How percentage discounts reduce a price
For a single percentage discount, savings equal Original Price × Discount Rate. The final price is the original amount minus those savings.
Toolmera also supports a fixed-amount discount when a promotion removes a specific monetary amount instead of a percentage.
Why stacked discounts are not simply added
Sequential discounts are applied one after another. A 20% discount on 100 reduces the price to 80; an additional 10% discount then removes 8 from that reduced balance.
The final price is 72, so the effective discount is 28%, not 30%. Toolmera calculates the combined effective percentage automatically.
20% off 100Price becomes 80
Extra 10% off 80Price becomes 72
Effective total discount28%