On This Page
- How to use this calculator
- Sale price formula
- Sale price with sales tax
- Sales price per square foot
- Sales price per unit
- Sales price variance
- Sale price in Excel and Google Sheets
- Worked examples
- Frequently asked questions
How to Use This Calculator
Select a calculation mode, enter your numbers, and the result updates instantly. Three modes cover every common scenario: finding a sale price from a discount, recovering the original price when you only know the sale price, or working out what discount percentage was actually applied.
Mode 1: Find sale price
Enter the original price and the discount percentage. The calculator returns the sale price, the amount you save in currency terms, and (if you fill in the optional tax rate field) the total price after sales tax. This is the mode most shoppers reach for first.
Mode 2: Find original price
You know the sale price and the stated discount percentage but want to verify what the item cost before the markdown. Enter both values and the calculator reverses the formula to recover the original price. Useful for checking whether a "was/now" label adds up correctly.
Mode 3: Find discount %
You have the original price and the sale price side by side and want to know what percentage discount that represents. Enter both numbers and the calculator gives you the discount percentage and the savings amount. This is the fastest way to compare deals across different products or stores.
Read the results
The main result card shows the primary answer for your chosen mode. Below it, the result grid breaks out the savings amount, discount percentage, and (in modes 1 and 2) the tax amount and total after tax if you entered a tax rate. The stacked bar in the input panel visualizes the original price split between the sale price portion and the discount portion, so you can see at a glance how large the markdown really is.
Sale Price Formula
The core formula for calculating a sale price is: Sale Price = Original Price × (1 − Discount% ÷ 100). It works in two steps: first convert the percentage to a multiplier, then apply it to the original price. A 30% discount becomes a multiplier of 0.70, meaning you keep 70% of the original price.
Find sale price from original price and discount
Example: original price $100, 30% off. Sale Price = $100 × (1 − 0.30) = $100 × 0.70 = $70. You can also calculate it as: Discount Amount = $100 × 0.30 = $30, then Sale Price = $100 − $30 = $70. Both paths give the same answer.
Find original price from sale price
Rearranging the formula: if a jacket is on sale for $63 after a 30% discount, the original price was $63 ÷ 0.70 = $90. This reverse calculation is useful when a retailer lists the sale price but not the original price, and you want to judge whether the discount is genuine.
Find discount percentage
If a phone was $500 and is now $380, the discount is ($500 − $380) ÷ $500 × 100 = $120 ÷ $500 × 100 = 24%. This is identical to the percentage decrease formula: any discount is simply a percentage decrease applied to the original price.
Sale Price with Sales Tax
Discounts and sales tax operate at different stages of a transaction. The discount reduces the original price first; then sales tax is applied to the reduced sale price, not the original price. Getting this order right matters because applying tax before the discount overstates what you owe.
Example: original price $200, 25% discount, 8% sales tax. Step 1: Sale price = $200 × 0.75 = $150. Step 2: Tax amount = $150 × 0.08 = $12. Step 3: Total = $150 + $12 = $162. If you mistakenly applied the 8% tax to the $200 original price before the discount, you would pay $16 tax instead of $12, a $4 error on a single item.
This "discount first, then tax" sequence is the standard used in US retail. Canadian GST/HST and UK VAT follow the same logic. For working backward from a total that already includes tax, use the Reverse Sales Tax Calculator to strip out the tax component before applying the discount formula.
Sale price calculator with sales tax by US state
US sales tax rates vary by state and sometimes by county or city. Common state rates: California 7.25% (base), New York 4% (base), Texas 6.25%, Florida 6%, Washington 6.5%. Most jurisdictions layer county and city rates on top of the state base rate. Always verify the combined rate that applies to your specific purchase location, since the base rate alone can understate the actual tax.
Sales Price per Square Foot
Home sale price per square foot is one of the most used benchmarks in real estate. It lets buyers and agents compare properties of different sizes on an equal basis. A house sale price calculator that outputs a per-square-foot figure gives you an immediate sense of whether a listing is priced in line with the market.
Example: a house sells for $420,000 and has 1,750 sq ft of living space. Price per sq ft = $420,000 ÷ 1,750 = $240 per sq ft. If comparable homes in the same neighborhood recently sold at $220–$250 per sq ft, this listing falls within the normal range.
How to use price per square foot for negotiation
Run the calculation on recent sold listings in the same area, not on asking prices. Asking prices reflect seller expectations; closed sales prices reflect what buyers actually paid. When the listing you are evaluating comes in above the closed-sales average, that gap is your starting point for negotiation. A difference of $15–$20 per sq ft on a 2,000 sq ft home represents $30,000–$40,000 in negotiating room.
Adjusting for quality and features
Price per square foot is a rough benchmark, not a precise valuation. Updated kitchens, extra bathrooms, finished basements, and lot size all affect what a property is worth beyond raw square footage. Use the metric to screen listings quickly, then look more carefully at the specifics of any home that appears significantly above or below the market average.
