Discount calculator.
Work out the checkout price after successive discounts and sales tax.
Discount inputs
Discounts apply one after another, then tax applies to the reduced price. Local sales-tax and coupon rules may differ.
How this discount calculator works
Apply each discount to the price remaining after the previous discount. The calculator then applies sales tax to the reduced amount. Savings are measured against the original price before tax, keeping the discount and tax effects separate.
A worked example
A 20% discount followed by 10% off reduces 100 to 72. The effective discount is 28%, not 30%. With 5% tax the checkout total becomes 75.60.
Does coupon order matter?
Pure percentage discounts commute, but fixed-value coupons, minimum spend conditions and local tax rules can change the result. This tool models two percentage discounts only.
Calculations run on your device. Review your results before exporting or sharing them.