Return Rate Cost & Margin Impact Calculator

How a 12% return rate quietly erodes a clean margin

A $40 item with $14 COGS and $5.50 in unrecoverable outbound shipping has a clean profit of $20.50 per order if nothing is ever returned. At a 12% return rate, with an additional $4 restocking/return-shipping cost per returned order, the expected profit per order drops to $16.90 -- a return drag of $3.60, or about 17.6% of the clean profit figure.

The math weights both outcomes by probability: 88% of orders keep the full clean profit, while 12% of orders lose the clean profit entirely and additionally cost $9.50 (the $5.50 unrecovered outbound shipping plus $4 restocking). Expected profit = (1 - 12%) x $20.50 - 12% x $9.50 = $16.90.

A return doesn't just erase the profit on that order -- it actively costs money beyond the lost sale, since outbound shipping was never recovered and restocking/return shipping adds a further cost, which is why return drag ($3.60) is larger than simply 12% of clean profit ($2.46) would suggest.

Why this is an expected-value model, not a per-order guarantee

Expected-value model on one SKU. Refund payment fees may or may not reverse. This blends the returned and non-returned outcomes into one average per-order figure across many orders -- any single order is either a full clean profit or a return-cost outcome, never the blended $16.90 itself.

Whether payment processing fees get refunded on a returned sale varies by processor and platform -- some reverse the full fee, some keep a portion, and some keep it entirely. This model doesn't include payment fees at all, so factor that in separately if your processor doesn't fully refund fees on returns.

Return rate itself varies enormously by category -- apparel commonly sees return rates well above 12%, while consumables or made-to-order items often see much lower rates. Use your actual historical return rate for this SKU rather than a generic assumption.

Where high return rates originate

If sizing or fit uncertainty is driving returns, that's a product-page and description problem more than a pricing problem -- but this calculator at least quantifies what fixing it would be worth in margin recovered.

For the marketplace-fee side of a returned sale (whether platform commissions are also refunded), check the platform-specific fee calculator for wherever this SKU sells, such as the eBay Profit & Final Value Fee Calculator.

Frequently Asked Questions (FAQ)