Amazon profit calculator
Amazon takes a referral fee on the total sales price, then FBA fees, storage and PPC stack on top. This calculator separates each of them so you can see the margin that survives after advertising.
Amazon platform capabilities
Fee data currently modelled
US, GB, DE, IN
Marketplace availability
FR, ES, IT, NL, CA, AU, JP, AE, SG, MX, BR, SE, PL
Supported currencies
USD, GBP, EUR, INR
Fee categories modelled
- Referral fee
- Per-item closing fee (Individual plan)
- Variable closing fee (media)
- Payment processing
What this calculator includes
- Referral fee on item price plus shipping, with a minimum fee applied where relevant
- Optional per-item closing fee for the Individual selling plan
- Optional variable closing fee for media categories
- FBA fulfilment presets you can replace with your exact fee table
- Monthly storage allocated per unit
- PPC modelled as TACOS so ad cost scales with price
What it does not include
- Long-term storage surcharges and removal orders
- Inbound placement and partnered-carrier fees
- Digital services fees applied in some marketplaces — add them as a fee override
- Coupons, Lightning Deal fees and Vine enrolment
Worked example
- Selling price: 34.99
- Referral fee (15%): 5.25
- FBA fulfilment (est.): 4.75
- Product cost: 9.00
- PPC at 12% TACOS: 4.20
In this illustration, referral plus FBA alone take about 29% of the sale price before a single advertising dollar is spent. Advertising is usually what decides whether an Amazon SKU is viable.
Frequently asked
Does Amazon charge a separate payment processing fee?
No. Amazon settles payments to you directly and card processing is built into the referral fee, so OmniProfit shows payment processing as zero for Amazon.
Why is my referral fee different?
Referral rates are category-specific and commonly range from about 8% to 45%. Open “Marketplace fees & payment” and set the exact percentage for your category — the calculation updates instantly.
How should I handle the Professional plan subscription?
It is a fixed monthly cost, not a per-order cost. Put it in Overhead → Monthly total along with software, and set your expected monthly order volume so it is allocated per order.
What is TACOS and why use it instead of ACOS?
TACOS is total advertising spend ÷ total sales revenue, including organic sales. It scales with price, which makes it the more useful lever when you are testing price changes.