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Amazon FBA Profit Calculator

Amazon's fees add up fast — between the referral fee, FBA fulfillment, and storage, they often eat 30–45% of your selling price. This calculator shows what you actually keep per unit. Tip: always run these numbers before you source a product, not after.

Last Updated: June 2026

Reviewed for current platform fees and pricing rules.

Who this calculator helps

  • Private-label sellers vetting a product idea before placing a supplier order.
  • Online arbitrage and wholesale sellers running quick deal-by-deal profitability checks.
  • Existing FBA sellers auditing why a SKU's profit dropped after FBA fee changes.
  • Sellers deciding between FBA and FBM (merchant-fulfilled) for the same product.
  • Brands comparing Amazon's per-unit economics against Shopify or their own DTC site.

Most categories are 15%; range is 8–20% by category. Minimum $0.30 per item.

Starting estimates based on 2026 rates — confirm your exact fee in Amazon Seller Central.

Other costs (optional)

Net profit per unit

$12.51

Profit margin

41.72%

High Profit Potential

ROI

156.39%

Total Amazon fees

$9.48

Referral $4.50 + FBA $4.98

Real Profit Snapshot

After platform fees

Estimated monthly profit

$625.57

Verdict: Healthy margin — this product has strong room to scale with ads or volume.

All calculations are estimates based on average platform fees. Real profits may vary depending on category, ads, and shipping.

Free worksheet for your next step

Use this worksheet to plan FBA fees, ads, and product profitability.

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    Amazon FBA Profit Worksheet

    A worksheet for estimating product profit after inventory and FBA costs.

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  • Cheat SheetAmazon FBA

    Amazon FBA Fee Cheat Sheet

    A quick-reference guide to understanding common Amazon FBA fees and profit calculations.

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  • WorkbookBusiness Planning

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    Track income, expenses, fees, product costs, profit, and estimated tax set-aside in one beginner-friendly workbook.

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How to use this calculator

  1. Enter your numbers in each field above — the calculator updates instantly as you type, so there's nothing to submit.
  2. Use your real figures when you have them, or sensible estimates while you're planning. If a field doesn't apply, leave it at zero.
  3. Compare the results, then change one input at a time to see how each lever (price, cost, fees, volume) moves the outcome.

When to use this calculator

  • Before sending a purchase order to a supplier — landed cost and fee structure should clear your target margin and ROI.
  • When Amazon updates referral, fulfillment, or storage fees (which happens every January and often mid-year).
  • Before running a Lightning Deal or Coupon — discounts compress margin fast on already-thin products.
  • When considering Q4 — storage fees can be 2–3× higher Oct–Dec for slow-moving inventory.
  • When comparing a wholesale offer against a private-label SKU at the same selling price.

Formula

Referral fee = Selling price × category rate (most categories 15%, minimum $0.30) · Net profit = Selling price − product cost − referral fee − fulfillment fee − other costs · Profit margin (%) = (Net profit ÷ Selling price) × 100 · ROI (%) = (Net profit ÷ your cost to get the unit to Amazon) × 100

Worked example

You sell an item for $29.99. Product cost $7.00, inbound shipping $1.00/unit, large standard size.

  1. Referral fee (15%): 29.99 × 0.15 = $4.50
  2. FBA fulfillment fee (large standard): $4.98
  3. Total Amazon fees: 4.50 + 4.98 = $9.48
  4. Total cost: 7.00 + 1.00 + 9.48 = $17.48
  5. Net profit: 29.99 − 17.48 = $12.51
  6. Profit margin: 12.51 ÷ 29.99 × 100 ≈ 41.7%
  7. ROI: 12.51 ÷ (7.00 + 1.00) × 100 ≈ 156%

Answer: $12.51 profit · 41.7% margin · 156% ROI

More worked examples

Wholesale flip: sell $19.99, product cost $5, inbound $0.50, small standard FBA fee $3.65, 15% referral.

  1. Referral = 19.99 × 0.15 = $3.00
  2. FBA fulfillment = $3.65
  3. Total cost = 5 + 0.50 + 3.00 + 3.65 = $12.15
  4. Net profit = 19.99 − 12.15 = $7.84
  5. Margin = 7.84 ÷ 19.99 × 100 ≈ 39.2%
  6. ROI = 7.84 ÷ (5 + 0.50) × 100 ≈ 142.5%

Answer: $7.84 profit · ~39% margin · ~142% ROI — strong wholesale economics.

Oversize private-label: sell $49.99, product $12, inbound $3, oversize FBA fulfillment $11.50, 15% referral, $2 PPC per sale.

