Free Discount Calculator
Take a percentage off or a fixed amount off, and see the discount in money, the final price, and what you gave away. A discount larger than the price is refused rather than shown as a negative total.
Fill in the fields and the result appears here as you type.
How the discount is worked out
A percentage discount takes that share off the original price: discount = price × percent ÷ 100, and the final price is what remains. A fixed amount is simply subtracted.
The calculator also shows the saving as a percentage of the original, which is the useful check when a discount was agreed as a round sum rather than a rate — "300 off" means very different things on a 1,000 job and a 12,000 one.
A worked example
An item priced at 250 with a 20% discount.
- Discount
- 250 × 20 ÷ 100 = 50
- Final price
- 250 − 50 = 200
- You save
- 50 ÷ 250 × 100 = 20%
Check the discount against your margin before agreeing it. On a 40% margin, a 20% discount does not cost you a fifth of the profit — it costs you half of it.
Questions about discount
How much profit does a discount actually cost me?
Far more than the discount percentage suggests, because it comes entirely out of the profit rather than the price. An item costing 60 and selling at 100 makes 40. Discount it 20% and you sell at 80, making 20 — the same goods, half the profit, for a fifth off the price.
How do I apply two discounts together?
Apply them one after the other rather than adding them up. 20% then 10% is not 30%: 100 becomes 80, then 72 — a 28% total reduction. Run the calculator twice, using the first result as the second original price.
Should I discount before or after tax?
Before. Discount the net price, then calculate tax on the reduced amount, which is what the customer actually pays tax on. Discounting a tax-inclusive total mixes the two and makes the invoice harder to reconcile.