Sales Price per Unit
Retailers, wholesalers, and manufacturers routinely need to calculate the sales price per unit when a discount is applied to a bulk order or a multi-pack. The per-unit sale price tells you whether volume pricing still covers your cost and target margin.
Example: a retailer buys 500 units at a list price of $12 per unit and negotiates a 15% trade discount. Sale price per unit = $12 × (1 − 0.15) = $12 × 0.85 = $10.20 per unit. Total order value = $10.20 × 500 = $5,100.
If the retailer then marks the units up for their own customers, the per-unit sale price they paid becomes their cost of goods. From there, they apply their own margin to set a customer-facing price. See the Markup Calculator for the markup-on-cost calculation and the Profit Margin Calculator for the equivalent margin-on-revenue version.
Sales price per unit in manufacturing
In a production context, sales price per unit is the price at which the manufacturer sells to a distributor or retailer. It is distinct from the consumer retail price (which includes the retailer's own markup). Manufacturers set the per-unit sales price to cover variable costs, fixed overhead allocation, and a target contribution margin. When a volume discount is offered, every percentage point of discount directly reduces the contribution margin, so pricing teams track minimum viable per-unit sales prices very carefully.
Sales Price Variance
Sales price variance measures the difference between the actual selling price achieved and the standard (budgeted) selling price. It is a management accounting metric, not a shopper tool, but understanding it explains why businesses track sale prices so carefully even during promotions.
Example: a retailer budgeted a selling price of $50 per item and actually sold 800 units at $44 (after running a 12% discount promotion). Sales price variance = ($44 − $50) × 800 = −$6 × 800 = −$4,800. The negative sign means the business collected $4,800 less revenue than planned, purely because of the lower selling price.
Favorable vs unfavorable variance
A positive sales price variance means the actual price exceeded the standard, which is favorable. A negative variance means price was below standard, which is unfavorable. But unfavorable price variance combined with a much higher-than-expected sales volume can still result in better overall revenue than plan. That is why sales price variance is always reviewed alongside sales volume variance, which captures the unit volume effect separately.
Sale Price in Excel and Google Sheets
Both Excel and Google Sheets use identical formula syntax. Assume the original price is in column B and the discount percentage is in column C, starting at row 2.
- Discount amount:
=B2*C2/100 - Sale price:
=B2*(1-C2/100) - Original price from sale price (D2) and discount (C2):
=D2/(1-C2/100) - Discount % from original (B2) and sale price (D2):
=(B2-D2)/B2*100 - Sale price after tax (tax rate in E2):
=B2*(1-C2/100)*(1+E2/100)
To apply to a range, anchor the discount percentage with a dollar sign if it is in a single cell used by multiple rows: =B2*(1-$C$1/100). To format results as currency, select the cells and press Ctrl+1 (or Cmd+1 on Mac), choose Currency, and set the decimal places to 2. For calculating sale price in Excel with a percentage cell already formatted as a percentage (0.30 stored internally instead of 30), drop the /100 from the formula: =B2*(1-C2).
Worked Examples
Example 1: Clothing Store Sale
A jacket has an original price of $180. The store is running a 35% off sale. How much does the jacket cost, and how much does the buyer save?
Discount amount = $180 × 35 ÷ 100 = $63. Sale price = $180 − $63 = $117. If the local sales tax is 9%, the after-tax total = $117 × 1.09 = $127.53. The shopper saves $63 on the item before tax, and the total out-of-pocket cost is $127.53.
Example 2: Car Sale Price
A used car is listed at a sale price of $14,500. The seller says this reflects a 20% discount from the original asking price. What was the original price?
Using the reverse formula: Original price = $14,500 ÷ (1 − 0.20) = $14,500 ÷ 0.80 = $18,125. The discount amount was $18,125 − $14,500 = $3,625. A car sale price calculator is particularly useful here because dealers sometimes inflate the original price before applying a stated discount; checking the math independently helps buyers negotiate from a position of knowledge.
Example 3: Real Estate Per Square Foot
A house in a suburban market is listed at $385,000. It has 1,650 sq ft of finished living space. Comparable closed sales in the same ZIP code over the past 90 days averaged $215 per sq ft. Is this listing priced fairly?
Listing price per sq ft = $385,000 ÷ 1,650 = $233.33 per sq ft. That is $18.33 per sq ft above the comparable average. On 1,650 sq ft, that premium equals $18.33 × 1,650 = $30,245. A buyer could reasonably use this gap as the basis for an offer closer to $355,000–$365,000, depending on the home's condition and features relative to the comps.
Example 4: Bulk Order Discount
A wholesaler quotes a unit list price of $8.50 for a product. A retailer orders 1,000 units and negotiates a 12% volume discount. What is the sales price per unit, and what is the total order value?
Sale price per unit = $8.50 × (1 − 0.12) = $8.50 × 0.88 = $7.48 per unit. Total order value = $7.48 × 1,000 = $7,480. The retailer saved $1,020 off the list price. To check whether the deal still works for the retailer, they would use the Product Pricing Calculator to verify that their own planned selling price generates an acceptable margin after buying at $7.48.
