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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.

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