Discount Calculator

Apply one or more discounts and see the real effective rate.

Original price

Discount

Result

Original price: 1,000
You save: 200
Effective discount: 20%
Final price: 800

Step by step

1,000 − 20% = 800

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About this tool

A single discount is simple arithmetic. Stacked discounts are where intuition fails: 20% off followed by another 10% off is not 30% off. The second discount applies to the already reduced price, so the combined effect is 28%.

The gap widens as you add more. Three 10% discounts come to 27.1%, not 30%. This calculator shows every step and the true effective rate, which is the number that matters when you are checking whether a campaign still leaves a margin.

How to use it

Enter the original price.
Enter the first discount percentage.
Add another discount for each one that applies in sequence — a seasonal offer plus a coupon, for example.
Read the final price, the amount saved and the effective rate. The step list shows how each discount was applied.

Examples

20% then 10% on a 1,000 price

1,000 → 800 → 720. The saving is 280, so the effective rate is 28%, not 30%.

1,000 · 20% · 10%

Final price 720 · effective 28%

Common problems

The till total does not match.: Check the order of operations and whether the discount applies before or after VAT. Both change the result, and different systems make different choices.
Stacked discounts add up to less than expected.: That is correct behaviour, not an error. Each discount reduces a smaller base than the one before it.
A campaign wipes out the margin.: Take the final price into the profit margin calculator with your real cost. A discount that leaves the price below cost is a loss, whatever the headline percentage looks like.