Apply a first discount, an additional sequential discount, and optional tax to an original price.
Calculate with the Discount Calculator
Enter the details below. Required values are validated before results are shown.
Discount Calculator results
How to use the Discount Calculator
- Choose the display currency and any calculation mode or frequency.
- Enter each required value using a consistent currency and time basis.
- Select Calculate or press Enter.
- Review the result explanation, assumptions, and any schedule before relying on the estimate.
Worked example
20% then 10% off 1,000 gives 720 before tax, not 700.
Understanding the results
The summary separates the most important output from supporting values. Currency selection changes formatting only; it does not convert exchange rates or alter a currency-independent formula.
Frequently asked questions
Why do two discounts not simply add together?
Sequential discounts are multiplied, not simply added; tax is applied after discounts. The result depends on the values and assumptions entered, so compare it with the applicable provider or official rule.
Can I use decimal values in the Discount Calculator?
Yes. Decimal values are supported. Results are calculated at full JavaScript numeric precision and formatted for readability.
Are the Discount Calculator results guaranteed?
No. The calculator provides an estimate based on the entered assumptions and is not financial, tax, investment, lending, payroll, or legal advice.