Example 5: Finding the Discount Percentage
A laptop shows a crossed-out price of $1,199 and a sale price of $899. What discount percentage does this represent?
Savings = $1,199 − $899 = $300. Discount % = ($300 ÷ $1,199) × 100 = 25.02%. The retailer is rounding this to "25% off" in the marketing, which is accurate to the nearest whole percent. Knowing the precise number helps when comparing this deal against a competitor offering "$280 off" a laptop with a $1,050 original price: $280 ÷ $1,050 × 100 = 26.67%, so the competitor's deal is fractionally better despite the lower absolute saving.
Frequently Asked Questions
How do you calculate sale price?
Multiply the original price by one minus the discount percentage expressed as a decimal: Sale Price = Original Price × (1 − Discount% ÷ 100). For a $120 item at 25% off: $120 × (1 − 0.25) = $120 × 0.75 = $90. Alternatively, find the discount amount first ($120 × 0.25 = $30) and subtract it ($120 − $30 = $90). Both methods give the same answer.
How do you calculate the original price from a sale price?
Divide the sale price by one minus the discount percentage expressed as a decimal: Original Price = Sale Price ÷ (1 − Discount% ÷ 100). If an item costs $65 after a 35% discount, the original price was $65 ÷ 0.65 = $100. This reverse calculation works because you are undoing the multiplication that created the sale price.
How do you calculate the discount percentage?
Subtract the sale price from the original price to get the savings amount, then divide by the original price and multiply by 100: Discount % = (Original Price − Sale Price) ÷ Original Price × 100. For an item that was $80 and is now $60: ($80 − $60) ÷ $80 × 100 = $20 ÷ $80 × 100 = 25%.
How do you calculate sale price with sales tax?
Apply the discount first, then apply the tax to the reduced sale price. Sale Price after Discount = Original Price × (1 − Discount% ÷ 100). Total with Tax = Sale Price after Discount × (1 + Tax% ÷ 100). On a $200 item at 20% off with 10% tax: sale price = $160; total with tax = $160 × 1.10 = $176. Never apply tax to the original pre-discount price for a standard retail transaction.
How do you calculate sales price per square foot for a home?
Divide the home's sale price by its finished square footage: Price per Sq Ft = Sale Price ÷ Square Footage. A home that sells for $340,000 with 1,600 sq ft has a price of $340,000 ÷ 1,600 = $212.50 per sq ft. Compare this against recent closed sales of similar homes in the same area (not asking prices) to assess whether the listing is in line with the local market.
How do you calculate sales price per unit?
Apply the discount to the per-unit list price: Sale Price per Unit = List Price per Unit × (1 − Discount% ÷ 100). For a product with a $15 list price and a 10% trade discount: $15 × 0.90 = $13.50 per unit. Multiply by quantity for the total order value: $13.50 × 200 units = $2,700.
How do you calculate sales price variance?
Subtract the standard (budgeted) price from the actual price, then multiply by actual units sold: Sales Price Variance = (Actual Price − Standard Price) × Actual Units Sold. If the standard price was $40 and the actual selling price was $36 due to a promotion, and 500 units were sold: ($36 − $40) × 500 = −$2,000. The negative result means revenue was $2,000 below budget from the price effect alone.
How do you calculate sale price of a business?
Business sale price is more involved than a simple discount calculation. Common methods include the EBITDA multiple (Enterprise Value = EBITDA × industry multiple), asset-based valuation, and discounted cash flow. A rough starting point for small businesses is 2–4 times annual net profit. For a more detailed breakdown of net profit before and after tax, the Net Profit Calculator provides the components that buyers and sellers use in valuation discussions.
What is the difference between sale price and selling price?
In everyday retail, "sale price" usually means the discounted price during a promotion, while "selling price" is the general term for any price at which a product is actually sold (discounted or not). In accounting and commerce math, both terms can mean the same thing: the price received from a buyer. This calculator uses "sale price" to mean the price after a discount has been applied to an original or list price.
How do you calculate percent off from a sale price?
You need both the original price and the sale price. Percent off = (Original Price − Sale Price) ÷ Original Price × 100. If you only have the sale price and the percent off figure, you can recover the original price first using Original Price = Sale Price ÷ (1 − Percent Off ÷ 100), then run the standard discount percent formula on both figures to verify.
How do you calculate average sale price?
Average sale price (ASP) is total revenue divided by number of units sold: ASP = Total Revenue ÷ Units Sold. For a product line that generated $45,000 in revenue from 300 units: ASP = $45,000 ÷ 300 = $150. ASP is commonly tracked over time to measure pricing trends: if ASP falls despite stable unit volumes, it signals that discounting or product mix shift is eroding revenue per sale. See the Gross Profit Calculator for how changes in ASP flow through to gross margin.
References
- Investopedia: Sales Price Variance: Definition, formula, and interpretation of favorable and unfavorable sales price variance in management accounting.
- Consumer Reports: How to Spot a Fake Sale: Guidance on verifying whether a sale price reflects a genuine discount from a real original price.
- National Association of Realtors: Research and Statistics: Median sales price per square foot data and methodology for residential real estate market analysis.