Amazon Profit Calculator (FBA VS FBM)

Use this Amazon FBA profit calculator to estimate referral fees, fulfillment costs, and real profit margins for both FBA and FBM products before sourcing inventory.

Built for serious Amazon sellers.

FBA

FBM

Ads: % of price

Ads: $ per unit

Single

Compare

Save Run

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Download CSV

Sale price ($)

Product cost / COGS ($)

Referral fee (%)

Inbound shipping ($/unit)

FBA fulfillment fee ($)

Ad spend (ACOS %) of price

Return rate (%)

Cost per return ($)

Target units / month

Monthly overhead ($) (optional)

Advanced costs (optional)

Prep/packaging ($)

Other costs ($)

Storage ($/unit)

Closing fee ($)

Tip: Overhead is monthly (software, VA, rent). Storage here is per-unit.

Quick signals (lite)

Margin strength

Target: 30%+ for faster scaling

Runway (target units)

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Saved runs 0

Save product checks here so you can come back and compare later (without a comparison grid).

Results

Net Profit (per unit)

$0.00

Profit health

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Verdict

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Breakdown (Revenue vs Fees / Ads / Net)

Revenue: $0.00 Fees: $0.00 Ads: $0.00 Net: $0.00

Margin0.0%

ROI0.0%

Break-even ACOS i 0.0%

Break-even price$0.00

Monthly net profit (at target units)$0.00

Monthly break-even units0

Monthly net profit = (profit per unit × target units/month) − overhead.

Compare Products (A vs B vs C)

Global toggles apply to all products (FBA/FBM + Ads mode) so comparisons stay consistent.

Tip: Keep assumptions consistent.
Compare shows per-unit metrics.

Product ASide-by-side

Sale price ($) COGS ($) Referral fee (%) Inbound shipping ($/unit)

FBA fulfillment fee ($)

Ad spend (ACOS %) of price

Advanced (optional)

Return rate (%)

Cost per return ($)

Prep/packaging ($)

Other costs ($)

Storage ($/unit)

Closing fee ($)

Net Profit (per unit)

$0.00

Margin0.0%

Break-even ACOS0.0%

Product BSide-by-side

Sale price ($) COGS ($) Referral fee (%) Inbound shipping ($/unit)

FBA fulfillment fee ($)

Ad spend (ACOS %) of price

Advanced (optional)

Return rate (%)

Cost per return ($)

Prep/packaging ($)

Other costs ($)

Storage ($/unit)

Closing fee ($)

Net Profit (per unit)

$0.00

Margin0.0%

Break-even ACOS0.0%

Product CSide-by-side

Sale price ($) COGS ($) Referral fee (%) Inbound shipping ($/unit)

FBA fulfillment fee ($)

Ad spend (ACOS %) of price

Advanced (optional)

Return rate (%)

Cost per return ($)

Prep/packaging ($)

Other costs ($)

Storage ($/unit)

Closing fee ($)

Net Profit (per unit)

$0.00

Margin0.0%

Break-even ACOS0.0%

Comparison Summary

Download or visualize the comparison.

Metric	Product A	Product B	Product C

Net Profit ($) and Margin (%)

Compare mode uses your exact profit logic with the same global toggles (FBA/FBM + Ads mode).

Amazon Referral Fee: typically 8%–15% depending on the category
FBA Fulfillment Fee: based on product size and weight
Monthly Storage Fee: charged per cubic foot of space

Not sure what referral percentage applies to your category? Review the full Amazon referral fee breakdown by category or Amazon referral fee calculator before calculating your final profit.

Selling On Etsy Too?

Calculate Etsy Transaction Fees, Payment Process, Off-Site Ads, and True ROI Before You List.

Use Etsy Profit Calculator

How To Calculate Amazon Profit

Amazon profit is calculated by subtracting all Amazon fees and operating costs from your selling price. This includes referral fees, FBA fulfillment fees, storage fees, advertising spend, product cost, and shipping expenses.

For FBA sellers, fulfillment fees and storage costs are major profit factors. For FBM sellers, shipping and handling costs replace FBA fulfillment fees. In both cases, advertising spend (ACOS) significantly affects net margin.

A healthy Amazon profit margin typically ranges between 20% and 30% after all fees and ads. Break-even ACOS helps sellers understand the maximum percentage of revenue they can spend on advertising before losing money.

Using a profit calculator allows sellers to model different price points, adjust ad spend, and test product costs before launching or restocking inventory.

Amazon Profit Calculator FAQs

What is a good Profit Margin for Amazon?

Most successful private label sellers aim for at least a 20% net profit margin after fees and advertising costs. Lower margins may require higher sales volume to remain sustainable.

How do FBA Fees Affect Profit?

FBA fees include fulfillment and storage costs. These fees vary based on product size and weight and must be included in pricing calculations to avoid unexpected losses.

What is Break-Even ACOS?

Break-even ACOS is the highest advertising cost percentage you can spend before your profit becomes zero. It is calculated by dividing net profit by revenue.

Selling on multiple marketplaces? Try our Etsy Profit Calculator to model transaction fees and offsite ads before listing products.

Etsy Profit Calculator