How do I calculate a discount percentage from two prices?

Use the 'Find discount %' mode. Enter the original price and the final (sale) price and the tool calculates: discount % = (original − final) / original × 100.

What is a stacked discount?

A stacked (sequential) discount applies two percentage-off deals one after the other — not added together. For example, 20% off then 10% off on a $100 item is $100 × 0.80 × 0.90 = $72, not $70 (which would be 30% off).

How does the sales tax option work?

After applying all discounts, the tool multiplies the discounted price by (1 + tax rate) to give the final out-the-door price including tax.

Does stacking two discounts equal their sum?

No. 20% off followed by 10% off equals a combined saving of 28%, not 30%. Each discount applies to the already-reduced price.

What does 'amount saved' mean here?

'Amount saved' is the difference between the original price and the final discounted price (before any tax). It represents the actual dollars you are not paying compared to the list price.

Discount Calculator

Calculators· 17 tools

Free discount calculator. Enter an original price and a discount percentage to get the final price and the dollar amount saved instantly. Also works in reverse: enter original and sale price to find the discount rate. Stack multiple discounts (e.g., 20% then 10% off) and optionally add a sales-tax rate to get the true out-the-door price. No signup, fully client-side.

Original price ($)

Discount (%)

Sales tax % (optional)

Original price

$100.00

Discount (20% off)

− $20.00

Sale price

$80.00

Frequently Asked Questions

References

FTC Guidelines on Sale Pricing — Federal Trade Commission

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Frequently Asked Questions

References and sources

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