Sales Tax & Discount Calculator
Shopping math gets confusing fast when a discount and a tax both apply. Enter the original price along with your discount and tax percentages to get the real, final price.
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How It Works
The order of operations matters: the discount is applied to the original price first, and then sales tax is applied to the already-discounted price (this matches how most retailers calculate tax at checkout). The formula is: Final Price = Price × (1 − Discount%) × (1 + Tax%).
Worked Example
A $120 item with a 25% discount and 7% sales tax comes out to $96.30 at checkout. You save $30 from the discount, bringing the price to $90, and then 7% tax is charged on that discounted $90 — not the original $120 — adding $6.30. It's a common mix-up to calculate tax on the sticker price instead of the discounted price, which would (incorrectly) suggest a final price of $98.10 instead of the actual $96.30.