Determine your final price and total savings instantly. Support stacked discounts (e.g., clearance + coupon) and add sales tax to get the exact cost of your purchase.
Key Features of Discount Calculator
- Stacked Discount Support Apply a primary sale percentage and a secondary coupon discount sequentially, accurately reflecting how retail stacking works rather than simply adding them together.
- Sales Tax Integration Optionally add a sales tax rate applied to the post-discount subtotal to arrive at the true final out-of-pocket cost.
- Live Savings Breakdown See total dollar savings, primary discount savings, secondary coupon savings, and tax amount displayed separately as you type.
- Privacy-First Calculation All arithmetic runs locally in your browser. No purchase amounts or personal data are sent to any server.
Discount Calculator Examples
Clearance Sale + Coupon
A $79.99 jacket is 30% off in a clearance sale, plus you have a 10% coupon code.
Input
Original Price: $79.99, Discount 1: 30%, Discount 2: 10%Output
Subtotal after 30%: $55.99. After 10% coupon: $50.39. Total savings: $29.60 (37% effective discount).Discounted Item with Sales Tax
A $120 item at 25% off with 8.5% sales tax.
Input
Original Price: $120, Discount: 25%, Tax: 8.5%Output
Discounted price: $90.00. Tax: $7.65. Final price: $97.65.How to Use Discount Calculator
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1. Enter the Original Price
Type the item's original price into the Original Price field.
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2. Set the Discount
Enter the primary discount percentage to see the discounted subtotal and total savings.
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3. Add Stacked Coupon & Tax
Optionally apply a second stacked coupon discount and a sales tax rate to calculate the exact final price.
Common Use Cases for Discount Calculator
- Sale + Coupon Shopping Calculate the exact final price when a retailer's clearance sale is combined with a coupon code — knowing the real savings before checkout.
- Black Friday & Seasonal Sales Quickly compare effective discounts across multiple items or stores to identify the best deal.
- Retail Margin & Pricing Verify the effective discount being offered to a customer after promotional stacking and confirm the final taxable amount.
The Technical Details
Stacked discounts are applied multiplicatively, not additively. A 20% discount followed by a 10% coupon gives a final price of Price × 0.80 × 0.90 = Price × 0.72 — equivalent to a 28% total discount, not 30%. Sales tax is then applied to the final discounted subtotal, matching standard retail practice. All calculations execute client-side with no server involvement.
Frequently Asked Questions
What is a stacked discount?
A stacked discount applies a second percentage reduction on top of the first. For example, a 20% sale then a further 10% coupon gives total savings greater than a flat 30%.
Is sales tax applied before or after the discount?
Tax is applied to the discounted subtotal (after all discounts), which is the standard retail practice in most regions.
Is my data sent to a server?
No. All calculations run locally in your browser. Your data is never uploaded or stored.
Can I calculate a flat-amount discount instead of a percentage?
Currently the tool uses percentage-based discounts. For a flat amount, divide the discount by the original price and enter the result as a percentage.