Discounts seem straightforward, but stacking multiple discounts is where math gets interesting. A 20% + 10% discount is NOT 30% off — it's 28% off ($100 → $80 → $72). This calculator handles single and stacked discounts correctly, showing you exactly how much you save.
How to Use
Enter pricing details:
- Original price: The pre-discount price
- Discount %: One or more discounts
- Tax: Optional tax rate applied after discount
How Stacking Works
Each discount applies to the reduced price, not the original: $100 → 20% off → $80 → 10% off → $72. Total savings: $28 (28%), not $30 (30%).
Shopping Tips
- Compare unit prices, not just discounts
- Buy-one-get-one-50%-off = 25% off each item
- A $5 coupon is better than 10% off if the item costs less than $50
Step-by-Step Instructions
- 1Enter the original price.
- 2Add one or more discount percentages.
- 3Optionally set tax rate.
- 4View the final price and savings.
- 5Check the effective discount.