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//// Financial · HBTax

Amazon Seller Fee Calculator

See exactly what Amazon takes — referral, FBA fulfillment, and monthly storage — before you set your price. Built because resellers deserve to know their real margin.

Where this fits

📦 Business & Seller OpsSeller OSSellersFounders

This tool lives inside Seller OS and is most useful for sellers and founders.

401(k) Limit 2024$23,000
Roth IRA Limit$7,000
S&P 500 Avg Return~10%/yr

Net Profit per Unit

$8.19

32.8% margin · $8.81 to Amazon · breakeven $14.47

Your Product

$
$
units

Package Dimensions (for size tier)

Product + packaging

lbs

Net Profit / Unit

$8.19

32.8% margin

Monthly Profit

$409.71

50 units/mo

Annual Profit

$4,916.50

Profit Margin

32.8%

Healthy

Amazon Fee Total

$8.81

per unit sold

Breakeven Price

$14.47

min to break even

Fee Breakdown

Sale Price$25.00
Referral Fee (15%)−$3.75
FBA Fulfillment (Large Standard)−$4.99
Storage Fee / unit / mo−$0.07
COGS−$8.00
Net Profit / Unit$8.19

Size Tier: Large Standard

0.0556 cu ft · 0.5 lbs · 8×6×2 in

Monthly Revenue

$1,250.00

50 units @ $25.00

Monthly Amazon Fees

$440.29

$8.81/unit × 50

Monthly Profit

$409.71

$4,916.50/year

“Built because resellers deserve to know exactly what Amazon takes.”

— HBTax

Seller playbook · Pricing and fee pressure

This FBA listing has real cushion.

You keep $8.19 per unit on a $25.00 sale after $8.81 in Amazon fees and $8.00 in product cost. Amazon is taking 35.2% of the ticket before ads, and your current price is $10.53 above breakeven.

What To Do Next

Protect the $10.53 price cushion you have above breakeven before layering on ads or promos.

Recheck packaging and dimensions before launch; one size-tier jump can quietly erase your margin.

Once the unit economics are stable, run the full FBA profitability model with PPC and returns to pressure-test scale.

Net margin

32.8%

Healthy Amazon cushion

Amazon take

35.2%

$8.81 per unit before COGS

Breakeven cushion

$10.53

Breakeven price $14.47

Monthly profit

$409.71

$4,916.50 annual run rate

Build Your Seller Stack

The next calculators that usually unlock a better sourcing, pricing, or scaling decision.

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Amazon FBA vs FBM Calculator

Compare Fulfillment by Amazon (FBA) vs self-shipping (FBM) for any product. See size tier, FBA fees, and annual profit difference to find the most profitable fulfillment method.

Try it
1

Sale Price

listed price per unit on Amazon

$25.00

= $25.00

The price at which your product sells on Amazon (before any fees).

Listing price input

2

Referral Fee

Sale Price × Referral Rate (15% for general)

$25.00 × 15%

= $3.75 (15%)

Amazon charges this on every sale regardless of fulfillment method.

Amazon referral fee schedule by category

3

Size Category Determination

Based on weight (lbs) and max dimension (inches)

Weight: 0.5lb · 8×6×2 in

= Large Standard

Size tier determines your FBA fulfillment fee. Smaller = cheaper.

Amazon FBA size-tier rules

4

FBA Fulfillment Fee

Per-unit fee for Large Standard tier

Large Standard · 0.5lb

= $4.99

2024 FBA fee rates. Includes picking, packing, and shipping.

Amazon FBA fulfillment fee table

5

Monthly Storage Fee per Unit

Cubic feet × avg monthly storage rate

0.0556 cu ft × blended monthly rate

= $0.07

Cubic feet = (8×6×2) ÷ 1728 = 0.0556. Rate is blended (Jan–Sep $0.78, Oct–Dec $2.40 per cu ft for standard).

Amazon FBA monthly storage fee schedule

6

Total Amazon Fees

Referral Fee + Fulfillment Fee + Storage Fee

$3.75 + $4.99 + $0.07

= $8.81

Everything Amazon takes from each sale.

Amazon fee stack per unit

7

Cost of Goods (COGS)

unit sourcing or manufacturing cost

$8.00

= $8.00

Your cost to source or manufacture one unit.

Inventory cost input

8

Net Profit per Unit

Sale Price − Total Amazon Fees − COGS

$25.00 − $8.81 − $8.00

= $8.19

Positive — this listing is profitable at current pricing.

Contribution profit per unit

9

Monthly Profit

Net Profit per Unit × Monthly Units

$8.19 × 50 units

= $409.71

This scales per-unit economics by your expected monthly sales volume.

Monthly profit projection

10

Annual Profit

Monthly Profit × 12

$409.71 × 12

= $4,916.50

Annualizing the monthly run rate helps compare this listing against other product opportunities.

Annualized run-rate projection

11

Profit Margin %

(Net Profit per Unit ÷ Sale Price) × 100

($8.19 ÷ $25.00) × 100

= 32.8%

A healthy Amazon margin is typically 20–40%.

Unit margin formula

12

Breakeven Price

COGS ÷ (1 − Referral Rate) + Fulfillment Fee + Storage Fee

$8.00 ÷ (1 − 15%) + $4.99 + $0.07

= $14.47

Price below this and you lose money on every sale.

Price breakeven rearrangement of Amazon fee math

Key insight

Amazon's referral fee is unavoidable regardless of fulfillment. With FBA, the fulfillment fee and storage fee stack on top. The key lever: keep COGS low and price above breakeven. A 20%+ margin is typically considered healthy for Amazon sellers.

#ShowYourWork

Estimates only — Amazon fee structures change. Verify current rates at Seller Central. Storage fees shown are blended averages (Jan–Sep vs Oct–Dec peak rates).

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Compare Fulfillment by Amazon (FBA) vs self-shipping (FBM) for any product. See size tier, FBA fees, and annual profit difference to find the most profitable fulfillment method.

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