CalcSolverPRO
Explore Tools

Everyday & School Calculators

Discount Calculator

Enter the original price and the discount. You can add a second discount and sales tax. The calculator shows the amount saved, the price you pay, and why two discounts do not simply add.

Updated October 3, 2026Written and reviewed by Mateuss M.Method: how we calculate

Try an example:
AnswerPay 60.00 · Save 20.00
  • Sale price before tax: 60.00
Step-by-step working 2 steps
  1. 1
    First discount
    80 × 25% = 20
80 − 20 = 60

    Discount amount = price × percent ÷ 100, then subtract it.

  2. 2
    Round to cents
    Final price 60.00, you save 20.00 (25% of the original)

How to use the discount calculator

  1. Enter the original price and the percent off.
  2. Add an extra discount or sales tax if they apply.
  3. Read what you pay and what you save.
  4. Open the steps to check each stage.

Discount formulas

Saving = price × discount ÷ 100
Sale price = price − saving = price × (1 − discount ÷ 100)
Two discounts: price × (1 − d₁) × (1 − d₂)

Tax is normally added after the discount.

Worked examples

Each example below is generated by the same calculator you used above, so the working always matches the answer.

25% off 80
AnswerPay 60.00 · Save 20.00
  • Sale price before tax: 60.00
Step-by-step working 2 steps
  1. 1
    First discount
    80 × 25% = 20
80 − 20 = 60

    Discount amount = price × percent ÷ 100, then subtract it.

  2. 2
    Round to cents
    Final price 60.00, you save 20.00 (25% of the original)
20% then 10% off 100
AnswerPay 72.00 · Save 28.00
  • Sale price before tax: 72.00
Step-by-step working 3 steps
  1. 1
    First discount
    100 × 20% = 20
100 − 20 = 80

    Discount amount = price × percent ÷ 100, then subtract it.

  2. 2
    Extra discount (applied to the reduced price)
    80 × 10% = 8
80 − 8 = 72

    Stacked discounts multiply; they do not simply add. 20% then 10% is 28% off in total.

  3. 3
    Round to cents
    Final price 72.00, you save 28.00 (28% of the original)
10% off 100 plus 8% tax
AnswerPay 97.20 · Save 10.00
  • Sale price before tax: 90.00
Step-by-step working 3 steps
  1. 1
    First discount
    100 × 10% = 10
100 − 10 = 90

    Discount amount = price × percent ÷ 100, then subtract it.

  2. 2
    Add sales tax
    90 × 8% = 7.2
90 + 7.2 = 97.2
  3. 3
    Round to cents
    Final price 97.20, you save 10.00 (10% of the original)

Common mistakes to avoid

Adding two discounts together

20% then 10% is not 30% off: the second discount applies to the already-reduced price.

Taxing the original price

Sales tax is usually charged on the discounted price.

Forgetting to subtract

The percent-of calculation gives the saving, not the price you pay.

Frequently asked questions

How do I find the original price from a sale price?

Divide the sale price by (1 − discount ÷ 100). The percentage calculator’s “X is Y% of what?” mode does the same job.

Is the currency important?

No. The arithmetic is the same in any currency; results are rounded to two decimals.