Discount Calculator
Find the final price after a percent-off discount, plus see your savings and any added sales tax.
Updated 2025-12-15Source: Standard percentage arithmetic
Final price
$90.00
You save $30.00 (25%)
- Original price
- $120.00
- Discount
- − $30.00
- Subtotal
- $90.00
- Final price
- $90.00
Frequently Asked Questions
How do I calculate the sale price?+
Sale price = original price − (original price × discount %). For example, $120 at 25% off = $120 − $30 = $90.
Is sales tax applied before or after the discount?+
In most US states, sales tax is applied to the discounted price (after the discount). This calculator follows that convention.
How do I calculate the discount percentage from two prices?+
((Original − Sale) ÷ Original) × 100. If something originally cost $80 and is now $60, the discount is ((80 − 60) ÷ 80) × 100 = 25% off.
Does this work for stacking discounts?+
This calculator applies a single discount percentage. For stacked discounts (e.g., 20% off + extra 10%), apply them sequentially: 20% off first, then 10% off the result.