Discount calculator
Apply successive discounts and a fixed coupon to compare the final price and savings.
Your inputs
The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
Your result
Complete the inputs to see your result.
How it works
- Final price = max(0, Price × Π(1 − Discount (%) ÷ 100) − Final fixed coupon)
- Worked example: 100 × 0.8 × 0.9 = 72; 72 − 5 = 67
- Supported input limits: Price: 0 ≤ x ≤ 1000000000000; Entries: 1–5; Final fixed coupon: 0 ≤ x ≤ 1000000000000
Assumptions and limitations
Amounts use the selected currency without conversion. Rates, prices, fees and index values are assumptions you supply, not current offers or legal tax rates. Financial simulations retain full period precision and stop at 1200 periods; displayed currency uses its minor units. Taxes, fees and market changes are included only where entered.
Sources
- OpenStax — sales tax, commission and discounts Sources reviewed: 2026-10-06
