Margin Ruler

Return Cost Calculator

Returns cost more than the refund. This calculator adds up the processing labor, lost inventory, return shipping, and unrefunded payment fees so you see t…

Amazon FBA is active. Other marketplace modules stay marked as planned until audited.

Real Amazon fees, dated to sourceNo account or emailPrivate unless you save
Methodology

Return Cost Calculator. Estimates monthly and annual return burden from return rate, labor time, non-resellable inventory loss, return shipping, and non-refunded fee percentage.

Fee schedule/source date: return-cost assumptions reviewed 2026-05-08; Amazon Returns Processing Fee is treated as explicit scope where user inputs it.

Read the formula, inclusions, exclusions, and fee-category audit →

Calculator
Regional pages

Regional pages

Margin Ruler keeps a regional page for every active country so calculators stay tied to the local landing context. Browse below; the calculator math is the same on each.

Australia

Canada

New Zealand

United States