Price After Discount + Tax Calculator
Enter price, discount %, and tax rate to see the exact final price — discount applied first, then tax added to the discounted price.
The Correct Order: Discount First, Then Tax
In the US and most countries, sales tax is calculated on the discounted (sale) price, not the original price. This means:
Step 2: Tax Amount = Sale Price × Tax Rate
Step 3: Final Price = Sale Price + Tax Amount
Example: $100 item, 10% off, 8% tax:
Tax = $90 × 0.08 = $7.20
Final = $90 + $7.20 = $97.20
If you taxed the original $100 first ($108), then applied 10% off ($97.20) — you'd get the same answer! The order doesn't affect the final price mathematically. But legally, the discount must be applied before tax is computed.
US State Sales Tax Rates (Quick Reference)
| State | State Rate | With Local Avg. |
|---|---|---|
| Oregon, Montana, Delaware, NH | 0% | 0% |
| Colorado | 2.9% | ~7.6% |
| Hawaii | 4% | ~4.5% |
| New York | 4% | ~8.5% |
| Florida | 6% | ~7% |
| California | 7.25% | ~8.7% |
| Texas | 6.25% | ~8.2% |
| Illinois | 6.25% | ~8.8% |
| Tennessee | 7% | ~9.5% (highest avg.) |
Note: Local (city/county) taxes add 0.5-4% on top of state rates. Enter your exact local rate for precise results.
Why 10% Off + Tax Can Cost More Than the Original
In high-tax states like Tennessee (~9.5%) or Washington (~9.2%), the tax on a discounted price can sometimes offset part of the discount. Example: $100 item, 5% off in Tennessee:
$95 sale price + $9.025 tax = $104.025 final — you pay MORE than the original $100 price. This is why checking "final price with tax" matters more than just the discount percentage.