How Discount Calculator works

Calculate final price, savings and effective discount, including an optional second stacked discount.

The formula

Final price = Original price × (1 − first discount) × (1 − second discount).

A practical example

20% off followed by another 10% off equals 28% overall, not 30%.

Important limitations

Results are estimates based only on the values you enter. They do not include every fee, tax, timing difference, market movement or product rule.

Frequently asked questions

How are two discounts combined?

They are applied one after the other to the remaining price.

Can the discount be 100%?

Yes. The final price becomes zero.

Does this include GST?

Only if your original price already includes it.