Find the original price before a discount was applied. Reverse-calculate the list price from a sale price and known discount percentage.
You see a sale price and know the discount percentage, but what was the original price? This reverse-discount calculation comes up constantly in retail analysis, accounting reconciliations, competitor research, and personal shopping. If a product is labeled "$59.99 after 25% off," the original price isn't $59.99 + 25% — that's a common mistake.
Our Original Price Before Discount Calculator uses the correct reverse formula to recover the true list price. Enter the sale price and discount percentage, and instantly see the original price, the dollar amount of the discount, and a verification check. The tool also handles multiple scenarios: enter several sale prices to batch-calculate originals for an entire product line.
This calculator is essential for buyers verifying advertised discounts, accountants reconciling promotional pricing, and pricing analysts reverse-engineering competitor strategies.
Entrepreneurs, finance teams, and small-business owners gain a competitive edge from accurate original price before discount data when setting prices, forecasting revenue, or managing operational costs. Save this tool and revisit it each quarter to keep your financial plans aligned with current market realities.
Adding the discount percentage back to the sale price is a common error. If an item is 25% off at $75, the original is $100, not $93.75 (which is $75 + 25%). The correct formula divides the sale price by (1 − discount rate). This calculator ensures accuracy and helps verify that advertised discounts match the actual price reduction.
Original Price = Sale Price ÷ (1 − Discount% ÷ 100) Discount Amount = Original Price − Sale Price Verification: Original Price × (1 − Discount% ÷ 100) = Sale Price
Result: Original: $79.99
Original = $59.99 ÷ (1 − 0.25) = $59.99 ÷ 0.75 = $79.99. The discount amount was $79.99 − $59.99 = $20.00. Verify: $79.99 × 0.75 = $59.99 ✔. Note: simply adding 25% to $59.99 would give $74.99 — an incorrect answer.
The most frequent error is "adding back" the discount. If you see "$60 after 20% off" and calculate $60 + 20% = $72, you're wrong. The original is $75 ($60 ÷ 0.80). The 20% was taken from $75, not from $60. This asymmetry is fundamental: percentages applied to different bases yield different amounts. Always divide by the complement.
Retailers sometimes inflate "original" prices to make discounts appear larger. If a shirt is "$39.99 (was $80, 50% off)" but the math says $39.99 ÷ 0.50 = $79.98, it checks out. If the "was" price is higher than the calculated original, the advertised discount is understated — you're getting a better deal than claimed. If lower, the discount is overstated.
Accountants frequently need to reverse promotional pricing to report gross revenue. When sales records show net prices after trade discounts, applying this formula reconstructs the catalog price. This is essential for revenue recognition under accounting standards that require gross transaction reporting.
Because the discount was subtracted from a larger number (the original), not added to a smaller number (the sale price). 25% of $100 is $25, giving a $75 sale price. But 25% of $75 is $18.75, so $75 + $18.75 = $93.75 — which is wrong. The correct method divides: $75 ÷ 0.75 = $100.
A 100% discount means the item is free, so the sale price should be $0. You cannot reverse-calculate from a $0 sale price because dividing by zero is undefined. If the sale price is $0, any original price is possible.
Undo each discount in reverse order. If 20% off was applied first, then 10% off: start with the final price, divide by (1 − 0.10) to undo the second discount, then divide by (1 − 0.20) to undo the first. Example: $72 ÷ 0.90 = $80, then $80 ÷ 0.80 = $100 original.
For markups, the formula is different: Original = Marked-up Price ÷ (1 + Markup%). The sign flips because markup adds to cost, while discount subtracts from the list price.
Not necessarily. While many retailers set round original prices, the math may yield non-round results due to the specific discount percentage. The calculator shows the mathematically exact original, which you can round as appropriate.
Yes. Trade discounts work the same way. If a supplier offers a 15% trade discount and you paid $425, the list price was $425 ÷ 0.85 = $500. This is common in wholesale and distribution channels.