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Successive discount calculator

Two successive discounts are multiplied, not simply added. This calculator shows the true combined reduction.

LIVE CALCULATORUPDATES AS YOU TYPE

● Your numbers stay in this browser.

Final price

86.4

120 × (1 − 20%) × (1 − 10%)

You save33.6
Effective discount28%

Two discounts: what you actually save

The second discount applies to the reduced price. These examples show the final price and the equivalent single discount.

20% off, then another 10%

What is the final price of 120 with discounts of 20% and 10%?

The first discount leaves 120 × 0.8 = 96. The second leaves 96 × 0.9 = 86.40. You save 33.60, which is 28% of 120, rather than 30%.

86.40; a total discount of 28%

Why 50% plus 50% is not free

What remains from 100 after two 50% discounts?

The first discount halves 100 to 50. The second halves 50 to 25. Each percentage uses the price at that step, so 25% of the original remains.

25; a total discount of 75%

A sale followed by a small coupon

An item costs 200, with 30% off and then a 5% coupon. What do you pay?

200 × 0.7 = 140, then 140 × 0.95 = 133. The coupon saves 7 on the reduced price. Total savings are 67, or 33.5% of the original.

133; a total discount of 33.5%

Two rates can be compared with one offer

The equivalent discount is 1 − (1 − first rate) × (1 − second rate), with rates written as decimals. Use the final prices to compare offers on the same original price.

Compare discount offers

Check what the shop actually applies

The calculator applies two percentage discounts without intermediate rounding. Fixed-amount coupons, excluded products, fees and shop-specific rounding can change an actual checkout total.

THE SIMPLE METHOD

From question to answer in three moves.

01

Enter the original price.

02

Enter the first and second discount rates.

03

See the final price and effective combined discount.

FORMULA & LIMITS

The calculation is visible, not a black box.

The second discount applies to the already reduced price; do not add the rates. The effective discount is undefined when the original price is zero. Taxes and fees are not added; check rates outside 0–100%.

Formula used
  • final price = original × (1 − first rate ÷ 100) × (1 − second rate ÷ 100)
  • effective discount % = savings ÷ original × 100

Calculation checks updated 27 September 2026: automated tests cover sample inputs and numeric boundaries, not every possible input or commercial rule.

CLEAR ANSWERS

Math without mystery.

Can I add two discount percentages together?+

Usually no. A second discount applies to the already discounted price, so 20% followed by 10% is an effective 28% discount, not 30%.

How is the final price calculated?+

Multiply the original price by one minus the first rate, then by one minus the second rate.

Does the result include tax?+

No. The result is before tax unless your starting price already included it.

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