Compare a sale price
Enter a listed price and discount rate to see the amount saved and the remaining subtotal. This is useful when a promotion is expressed only as a percentage rather than displaying a final price.
Discount calculator
Calculate a discounted price and optional sales tax.
- ✓ Show discount savings
- ✓ Apply optional tax afterward
- ✓ Separate subtotal and total
Processed on your device
Understand the savings, subtotal, and final estimated price
See how a percentage discount changes a price. Add an optional tax rate to the discounted subtotal.
Estimate a simple checkout total
Add an optional tax percentage when the discounted subtotal is the intended tax base. The result is a straightforward arithmetic estimate. Shipping, fees, item-specific tax treatment, and a seller's rounding rules are not included.
Get the best result
Tax is applied after the discount. This is a simple estimate; actual checkout totals can differ due to local rounding and tax rules.
A practical example
Starting point
Original price: 100. Discount: 20%. Tax: 10%.
Expected result
Savings: 20. Discounted subtotal: 80. Tax: 8. Final total: 88.
The discount is applied first. The optional tax rate is then applied to the discounted subtotal.
Troubleshooting and useful checks
The store shows a different total
Check whether its displayed price already includes tax, whether extra fees apply, and how the seller rounds intermediate amounts. This tool does not model every checkout rule.
A rate is rejected
Use a nonnegative original price and discount and tax rates from 0 to 100. Enter percentages as whole rates, such as 15 for fifteen percent.
Frequently asked questions
A little clarity before you get started.
Can I enter a 100% discount?
Yes. The discounted subtotal and calculated tax will both be zero.
Does the calculator choose a currency?
No. The result uses the same monetary unit as your input. It performs arithmetic without converting exchange rates or applying currency-specific rounding rules.
Is tax applied before or after the discount?
After the discount. The tax amount is calculated from the discounted subtotal, which may differ from the rules used by a particular merchant or jurisdiction.
Can I calculate two successive discounts?
The page has one discount field. Calculate the first discount, then use the resulting subtotal as the original price for the second. Successive percentage discounts should not simply be added together.
Does the final total include shipping or extra charges?
No. It includes the original price, one percentage discount, and optional percentage tax only. Add or verify other charges separately at checkout.
Do I need an account to use this tool?
No. This tool is free to use without signing in. An account lets you keep a list of favorite tools.
Can I use this on a phone?
Yes, with a current browser. File support, download behavior, and available memory vary by device. For large documents and images, a computer is often more comfortable.