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Amazon FBA Profit Calculator

Calculate true per-unit profit after every Amazon fee, PPC cost, and return loss. The number you actually keep.

Per-unit inputs

Net profit per unit

$7.79

Healthy

Margin %

25.98%

Profit ÷ sale price

ROI %

97.40%

Profit ÷ COGS — for capital recycling

Cost breakdown

COGS$8.00
Inbound shipping$1.50
FBA fee$5.25
Referral fee$4.50
PPC$2.50
Return loss$0.45
Total cost$22.20

Analysis & insights

On a $29.99 sale price, your net profit per unit: $7.79 (26.0% margin, 97.4% ROI on COGS). Strong economics. Reinvest in PPC scaling or product variations to compound the advantage.

Healthy margin

Strong FBA margin — leaves room for absorbing fee increases and seasonal PPC spikes.

Risk & benchmark gauge

Current band

Healthy

26.0% margin

0255075100
Loss / thinWorkableHealthyPremium

Industry benchmarks

  • Profit per unit$7.79
  • Margin %26.0%
  • ROI on COGS97.4%
  • FBA industry minimum15% margin / 30% ROI
  • Investor target25%+ margin

Key insights

PPC is volatile — budget for 20-30% ACoS

New listings often need 30-50% ACoS to gain rank. Established listings can target 15-25%. Build PPC into your model permanently — it's not optional.

Returns hit hardest at premium-price items

Amazon's standard return rate is 5-10% across categories. Apparel and electronics can hit 20-30%. Even non-defective returns become unsellable and incur removal fees.

Long-term storage fees punish slow movers

Inventory aged 271+ days incurs $6.90/cubic-foot/month surcharges. Plan sell-through so seasonal items leave FBA before the next assessment.

Recommended actions(3)

Lower PPC ACoS to 20% or under

High priority

Negative-keyword pruning, exact-match shifts, and ASIN-targeting campaigns typically cut ACoS 5-10 points over 60 days. Single biggest profit lever for most FBA sellers.

Optimize for the lowest tier of FBA fee category

Medium priority

Going from "Standard size large" to "Standard size medium" (often via packaging reduction) cuts fulfillment fee 15-25%. Worth re-engineering for high-volume products.

Build review velocity in the first 90 days

Medium priority

First-90-day reviews drive BSR (Best Sellers Rank) and conversion. Use Amazon Vine, Subscribe & Save, and email follow-ups (TOS-compliant) to compound.

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This tool is for educational purposes only and does not constitute financial, tax, or investment advice. Consult a qualified financial professional for advice specific to your situation.