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FinanceFormula-based · Runs in your browser

Discount Calculator

Find the sale price, savings, optional tax, and effective discount.

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Inputs

Enter the values you know. Optional fields may be left empty.

Local save controls below
Required
$
Required
Required
Optional
%

Result

Updates as valid inputs change.

Calculated locally
Final price
—
You save
—
Price before tax
—
Tax
—
Effective discount
—

Saved locally, explained clearly

Drafts, calculations, scenarios, and workflow progress stay in this browser unless you export them.

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Calculation steps

Follow what happened from the selected formula to the displayed answer.

Show substituted values and intermediate working
Calculate current inputs to see the working.
  1. 1

    Formula selected

    The calculator uses the following formula or method.

    Final price = original price − discount + tax

    A fixed discount is capped at the original price. Tax is applied after the discount.

  2. 2

    Values entered

    Your values are placed into the calculation.

    Enter values to see what is used in this step.

  3. 3

    Result calculated

    The formula or method produces the following result values.

    Results will appear after a successful calculation.

  4. 4

    Answer formatted

    Displayed values are rounded and formatted using each output’s configured precision.

Scenario comparison

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No scenarios saved for this calculator yet.

Recent calculations

Successful calculations are retained locally according to your privacy settings.

No local history for this calculator yet.

Data and privacy

How it works

Choose a percentage or fixed discount. Optional tax is added to the reduced price.

Input query strings and outputs

Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.

Input query strings

4
  • ?originalPrice= Original price

    Money · Required · Default: 120

  • ?discountType= Discount type

    Choice · Required · Default: percent · Accepted values: percent, fixed

  • ?discountValue= Discount value

    Number · Required · Default: 20

  • ?taxRate= Tax after discount

    Percentage · Optional · Default: 0

Outputs

5
  • finalPrice Final price

    Currency · Primary output

  • savings You save

    Currency

  • discountedPrice Price before tax

    Currency

  • taxAmount Tax

    Currency

  • effectiveDiscount Effective discount

    Percentage

Fixed discounts

A fixed discount cannot reduce the price below zero.

Check the receipt

Some stores calculate tax or stacked coupons differently.

Sources
  • No external reference is listed for this calculator. Its formula and variable definitions are shown above.
Limitations
  • A fixed discount is capped at the original price. Tax is applied after the discount.
  • Estimates use the rates, timing, and assumptions entered. Fees, taxes, lender rules, and future changes are included only where explicitly shown.

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