Does 15% off a $100 item mean you pay $85?
Discount signs usually describe the price before any applicable sales tax, delivery, or fees. A quick checkout estimate helps prevent surprises and lets you compare promotions on equal terms.
What we put into the calculator
The item starts at $100. We apply a 15% markdown, no additional fixed coupon, a quantity of one, and an illustrative 8% sales-tax rate on the discounted amount. The actual tax rate and taxable base vary by jurisdiction and product.
The numbers behind the result
| Discounted unit price | $85.00 |
|---|---|
| Quantity | 1 |
| Subtotal after discounts | $85.00 |
| Estimated tax | $6.80 |
| Total paid | $91.80 |
| Savings before tax | $15.00 |
What the result is really telling you
The discount is applied to the original item price first. Sales tax is then calculated on the discounted subtotal in this model. The price you pay can be higher than the advertised marked-down number, even though the discount is real.
Try changing one number
Enter a $10 fixed coupon after the percentage discount, and watch the subtotal change. Try a quantity of three, but remember that coupon rules differ between stores.
Open interactive calculator with this example ↗Where the estimate stops
This is a simplified checkout estimate. Tax-exempt goods, local tax districts, different coupon rules, shipping and promotional restrictions can alter the final charge.
How this result was produced: The displayed values are evaluated by the same JavaScript formula as the linked MyFastCalcTools calculator. There are no hidden live quotes or market data in this example. The calculator explains its simplifying assumptions.