percentage off.
- Discount2: Optional extra coupon or member discount.
- SalesTax: Local retail sales tax percentage.
Real Project Example
$120 Item with 25% Off + 8.25% Sales Tax
Calculating final checkout price and net dollar savings.
Sample Project Inputs:
Original Price:$120.00
Discount:25%
Sales Tax:8.25%
Step-by-Step Calculation:
- Discount amount: $120.00 × 25% = $30.00.
- Sale subtotal: $120.00 - $30.00 = $90.00.
- Sales tax: $90.00 × 8.25% = $7.43.
- Final price: $90.00 + $7.43 = $97.43.
- Total savings: $30.00.
Calculated Answer:$97.43 final price ($30.00 saved before tax).
Knowledge Base
よくある質問 (FAQ): 割引・セール価格・値引き計算機
Click any question below to expand quick answers, formulas, and expert tips.
How do stacked discounts work (e.g. 20% + extra 10%)?
Stacked discounts are applied sequentially rather than added together. An item with 20% off plus an extra 10% coupon has a total discount of 28% off original price (not 30%).