Amazon fulfilment decision · Free · No signup

Amazon FBA vs FBM Profit Calculator

Compare per-order contribution under FBA and FBM without pretending one fulfilment model is always cheaper.

Browser-local arithmeticEditable fee assumptionsUSD · GBP · EUR

Amazon seller profit lab

FBA vs FBM contribution

Selling price (USD)COGS (USD)Referral fee (%)Advertising / order (USD)FBA fulfilment (USD)FBA inbound shipping (USD)FBA inbound placement (USD)FBA storage / unit (USD)FBM carrier shipping (USD)FBM pick/pack + labour (USD)FBM packaging (USD)FBM return exposure / order (USD)

Contribution comparison

FBA profit / order

$10.49

FBM profit / order

$9.54

Difference: $0.95 per order in favour of FBA in this scenario.

What this answers

Which fulfilment model leaves more contribution profit under the costs you entered?

How much do inbound and storage costs change the FBA side of the decision?

How expensive can carrier shipping, labour, packaging and returns make FBM?

Recurring pain = paid opportunity

The calculator is free. Rebuilding the model every week should not be.

Solarc Labs is building toward saved SKU models, repeated profit checks, inventory monitoring, alerts and exports. The paid boundary is automation and retained workflow—not access to basic arithmetic.

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Independent planning tool: Solarc Labs is not affiliated with or endorsed by Amazon. Amazon fees vary by marketplace, category, fulfilment method, dimensions, inventory age, services and policy changes. Replace defaults with your own records. Outputs are estimates and are not tax, customs, accounting, advertising or marketplace-fee advice.