Free Shipping Threshold Calculator accuracy and testing

Formula source

• Threshold = average order value + desired added cart value. Added gross profit = desired added cart value * gross margin percent. Contribution after shipping = added gross profit - shipping cost.

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

• All rates, fees, costs, order values, demand volumes, and policy targets are user-entered assumptions.
• The calculator uses transparent deterministic formulas and does not fetch live carrier, marketplace, warehouse, tax, or provider rates.
• Results are planning estimates and should be checked against your carrier terms, marketplace fees, inventory system, and accounting policy.
• Inputs are processed locally in your browser.

Unit handling

• Average Order Value accepts values in $.
• Desired Added Cart Value accepts values in $.
• Gross Margin accepts values in %.
• Average Shipping Cost accepts values in $.
• Suggested Free Shipping Threshold is displayed as currency.
• Added Gross Profit is displayed as currency.
• Contribution After Shipping is displayed as currency.
• Break-Even Added Cart Value is displayed as currency.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.
• Currency outputs are displayed with standard US dollar formatting.
• Input precision follows configured step values where provided.

Version history

Change log