Discount Calculator

Calculate the final price after applying any discount percentage. Enter the original price and discount to instantly see the sale price and your savings.

Perfect for:

• shopping sales
• clearance items
• promotional discounts

Find out what percentage discount you're getting when you know the original and sale prices.

Our discount percentage calculator reveals the true discount rate, helping you compare deals and find the best savings.

Calculate stacked or sequential discounts accurately. When stores offer '20% off plus extra 10% off', the total isn't 30% — it's 28%.

Our double discount calculator shows the true savings and final price.

See your true final price with both discount and tax calculated.

Enter original price, discount percentage, and tax rate to get the complete picture of what you'll actually pay at checkout.

A discount calculator applies the formula Sale Price = Original Price × (1 − Discount% ÷ 100) to turn a percentage off into a real dollar price. It converts the percentage into a decimal, subtracts it from 1 to get the fraction you still pay, and multiplies that by the original price.

The same tool works in reverse. If you know the original and sale prices, it computes the discount rate as ((Original − Sale) ÷ Original) × 100.

A "percent off" is simply a proportional markdown, not a flat dollar amount. The Federal Trade Commission (FTC) notes that a genuine discount must be measured against a real former or prevailing price, which is exactly the reference figure this calculator uses.

Start by choosing what you want to solve for, then enter your known values. Suppose a jacket is listed at $120 with a 30% off tag and you want the checkout price.

Follow these steps:

• Select "Sale Price from Discount %" as the calculation type.
• Enter 120 as the original price and 30 as the discount percentage.
• Optionally add your local tax rate to see the after-tax total.

The calculator returns a sale price of $84.00 and savings of $36.00, because $120 × (1 − 0.30) = $120 × 0.70 = $84.

For budgeting decisions, the Consumer Financial Protection Bureau (CFPB) recommends comparing the final out-the-door price, tax included, rather than the advertised percentage alone.

The most common discount mistake is adding stacked percentages together instead of applying them sequentially. "20% off plus an extra 10%" is 28% off, not 30%, because the second discount applies to the already-reduced price.

Watch out for these frequent errors:

• Adding two percentages together rather than multiplying the remaining fractions (0.80 × 0.90 = 0.72).
• Applying tax to the original price instead of the discounted price when the store discounts first.
• Confusing "25% off" with "pay 25%" — you actually pay the remaining 75%.
• Trusting an inflated "original" price the Federal Trade Commission (FTC) warns may never have been a real selling price.

Double-check by confirming that savings plus sale price equals the original.

To reverse a discount, divide the sale price by (1 − Discount% ÷ 100). If an item costs $60 after a 25% markdown, the original was $60 ÷ 0.75 = $80. This works because the sale price represents 75% of the original, so dividing restores the full 100%.

This is useful for verifying advertised savings and for accounting, where you may know the net price you paid but need the pre-discount value for a return or reimbursement.

When retailers show a struck-through "was" price, the Federal Trade Commission (FTC) advises that it should reflect a bona fide former price, so reverse-checking the math helps you confirm whether the claimed discount is genuine.

Whether a percentage discount or a flat-dollar discount saves more depends entirely on the item's price. A percentage off grows with the price, while a fixed dollar amount stays constant, so there is always a break-even point where they are equal.

For "20% off" versus "$15 off," the two are equal at $75, because 20% of $75 is exactly $15.

• Below $75, the flat $15 off wins.
• Above $75, the 20% off wins.
• At exactly $75, they are identical.

To compare quickly, divide the flat amount by the percentage as a decimal ($15 ÷ 0.20 = $75). The Consumer Financial Protection Bureau (CFPB) encourages this kind of side-by-side comparison before committing to a purchase.

A bulk discount lowers the per-unit price as the quantity purchased rises, so you calculate the discount at each quantity tier. For example, buying 1 unit may be full price, 2–4 units 10% off, and 5+ units 20% off.

To find your total cost, multiply the number of units by the discounted per-unit price for the tier you qualify for.

• Identify the quantity tier your order falls into.
• Apply that tier's discount to the per-unit price.
• Multiply the discounted unit price by your quantity.

Compare the per-unit cost across tiers, since buying more to reach a higher tier only saves money if you actually need the extra units. The Federal Trade Commission (FTC) cautions shoppers against over-buying to chase a volume discount.

A discount is only real if the "was" price it references was a bona fide selling price. The Federal Trade Commission (FTC) has long held that comparing a sale price to an inflated or fictitious former price can be a deceptive pricing practice.

To judge whether a markdown is genuine, look past the percentage on the tag:

• Check the item's typical price across several retailers, not just the store's own "original."
• Note that broad price levels shift over time, which the U.S. Bureau of Labor Statistics (BLS) tracks through the Consumer Price Index.
• Use the calculator to confirm the advertised percentage matches the actual price drop.

The National Retail Federation (NRF) also publishes retail pricing and promotional trends that provide useful context for seasonal sales.