Discount Calculator
Calculate the payable total and item savings for a discounted order.
Formula and assumptions
Order · Discount per item = Original unit price × Discount (%) ÷ 100. Discounted unit price = Original unit price × (1 − Discount (%) ÷ 100). Order tax = Original unit price × (1 − Discount (%) ÷ 100) × Quantity × Tax (%) ÷ 100. Final total = Original unit price × (1 − Discount (%) ÷ 100) × Quantity × (1 + Tax (%) ÷ 100). Total savings = Original unit price × Discount (%) ÷ 100 × Quantity.
Tax applies to the discounted price. Savings compare pretax merchandise prices.
This tool processes inputs in your browser. Calculator values are not stored or sent by this plugin.
Further reading: Digital Marketing Services: Elevating Your Brand and Driving Sales in the Online Era
Related tools: Profit Margin and Markup Calculator
Page editor: Usman Arshad · Last edited: November 3, 2026
How to use this tool
Choose the relevant mode, enter Original unit price and complete the labelled fields. Use Calculate to review your result.
Worked example
Original unit price = 100, Discount (%) = 20, Tax (%) (optional) = 10, Quantity = 2.
Discount per item = 20.00 currency units · Discounted unit price = 80.00 currency units · Order tax = 16.00 currency units · Final total = 176.00 currency units · Total savings = 40.00 currency units.
These example values are illustrative.
Interpreting the result
Use the pretax savings line for the promotional claim and the final total for the customer estimate. Local tax treatment should be checked separately.
Assumptions and limitations
Tax applies to the discounted price. Savings compare pretax merchandise prices.
Is sales tax included in savings?
Savings cover the merchandise discount. Tax appears separately on the reduced order value.