Discount Calculator

FinanceLast updated: August 17, 2026

A discount lowers a price by a given percentage. End-of-season campaigns advertise things like 'up to 40% off' and 'an extra 10% in the cart'; to know what you will actually pay, the discount has to be worked out properly.

This calculator covers three needs: applying a single discount to a list price to find the amount payable, working out the real combined effect of two stacked discounts (20% plus another 10% at checkout, for instance), and comparing the list and checkout prices to recover the discount rate that was applied. With stacked discounts, the results make it plain that rates do not add up — they combine by multiplication.

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Can be left empty. It is applied to the interim price after the first discount, like an extra discount in the cart.

Formula

Discount Amount = Price × Discount Rate / 100
Discounted Price = Price × (1 − Rate / 100)
Stacked: Final Price = Price × (1 − Rate₁/100) × (1 − Rate₂/100)
Discount Rate = ((List − Checkout) / List) × 100

Stacked discount rates do not add up. A 20% discount plus a 10% discount is not 30% but 1 − 0.80 × 0.90 = 28%, because the second discount applies to the already reduced interim price.

How to Calculate

  1. Choose the calculation type: applying a discount to a price, or finding the discount rate.
  2. In discount mode, enter the list price and the discount rate.
  3. If there is an extra discount at checkout, enter its rate in the second discount field; otherwise leave it empty.
  4. In rate mode, enter the list price and the checkout price.
  5. Read the final price, the total discount, and — with stacked discounts — the effective rate in the results section.

Worked Examples

Single discount: 20%

A 20% discount on an item listed at 1,500 ₺ takes off 300.00 ₺, leaving a final price of 1,200.00 ₺.

Final price: 1,200.00 ₺ · Total discount: 300.00 ₺ · List price: 1,500.00 ₺

Stacked discount: 20% plus 10% at checkout

A list price of 1,500 ₺ first gets 20% off (interim price 1,200 ₺), then a further 10% at checkout (120 ₺): the final price is 1,080 ₺ and the total discount is 420 ₺. The effective discount rate is 28.00% — less than 20% plus 10%, because the rates do not add up.

Final price: 1,080.00 ₺ · Total discount: 420.00 ₺ · List price: 1,500.00 ₺

Rate from the list-checkout difference

An item listed at 2,000 ₺ that rings up at 1,700 ₺ carries a discount of 300.00 ₺, which is a rate of 15.00%.

Discount rate: 15.00% · Discount amount: 300.00 ₺ · List price: 2,000.00 ₺

Frequently Asked Questions

How do you calculate a discounted price?
Multiply the price by (1 − rate/100). With 20% off an item of 1,500 ₺, you pay 1,500 × 0.80 = 1,200 ₺. To get the discount amount itself (300 ₺), multiply the price by the rate and divide by 100.
Why is 20% plus 10% not a 30% discount?
Because the second discount applies to the interim price left after the first one. Taking 20% off 1,500 ₺ leaves 1,200 ₺; the second discount of 10% is 120 ₺, not 150 ₺. The total discount is 420 ₺, an effective rate of 28%.
How do I find the discount rate from the list and checkout prices?
Divide the difference by the list price and multiply by 100: ((List − Checkout) / List) × 100. The denominator is always the pre-discount price; dividing by the checkout price instead makes the rate look bigger than it is.
Does 50% plus 50% make an item free?
No. The second 50% applies to the half price left after the first: an item of 1,000 ₺ drops to 500 ₺, then to 250 ₺. The effective discount is 75%; stacked discounts never reach 100%.
How does a price return to its original level after a discount?
An increase equal to the discount percentage is not enough. A price of 1,500 ₺ reduced by 20% to 1,200 ₺ needs a 25% increase to get back, not 20% (300 / 1,200). Discount and increase percentages are not symmetric.
Is VAT applied to the discounted price?
In retail, shelf prices include VAT: the discount is taken off that gross price, and the VAT is already inside what you pay. In invoiced wholesale, the discount is usually applied to the net amount excluding VAT, and VAT is then calculated on the discounted amount.