How to Find the Price After a Discount (20%, 30%, 50% Off)
Use a single multiplier to find the price after any discount. Includes a multiplier table, shopping examples and how to add sales tax afterwards.
There is a faster way to find a sale price than working out the discount and subtracting it. Multiply the original price by what is left after the discount, and you have the final price in one step.
Sale price = original price × (1 − discount rate)
A 30% discount leaves 70%, so you multiply by 0.70.
The multiplier table
| Discount | Multiply by |
|---|---|
| 10% off | 0.90 |
| 15% off | 0.85 |
| 20% off | 0.80 |
| 25% off | 0.75 |
| 30% off | 0.70 |
| 40% off | 0.60 |
| 50% off | 0.50 |
Want to try it right away? Discount Calculator is free and needs no signup.
Shopping examples
| Original price | Discount | Calculation | Sale price | You save |
|---|---|---|---|---|
| $129.99 | 30% | 129.99 × 0.70 | $90.99 | $39.00 |
| $59.95 | 40% | 59.95 × 0.60 | $35.97 | $23.98 |
| $18.50 | 25% | 18.50 × 0.75 | $13.88 | $4.62 |
Round to the nearest cent. For $18.50 × 0.75, the exact answer is $13.875, which rounds to $13.88.
Add sales tax after the discount
In most cases sales tax is applied to the discounted price. Take the $90.99 jacket and add 8% tax:
- Tax: 90.99 × 0.08 = $7.28
- Total at the register: 90.99 + 7.28 = $98.27
Rules differ by state and by coupon type, so treat this as the usual method and check the receipt.
Let the calculator do it
Type the original price and the discount rate, and you see the amount saved and the final price immediately. It is handy when you compare two offers side by side.
FAQ
What is 30% off $129.99?
Multiply 129.99 by 0.70 to get $90.99.
How do I take 15% off a price?
Multiply the price by 0.85.
Is it better to compute the discount first or use the multiplier?
Both give the same result. The multiplier is faster because it is one step.
How do I find the discount if I only know the two prices?
Subtract the sale price from the original, divide by the original price and multiply by 100. For a quick lookup of common discounts, use the discount chart.