  1. Referral = 49.99 × 0.15 = $7.50
  2. FBA fulfillment = $11.50
  3. Total cost = 12 + 3 + 7.50 + 11.50 + 2 = $36.00
  4. Net profit = 49.99 − 36.00 = $13.99
  5. Margin = 13.99 ÷ 49.99 × 100 ≈ 28%
  6. ROI = 13.99 ÷ (12 + 3) × 100 ≈ 93.3%

Answer: $13.99 profit · ~28% margin · ~93% ROI — acceptable once ads are included.

Thin-margin price test: same standard $29.99 example but priced down to $19.99 to chase rank.

  1. Referral = 19.99 × 0.15 = $3.00
  2. FBA fulfillment = $4.98
  3. Total cost = 7 + 1 + 3.00 + 4.98 = $15.98
  4. Net profit = 19.99 − 15.98 = $4.01
  5. Margin ≈ 20% · ROI ≈ 50%

Answer: $4.01 profit — a $10 price drop turns a winner into a marginal SKU; rank chase must pay back in volume.

How it works

Amazon charges a referral fee (a percentage of the sale) plus a flat FBA fulfillment fee per unit based on size and weight. Add your product cost, inbound shipping, storage, and any ads, subtract it all from your selling price, and what's left is your profit per unit.

A healthy FBA product looks like the example above — but drop that same item's price to $19.99 and the same costs leave just ~$5.50 profit, which is why pricing and product cost matter so much.

Expert tips

  • Aim for at least 25–30% margin and 75–100% ROI on a new private-label product so there's room for PPC, storage, and refunds.
  • Use Seller Central's FBA revenue calculator to pull the exact per-unit fulfillment fee before you finalize your model — fees change by tier.
  • Budget 8–15% of revenue for Amazon PPC on a new launch; mature products often run 3–8% TACoS.
  • Add a 3–5% return reserve to product cost on apparel, electronics, and fragile categories.
  • Model both summer and Q4 storage rates — a product that's profitable in March can be a loss leader in November if it sits.

How to interpret your results

  • Dollar values are shown per sale, per order, or per item unless a result is explicitly labelled monthly, weekly, or daily.
  • Percentages (margin, ROI, conversion rate) are easier to compare across products and price points than raw dollars — use them when you benchmark.
  • A positive result means you're ahead after the costs and fees you entered. A negative result means the current numbers don't work — change a lever (raise price, cut a cost, lower ad spend) and recalculate.
  • Treat the output as a planning estimate, not a guarantee. Fees, taxes, and conversion rates shift over time — re-run the numbers whenever a key input changes.

Limitations

  • Doesn't include monthly Professional plan ($39.99), long-term storage fees, removal/disposal fees, or inbound placement fees.
  • Doesn't separate Amazon's recently introduced low-inventory-level and inbound placement service fees — add them to 'other costs' if relevant.
  • Returns and refund processing fees aren't modeled per unit — pad product cost by your category's typical return rate.
  • Currency conversion fees on international marketplaces aren't included.
  • Doesn't model TACoS, ACoS or sponsored ad campaigns — pair with the Amazon ACoS Calculator for ad ROI.

Common mistakes

  • Forgetting the FBA fulfillment fee is per unit and based on size/weight, not price.
  • Ignoring storage fees, which spike 2–3x in the Oct–Dec peak.
  • Leaving out advertising — most FBA products need PPC to sell.
  • Not factoring the $39.99/month Professional plan across your unit volume.

Related Guides

Go deeper with plain-English guides on the same topic.

FAQ

What fees does Amazon FBA charge?
A referral fee (usually 15% of the sale), a per-unit FBA fulfillment fee based on size and weight, monthly storage fees, and a $39.99/month Professional selling plan.
How much is the Amazon referral fee?
Most categories are 15% of the total sale price, with a $0.30 minimum. It ranges from about 8% to 20% depending on category.
How much is the FBA fulfillment fee?
It depends on size and weight, starting around $3.30 for small standard items and rising into the double digits for oversize products.
What's a good FBA profit margin?
Many sellers aim for 25–35% net margin and a strong ROI. See our guide "What Is a Good Profit Margin?" at /guides/what-is-a-good-profit-margin.
Are there hidden FBA fees?
Yes — inbound placement fees, a low-inventory-level fee, aged-inventory surcharges, and a fuel surcharge can all apply. Always check Seller Central.

Why trust this calculator?

This tool uses standard mathematical formulas and commonly accepted calculation methods, shown openly in the Formula section above so you can verify the math yourself. Results are estimates based on the information you enter and do not account for every individual circumstance. For important financial, tax, legal, medical, or business decisions, please double-check with a qualified professional before acting on the numbers.

Keep going

One calculator rarely tells the full story. Pair this one with a related tool below to pressure-test your numbers from a different angle, or browse Work & Money Calculators for more in the same category.

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