Amazon FBA Profit Calculator

Amazon FBA profit = Selling Price − Product Cost − Amazon Referral Fee − FBA Fulfillment Fee − Storage Fee − Advertising Cost − Inbound Shipping − Other Costs. Our calculator does this automatically and adjusts for your returns rate.

Amazon charges a referral fee of 8–15% on most categories. Electronics are typically 8%, while clothing and beauty can be 15–17%. Always check the current Amazon fee schedule for your specific category and marketplace.

A healthy Amazon FBA profit margin is 20–30% after all fees. Margins below 10% are risky — any price change or fee increase can wipe out profit. Aim for at least 15% net margin before scaling.

Returns directly reduce your effective sales volume. At a 10% returns rate, only 90% of your units generate profit. High-return categories like clothing (15–20%) require higher margins to stay profitable.

Break-even price is the minimum selling price to cover all costs with zero profit. It's calculated as: (All fixed per-unit costs) ÷ (1 − Referral Fee Rate). If your break-even is close to your selling price, the business is fragile.

Amazon product ROI = (Net Profit per Unit ÷ Product Cost) × 100. An ROI of 50% means every unit returns half its cost as net profit — invest one currency unit in product cost, get half back as profit (plus the original capital). Most successful sellers target 30–50%+ ROI regardless of marketplace.

Yes — Calcrux auto-detects your region and displays results in your local currency. The calculation logic is identical across marketplaces; always use the fee schedule specific to your Amazon marketplace.

FBA (Fulfilled by Amazon) profit deducts Amazon's pick/pack/ship and storage fees; FBM (Fulfilled by Merchant) profit replaces those with your own shipping and labour costs. FBA is usually higher cost per unit but wins the Buy Box more often and unlocks Prime — FBM gives better margin control on bulky/low-velocity items.

Amazon charges a per-cubic-foot long-term storage fee on inventory aged 365+ days, on top of monthly storage. The exact rate varies by marketplace — check Seller Central for the figure that applies to you. For slow-moving SKUs this can completely erase profit. Aim for at least 6× annual inventory turnover and use the Aged Inventory selector in the Advanced section to model the impact in your region currency.

Most successful FBA sellers target 30–50% ROI on COGS at minimum, with 50–100% considered strong and 100%+ exceptional. ROI below 30% means your money is tied up in inventory for too little return — you'd often earn more leaving it in a high-yield savings account.

Four levers move the most cost: (1) optimise packaging dimensions to drop a size tier — a 1-inch difference can save 30% per unit; (2) accelerate inventory turnover to cut storage; (3) verify your category's referral rate (some categories are mis-classified); (4) enrol low-priced items in FBA Small & Light. Combined, these often recover 10–20% of total fees.

For FBA sellers, shipping to the customer is bundled into the FBA fulfillment fee — Amazon doesn't take an additional cut. For FBM sellers, the referral fee is calculated on the total amount the customer pays including shipping, so Amazon effectively takes a percentage of your shipping revenue.

The math is exact — every formula is derived directly from Amazon's published fee structure. Accuracy depends on the inputs you provide. The most common source of error is using outdated referral rates or under-estimating advertising costs. For maximum accuracy, pull your last 30-day numbers from Seller Central and use real averages, not estimates.

Because the referral fee is a percentage of the selling price, it creates a circular dependency: a higher price means a higher fee, which means an even higher price is needed to cover costs. Solving algebraically: BreakEven = FixedCosts ÷ (1 − ReferralRate). This gives the exact minimum price where revenue equals all costs.

All calculations happen entirely in your browser — no data is stored or sent to a server. To save a snapshot, use your browser's print-to-PDF function or copy individual values. We're working on a dedicated export feature; in the meantime, the URL state will be preserved on reload during the same session.

At minimum, recalculate whenever Amazon updates fee schedules (typically January and June), when your supplier renegotiates pricing, or when you adjust ad spend by more than 20%. High-volume sellers should re-run the model monthly to catch margin drift before it compounds.

Yes. Under Advanced fees you'll find a Storage Season selector. Off-peak (January–September) uses the base per-cubic-foot storage rate; Q4 peak (October–December) applies a ~3.08× multiplier reflecting Amazon's holiday-period rate for standard-size items. Your marketplace's specific rates are converted to your region currency in the results. Recommendation: ship inventory in September if you can, to avoid the spike.

Picking a Product Category in the Setup section automatically populates the Referral Fee % from Amazon's published 2026 schedule (8–17% for most categories, up to 45% for Amazon Device Accessories). You can override the auto-filled rate if your product falls into one of Amazon's tiered subcategories — the help text on each category notes the exception.

When you create an FBA shipment, Amazon recommends splitting inventory across multiple fulfillment centers. If you instead use the single-inbound option (more convenient but more expensive), Amazon charges a per-unit fee that scales with item size — and varies by marketplace. Sending to 4+ Amazon-recommended centers eliminates the fee entirely. The Advanced section lets you model both scenarios, with the cost shown in your region currency.

Amazon introduced this fee in 2024 and raised the threshold to 28 days-of-supply in 2026. When your historical inventory falls below 28 days for a specific FNSKU, Amazon adds a per-unit surcharge that scales with the shortage severity. Exact rates vary by marketplace — check Seller Central for your region. The fix is operational: order larger reorder quantities, or accelerate restock cadence. Use the LILF selector in Advanced fees to model the impact in your region currency.

Net profit is what YOU keep after every cost — Amazon's fees plus your own COGS, ads, and shipping. The payout per unit is what Amazon deposits in your bank: selling price minus only Amazon's cut. They differ because Amazon doesn't know your COGS or ad spend. Tracking both lets you reconcile your monthly payout statement against the model's expectation.

Use the Marketplace selector at the top of the Setup section. Switching it auto-fills the Pro Seller subscription cost in that marketplace's local currency. For other monetary inputs (selling price, COGS, etc.), also switch your region using the global region switcher in the navbar — that recalculates every monetary value at the latest exchange rate so the whole calculator stays consistent.