A discount calculator answers two questions in one step: what will I actually pay, and how much am I saving? Enter the original price, the quantity and the percentage off, and the calculator shows the discount amount and the sale price. Add a sales tax or GST rate to get the final total, or switch modes to remove tax from a tax-inclusive price and see the underlying net figure. It is equally useful for setting a promotion, because it shows what a 15% or 25% discount does to the price your customer sees.
Discount and Sales Tax Calculator
The discount and tax calculator handles the two-step arithmetic of a sale: apply the discount to the price, then add sales tax, VAT or GST on the discounted amount. A $120 item at 15% off is $102; with 8% sales tax the final price is $110.16 and the overall saving is 15%. Enter a quantity to price a whole order, or switch to the second mode to work backwards from a tax-inclusive receipt to the net price and the tax portion.
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Frequently Asked Questions
How do I calculate a percentage discount?
Multiply the price by the discount percentage and subtract: $120 at 15% off is $120 − $18 = $102. The calculator also handles quantities and adds tax to the discounted price.
Is tax applied before or after the discount?
After. Sales tax and GST are charged on the price actually paid, so the discount reduces the tax as well. The calculator follows this order.
How do I find the original price before a discount?
Divide the sale price by 1 minus the discount: a $102 sale price at 15% off came from $102 ÷ 0.85 = $120.
