Hi all,

I’m trying to accurately calculate my final profit for FBM orders, but I’m getting conflicting results compared to online calculators and Amazon’s own revenue calculator.

Here’s an example of how I work it out (all figures include VAT):

Sale Price: £5.49

Postage Cost: £1.55

Cost of Item: £1.50

Amazon Fee (from Amazon’s own report): £0.53

Based on this, my calculation is:

Profit = £5.49 - £1.55 - £1.50 - £0.53 = £1.91

However, most calculators (and the Amazon revenue calculator) show the fees as around £1.01, which would make the profit about £1.43 instead.

Why is there such a difference? Am I missing something in the fee structure (e.g., VAT on fees, referral fees, closing fees, or other deductions)?

Any advice or clarification would be much appreciated!