Discount Impact Calculator

Compare per-unit profit before and after discounts with optional payment fee impact.

Inputs

Enter your assumptions. Percent fields use plain percentages (for example: 2.9).

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Original Price ($)Discount (%)Unit Cost ($)Payment Fee (%)

How to use this calculator

Enter consistent inputs for Original Price ($), Discount (%), Unit Cost ($), and Payment Fee (%).
Adjust one variable at a time to measure true sensitivity.
Review New Price, Profit Before, and Profit After before deciding on budget, pricing, or channel changes.

Input and output checklist

Inputs

Original Price ($)
Discount (%)
Unit Cost ($)
Payment Fee (%)

Outputs

New Price
Profit Before
Profit After
Profit Change

Scenario Notes (optional)

Use this before launching promotions to confirm whether conversion lift assumptions can offset lower unit profit.

Evaluating discount impact only at revenue level, not contribution level.
Ignoring payment fee effects when selling price changes.
Treating all discounted orders as incremental demand.

Example: If a 15% discount reduces per-unit profit by 5.70 USD, you need enough incremental unit volume to recover that gap before considering campaign overhead.