Every Amazon seller has that moment — the spreadsheet says 30% margin, but somehow the bank account shows red. The culprit is almost always a miscalculated breakeven price.
Your breakeven price is the minimum selling price where you don't lose money after all fees, costs, and overhead. Getting this number wrong means every sale is a loss disguised as revenue.
1. The Complete Cost Formula
Total Cost = COGS + FBA Fees + Referral Fee + Advertising + Storage + Returns + Overhead
Most sellers stop at COGS + FBA + Referral. That's roughly 60% of the true picture. Here's every component:
COGS (Cost of Goods Sold)
Unit cost from supplier + shipping to Amazon + duty/tariffs + prep fees. Use the landed cost, not the ex-works price. A $5 unit at factory might be $7.50 landed after freight and duty.
FBA Fulfillment Fees
Amazon's fee schedule changes every year. For 2026: $3.15-$6.50 for standard sizes, $8.26-$18.40 for oversize, plus $0.20-$1.10 for inbound placement service fees.
Referral Fees
8-20% of the selling price depending on category. Most apparel categories take 17%, electronics 15%, home 15%.
Advertising Spend
This is the most commonly omitted cost. If your ACOS is 25%, that means 25% of every ad-attributed sale goes to ads.
2. How to Calculate Breakeven
Minimum Price = Total Cost ÷ (1 - Desired Margin %)
If your total cost is $10 and you want 30% margin: $10 ÷ 0.70 = $14.28 minimum selling price.
But here's the reality check: most sellers find their "30%" margin product needs to sell at $18.99 just to hit 15% when all costs are included. Use the calculator on ylishi.tools to run this formula with live FBA fee tables.
3. Category-Specific Considerations
Low Price Items (<$10): Margins are razor-thin. FBA fees alone consume 40-60% of the selling price. These products work only at high volume with extremely low COGS.
Mid-Range ($20-$50): The sweet spot for most sellers. FBA fees are 12-20% of price, referral fees are predictable, and there's room for advertising spend.
High Price ($100+): Lower percentage fees but higher absolute risk. Returns cost more, storage costs more, and a few bad reviews can destroy months of PPC investment.
4. When to Recalculate
Your breakeven price isn't a one-time calculation. Recalculate whenever:
- Amazon updates fee schedules (usually January and March)
- You change suppliers or negotiate better pricing
- Shipping costs change (fuel surcharges, peak season rates)
- Your category's referral fee percentage changes
- Your blended ACOS shifts by more than 5%
5. Common Breakeven Mistakes
- Omitting advertising costs: If you plan to run PPC, include an estimated ACOS in your calculation.
- Using list price instead of average selling price: Your breakeven should be based on what you actually sell for, not your list price.
- Forgetting return costs: 5-15% of products get returned. That means you pay FBA fees twice, plus disposal or inspection fees.
- Ignoring storage fees: If a product sits for 6+ months, long-term storage fees can wipe out all profit from the units that sold.
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