Discount Calculator
Enter the price and the discount percentage — instantly see how much you save and the final amount you pay.
About Discount Calculator
The Discount Calculator turns a marked price and a discount percentage into your exact savings and final price. Add an optional tax percentage (GST, VAT, sales tax) to see the tax component and the bill-ready total.
The result separates the amount saved, discounted subtotal, tax and final amount. That breakdown is more useful than a single total when you need to compare two promotions or verify that a receipt applied the advertised reduction correctly.
Tax is applied after the discount — matching how most retail bills work. The calculator is currency-neutral, so it works with dollars, euros, rupees or any other unit as long as every entered amount uses the same currency.
How Discount Calculator works in practice
- 1Enter the original (marked) price of the item.
- 2Enter the discount percentage (0–100).
- 3Optionally enter a tax percentage such as GST, VAT or sales tax.
- 4Read the result cards: savings, discounted price, tax and final total.
- 5To model stacked offers, copy the discounted price back into the original-price field and apply the next percentage.
Jobs this tool is built for
- Check the checkout total for a sale item before placing an online order.
- Compare a percentage-off promotion with a competitor offering a lower marked price.
- Estimate the post-discount GST, VAT or sales-tax amount for a purchase.
- Apply consecutive offers by using the first discounted result as the next original price.
What you can do here
- Instant discount, tax and total calculation
- Optional post-discount tax field
- Separate savings and final-price cards
- Works with any currency unit
- Highlighted final-price card for quick checkout checks
Limits and honest caveats
- Tax is calculated on the discounted base, not on the original marked price — matching typical retail receipts.
- Stacked percentage discounts are multiplicative, not additive: 20% then 10% is not the same as 30% off.
- The calculator does not convert currencies or apply coupon caps, BOGO rules or cashback rebates.
Common questions about Discount Calculator
Does the tax apply before or after the discount?
After. The discount reduces the base price, then tax is added to that new base.
Can I calculate stacked discounts?
Yes. Apply the first discount, copy the discounted price into the price field, then apply the second percentage.
Is 20% off followed by 10% off the same as 30% off?
No. The second discount applies to the already reduced price. On 100, the two discounts produce 72 — a combined reduction of 28%.
Can I use this for any currency?
Yes. The formulas do not convert currencies; they preserve the unit of the original price. Enter all values in one currency.
What if a store taxes the full price before discount?
Most modern receipts tax after discount. If a seller taxes the pre-discount amount, compute tax on the original price separately and add it manually — this tool follows the post-discount tax order.
This page was written by the ToolSink team to explain how Discount Calculator works on this site — it is not syndicated, scraped, or spun from another publisher. How we write tool guides · Site updates · About ToolSink.
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