Amazon Profit Calculator

Method and assumptions

Use your category referral rate and actual fulfillment fee. The calculator deliberately keeps these inputs editable because Amazon fees depend on category, size tier and marketplace.

Worked scenario

Use one representative SKU and enter its selling price, product cost, inbound cost, fulfillment charge, referral rate, storage allowance, returns allowance and advertising spend per order. Compare merchant fulfillment with FBA using the same customer price and return assumption instead of comparing fee lines from unrelated products.

How to interpret the result

Contribution after ads is the most useful decision result for price and campaign changes. A positive product margin before ads does not establish that the SKU can support its current acquisition cost. Storage, aged inventory, removal and inbound placement can be period or event charges, so add an allowance derived from actual inventory behavior rather than assuming the base fulfillment fee is complete.

Input reference

Currency

Example default: USD

Sale price per unit

Example default: 39.99

Units sold

Example default: 1

Product cost per unit

Example default: 10

Referral fee rate

Example default: 15%

Fulfillment fee per unit

Example default: 5.25

Inbound freight per unit

Example default: 1.2

Returns allowance

Example default: 3%

Advertising cost

Example default: 4

Other order costs

Example default: 0

Common mistakes

• Applying a default referral rate to a category with a tier or minimum fee.
• Leaving inbound transportation and prep outside product economics.
• Comparing current ad spend with gross sales from a different attribution window.

Before using the result

1. Verify category, price tier, plan and fulfillment method.
2. Add a per-unit allowance for storage, returns and removals.
3. Compare the estimate with the Amazon revenue calculator and settlement.

Questions to check before deciding