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Free Amazon FBA profit calculator. Estimate net profit per unit, margin %, ROI, and break-even price after referral fees, FBA fulfillment, storage, PPC, inbound, prep, and returns. Use with the Amazon seller fee calculator for fee details.
Last updated: May 24, 2026
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Net Profit / Unit
$9.22
Profit Margin
21.5%
Revenue / Unit
$42.99
Total Fees / Unit
$13.92
Total Cost / Unit
$33.77
ROI on Unit Cost
27.3%
Break-Even Price
$31.6
Performance: Good
Healthy FBA unit economics. Scale in measured steps while monitoring return rate and TACoS.
Amazon FBA Tips:
Answers: is my FBA product profitable per unit, what margin after PPC, and minimum price to break even?
Default $9.22/unit (21.5% margin, Good).
$13.92 Amazon fees + $19.85 COGS/logistics/PPC per unit.
Default $31.6 — $11.39 cushion vs $42.99 list price before overhead.
Default SKU: $42.99 price · $13.20 COGS · 15% referral · $5.45 FBA · $120 storage ÷ 400 units/mo · $4.60 PPC → net $9.22/unit (21.5% margin), break-even $31.6, ~$3,688.76/mo.
Net / unit
$9.22
Fees / unit
$13.92
Total cost / unit
$33.77
ROI
27.3%
| Category | Typical referral | Notes |
|---|---|---|
| Most consumer goods | 15% | Default in calculator — verify in Seller Central |
| Electronics accessories | 15% | Some subcategories differ |
| Apparel | 17% | Category-specific; update referral % field |
| Amazon Device Accessories | 45% | High referral — model explicitly |
| Books / media | 15% | Closing fee may apply on media |
| Margin | Label | Action |
|---|---|---|
| < 0% | Loss | Raise price, cut PPC, or reduce COGS before reordering inventory |
| 0 – 7.9% | Low | Thin margin — one fee or ACOS spike can erase profit |
| 8 – 14.9% | Fair | Workable for proven SKUs — optimize before scaling ads |
| 15 – 24.9% | Good | Default lands here — typical FBA target zone |
| ≥ 25% | Excellent | Strong unit economics — scale with inventory discipline |
| Layer | Includes | Default example |
|---|---|---|
| Amazon fees | Referral %, FBA fulfillment $, storage/unit, returns reserve | $13.92/unit |
| Product & logistics | COGS, inbound to FBA, prep/label | $15.25/unit |
| Growth cost | PPC cost per unit sold | $4.60/unit |
| Plan fee | $0.99/unit Individual plan only | $0 Professional |
FBA profit is not list price minus COGS. Amazon fees scale with price; PPC and storage scale with operations. This model stacks every per-unit line item so margin matches Seller Central reality more closely.
Amazon fees / unit
COGS + inbound + prep + PPC = $13.20 + $1.40 + $0.65 + $4.60 = $19.85Total cost = $19.85 + $13.92 = $33.77Net = $42.99 − $33.77 = $9.22Break-even = $25.60 ÷ (1 − 0.15 − 0.04) = $31.621.5% margin · 27.3% ROI · break-even $31.6. Baseline for comparing PPC and inventory scenarios below.
Margin 15.9% — $2.40 less per unit from +$2.40 ads. At 400 units, ~$960 less profit/month vs default.
Margin 26.3% (Excellent) — shows upside when TACoS is controlled; still include some ad cost for ranking maintenance.
Storage/unit doubles to $0.6 — net drops $0.30/unit vs 400-unit pace. Overstock erodes margin without changing list price.
$0.99/unit plan cost embedded — compare to Professional + $39.99/mo fixed outside this per-unit view.
Below break-even $31.6 — 400 units/mo loses ~$1,168. Price wars without cost cuts destroy FBA economics.
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