Amazon FBA Profit Calculator

Enter your product numbers and the fees from Seller Central. Defaults: 15% referral fee and a small-standard FBA fee — check yours for size and weight.

Net profit per unit –
Amazon fees per unit –
Referral fee –
Net margin –
ROI on product cost –
Monthly profit –

What is the Amazon FBA Profit Calculator?

Amazon FBA profit depends on fees that change with your category, size and weight: the referral fee, the FBA fulfillment fee, storage — and the PPC you spend to get sales.

Enter your numbers to see net profit per unit, margin, ROI on product cost and monthly profit. Defaults are a 15% referral fee and a small-standard fulfillment fee; take your exact fees from Seller Central.

How to use the Amazon FBA Profit Calculator

  1. Enter the selling price, product cost and shipping to Amazon per unit.
  2. Enter your referral fee % and FBA fee for your size tier.
  3. Add storage and ad spend per unit sold, and units sold per month.

Understanding your results

Net profit per unit
Price − Amazon fees − product cost − inbound shipping − ads.
ROI on product cost
Profit ÷ (product + inbound cost). Many sellers look for 100%+.

Frequently asked questions

How much are Amazon FBA fees?

Most categories pay a 15% referral fee, plus a fulfillment fee from about $3 for small, light items, plus monthly storage.

What is a good FBA profit margin?

Many sellers aim for 20–30% net margin after fees and ads.

Should I include PPC in my calculation?

Yes — divide your monthly ad spend by units sold for a per-unit figure.