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Shipping, Ecommerce & WarehouseGenerated accuracy model review: 2026-05-06
Etsy Fee Calculator accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- Gross order revenue = item price + shipping charged. Total fees = gross x platform fee rate + listing fee + gross x payment fee rate + payment fixed fee + gross x offsite ad rate + other fixed fees. Profit = gross - item cost - shipping cost - total fees.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Item Price: $45
- Shipping Charged: $5
- Item Cost: $12
- Shipping Cost: $6
- Platform Fee Rate: 6.5%
- Listing Fee: $0.2
- Payment Fee Rate: 3%
- Payment Fixed Fee: $0.25
- Offsite Ad Rate: 0%
- Other Fixed Fees: $0
Expected outputs
- Profit per Order: $26.80
- Total Fees: $5.20
- Profit Margin: 53.60%
- Effective Fee Rate: 10.40%
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
- Platform fee is calculated on item price plus shipping charged.
- Payment fee is calculated on item price plus shipping charged plus fixed payment fee.
- Offsite ad fee is optional and calculated from the user-entered ad rate.
- The calculator does not include live Etsy rates or official fee tables.
Unit handling
- Item Price accepts values in $.
- Shipping Charged accepts values in $.
- Item Cost accepts values in $.
- Shipping Cost accepts values in $.
- Platform Fee Rate accepts values in %.
- Listing Fee accepts values in $.
- Payment Fee Rate accepts values in %.
- Payment Fixed Fee accepts values in $.
- Offsite Ad Rate accepts values in %.
- Other Fixed Fees accepts values in $.
- Profit per Order is displayed as currency.
- Total Fees is displayed as currency.
- Profit Margin is displayed as a percentage.
- Effective Fee Rate is displayed as a percentage.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Currency outputs are displayed with standard US dollar formatting.
- Percent outputs are displayed with two decimal places.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current etsy-fee-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Etsy Fee Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.