Markdown Calculator

What does this markdown calculator estimate?

This calculator estimates the price reduction between an original selling price and an actual selling price. It reports the dollar markdown, the markdown percentage used by this model, the reduction as a share of the original price, and the portion of the original price that the customer still pays. Optional inventory inputs extend the same per-item calculation to total revenue, total customer savings, and gross profit.

Retail teams use markdown analysis when clearing seasonal stock, moving slow-selling products, testing new price points, or planning an end-of-line promotion. The calculator does not predict demand. It isolates the arithmetic of the price change so you can compare scenarios consistently.

How should each input be used?

Original selling price is the price before the markdown. Enter a nonnegative U.S. dollar amount. A higher original price increases the possible dollar markdown for any unchanged markdown rate. Common mistakes include entering a wholesale cost instead of the customer-facing price or mixing tax-inclusive and tax-exclusive prices.

Known markdown value tells the calculator which second variable you already have. Choose actual selling price when the new shelf price is known, markdown amount when the dollar reduction is known, or markdown percent when the rate is known. Switching this selector converts the active scenario, preserving the calculated economics rather than merely changing the label.

Markdown percent follows the convention markdown amount divided by actual selling price. For example, an original price of $50 and an actual price of $40 creates a $10 markdown and a 25% markdown rate because $10 divided by $40 equals 25%. This differs from the more familiar percentage reduction from the original price, which would be 20% in the same example.

Units expected to sell is optional and should be a whole number. It scales per-item revenue and savings into total values. Increasing quantity does not change the per-item markdown; it increases the total revenue difference proportionally. Unit cost is also optional. It estimates gross profit before and after the markdown. A cost above the actual selling price produces a negative gross profit, which is a valid warning signal rather than a calculation error.

How are the results calculated?

Markdown amount = Original selling price − Actual selling price

Markdown percent = Markdown amount ÷ Actual selling price × 100

Actual selling price from a markdown percent = Original price ÷ (1 + Markdown percent)

The primary result is the actual selling price. The markdown amount is the customer’s dollar saving per item. The markdown percentage expresses that saving relative to the actual selling price. The reduction versus original price uses the original price as the denominator, making it directly comparable to standard sale-percentage language. Price retained is the actual price divided by the original price.

If the actual selling price is zero, the dollar markdown remains calculable but the markdown percentage is mathematically undefined because division by zero is not permitted. The calculator displays a dash rather than an infinite or misleading percentage.

How should the chart and table be interpreted?

The donut chart decomposes the original price into two parts: the amount paid by the customer and the markdown amount. The colored segments, legend, exact-value summary, and accessible data table all use the same live calculation. A single 100% segment appears only when one component is genuinely zero; an all-zero state shows a compact message instead of a decorative chart.

The comparison table translates the same model into per-item and quantity-level figures. Original revenue is the original price multiplied by quantity. Actual revenue is the new selling price multiplied by quantity. Total markdown equals the markdown per item multiplied by quantity. Gross profit equals selling price minus unit cost, multiplied by quantity when quantity is available. These are gross figures before overhead, payment fees, taxes, returns, or additional promotional costs.

What assumptions matter most?

The relationship between price and demand matters more than the markdown arithmetic alone. A lower price may improve sell-through, but it may also reduce gross profit per unit. Evaluate whether the expected increase in units sold is enough to offset the lower contribution per item. Inventory age, storage cost, seasonality, product obsolescence, and cash-flow needs can justify a deeper markdown even when unit margin falls.

For broader context, the U.S. Federal Trade Commission explains pricing and advertising principles in its business guidance. The U.S. Small Business Administration provides practical material on marketing and sales management. For accounting context, the Financial Accounting Standards Board maintains the authoritative Accounting Standards Codification. Retailers should apply the calculator consistently with their own tax, revenue-recognition, and promotional-pricing policies.

Common markdown mistakes

• Confusing markdown percentage with the percentage reduction from the original price.
• Comparing a tax-inclusive original price with a tax-exclusive actual price.
• Assuming a deeper markdown automatically increases total profit without estimating demand response.
• Ignoring unit cost, fulfillment fees, returns, and remaining inventory when reviewing gross profit.
• Using rounded intermediate values. This calculator keeps full precision internally and rounds only for display and export.