Discount Calculator
See the sale price, money saved, and after-tax total before you buy or compare offers.
Calculator
Discount Calculator
Enter the original price before any discount.
Add the percentage off.
Use zero if you only want the discounted subtotal.
Example values are loaded.
Result
Your result
A 25% discount on $180.00 lowers the subtotal to $135.00.
Sale price
$135.00
You save
$45.00
Total after tax
$145.13
Pricing breakdown
Next steps
Compare before you move on
Most people use one calculator to answer the first question and a related tool to pressure-test the decision.
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What this calculator shows
Discount math is easy to underestimate when several percentages are involved, especially once sales tax is added back in.
This tool shows the money saved, the discounted subtotal, and the total after tax in one pass.
How to use it
- 1. Enter the original list price.
- 2. Add the discount percentage advertised by the seller.
- 3. Include sales tax if you want the estimated final checkout total.
Formula and assumptions
Savings = list price x discount rate.
Discounted subtotal = list price - savings. Final total = discounted subtotal x (1 + tax rate).
Notes
This estimate assumes the discount is applied before tax.
Worked example
A $180 product at 25% off with local sales tax shows the difference between the ad price and the final total.
This example uses the default sample inputs loaded on reset. It does not update with the live calculator entries above.
Sale price
$135.00
You save
$45.00
Total after tax
$145.13
Feedback
Found a problem on this page?
Report confusing fields, broken math, or missing assumptions with the exact inputs you used so the issue can be reproduced.
FAQ
FAQ
Does tax apply before or after the discount?
This calculator assumes the discount reduces the price first and tax is applied afterward, which is common in many retail purchases.
FAQ
Can this help compare two sale offers?
Yes. Run the numbers for each price and discount combination to see which option has the lower after-tax total.