Amazon FBA Profit Calculator 2026
Estimate net margin using the real 2026 rate card: five size tiers including the new Small Bulky, three price bands, the fuel surcharge, and holiday peak fulfillment fees. Free, no sign-up required.
What does Amazon FBA actually cost in 2026?
Your estimated net profit is selling price minus referral fee (about 8-17%, some categories tiered by price), FBA fulfillment fee (set by size tier, shipping weight, and price band), a 3.5% fuel surcharge on the fulfillment fee (effective April 17, 2026), storage (standard-size: about $0.78/cu ft January-September, $2.40/cu ft October-December), a separate holiday peak fulfillment fee increase from October 15 through January 14, and your TACoS ad spend. As of January 15, 2026, there are five size tiers, Small Standard, Large Standard, the new Small Bulky, Large Bulky, and Extra-Large, each with its own rate table. These are reference figures, always verify your specific product fees in Amazon’s Revenue Calculator.
Estimate Amazon FBA profit per unit, net margin, ROI and break-even price using the published 2026 US fee schedules. Compare non-peak and holiday fulfillment rates, the 3.5% fuel and logistics surcharge, and storage costs based on product size and calendar month. Enter your selling price, landed cost, product dimensions, weight, category and advertising spend to evaluate your product economics.
Product Economics
Profit Audit Results
Enter your numbers and run the audit.
A proprietary planning score based on the assumptions entered above. Not an Amazon metric.
| Price | Margin | Profit / Unit |
|---|
Peak Fee Impact (Oct 15, 2026 – Jan 14, 2027)
How to Use This Calculator
Simple mode: four inputs, instant result. Deep Audit: adds dimensions, season, and penalty fees.
Pick Category and Enter Price
Category sets your referral fee. Clothing and Beauty are tiered by price rather than one flat percentage, this calculator applies that automatically.
Enter Weight and TACoS
Packaged unit weight helps set your size tier and fulfillment fee. TACoS is your total ad spend divided by total revenue, enter 0 if you’re not advertising.
Switch to Deep Audit (Optional)
Add package dimensions for accurate classification across all five size tiers, choose non-peak or holiday peak fulfillment, set the storage month, and include placement, low inventory, and return costs.
Read All Outputs
Net profit per unit, break-even price, monthly profit estimate, the pricing heatmap, and the Peak Fee Impact module showing total seasonal cost.
Verify in Seller Central
This calculator uses the published 2026 rate structure. For your specific ASIN’s exact fees, always confirm in Amazon’s Revenue Calculator before finalizing sourcing decisions.
The 2026 Amazon FBA Fee Structure
Amazon restructured FBA fulfillment fees effective January 15, 2026, adding three price bands (under $10, $10 to $50, and over $50) on top of size and weight tiers, with an average increase reported around $0.08 per unit for standard-size items in the $10-$50 band. On April 17, 2026, a 3.5% fuel and logistics surcharge was added on top of every FBA fulfillment fee, later extended to Multi-Channel Fulfillment and Buy with Prime. The surcharge is calculated on the fulfillment fee, not the sale price.
🆕 Small Bulky: A Genuine Win for Mid-Size Products
January 15, 2026 also introduced a new Small Bulky tier, carved out of what used to be one large Large Bulky category. Products up to 50 lb and roughly 37 x 28 x 20 inches now qualify for Small Bulky at a materially lower rate than Large Bulky, about $7.55 versus $9.35 in the $10-$50 band, with both tiers adding the same $0.38 per pound above the first pound. A product that previously qualified only for Large Bulky can now fall into the cheaper tier with no relisting required. Worth checking your bulky SKUs against the new size limits.
⚠️ “Temporary” Surcharge, What History Suggests
Amazon described the April 2026 fuel surcharge as temporary but has not published an end date. A prior fuel surcharge was also framed as temporary and was eventually absorbed into base FBA rates. Sellers should plan for this surcharge to remain in place for the foreseeable future and model unit economics accordingly.
| Size Tier | Limits | Billed On | $10-$50 Band, Non-Peak |
|---|---|---|---|
| Small Standard | Up to 16 oz, up to 15 x 12 x 0.75 in | Actual weight only | $3.32-$3.96 |
| Large Standard | Up to 20 lb, up to 18 x 14 x 8 in | Greater of actual or dimensional weight | $3.73-$6.67 up to 3 lb, then $6.97 plus $0.08 per 4 oz above 3 lb |
| Small Bulky (new 2026) | Up to 50 lb, up to 37 x 28 x 20 in | Greater of actual or dimensional weight | $7.55, plus $0.38 per lb above 1 lb |
| Large Bulky | Up to 50 lb, up to 59 x 33 x 33 in, length plus girth up to 130 in | Greater of actual or dimensional weight | $9.35, plus $0.38 per lb above 1 lb |
| Extra-Large | Beyond Large Bulky limits, weight bands to 150+ lb | Greater of actual/dimensional under 150 lb; actual weight at 150 lb+ | $26.33, plus $0.38 per lb above 1 lb up to 50 lb; heavier bands use separate rates |
Holiday Peak Fulfillment Fees and Q4 Storage Are Two Separate Increases
These are two charges on two different calendars. Q4 storage pricing starts October 1 and runs through December: $2.40 per cubic foot for standard-size and $1.40 for Small Bulky, Large Bulky and Extra-Large, versus $0.78 and $0.56 from January to September. Holiday peak fulfillment fees apply to units that ship from October 15, 2026 through January 14, 2027, at separately published rates that depend on size tier, weight band and price band, with the 3.5% fuel surcharge applied on top. That means October 1-14 has Q4 storage with non-peak fulfillment, and January 1-14 has peak fulfillment with standard storage. Overstocking ahead of the holidays combines both increases.
FBA Prep and Labeling Services Ended January 1, 2026
Amazon discontinued its FBA Prep and Item Labeling service in the US on January 1, 2026. Inventory now must arrive fully prepped and labeled, or sellers need to route it through a third-party prep center or a freight forwarder before it reaches an Amazon fulfillment center. Budget a third-party prep cost, commonly reported in the $0.35 to $1.00 or more per unit range depending on complexity, into your Landed Cost field above if this applies to you.
TACoS, Why It Belongs in Every FBA Calculation
TACoS (Total Advertising Cost of Sale) is your total ad spend divided by total revenue. Leaving it out produces a margin figure that doesn’t reflect what you actually take home. TACoS varies a great deal by category competitiveness and listing maturity, this calculator lets you test your own assumption rather than presenting one figure as an industry standard.
Why Returns Belong in Your Profit Math Too
Amazon generally refunds the referral fee on a returned order, but the FBA fulfillment fee, any fuel surcharge paid, and your inbound shipping cost are typically not recovered. Use the Return / Refund Rate field in Deep Audit mode to see an estimated reserve for this cost rather than discovering it in a monthly statement.
Size Tier Detection Needs Both Dimensions and Weight
A product only qualifies for a smaller, cheaper tier if it fits inside both that tier’s dimension limits and its weight limit, missing either one bumps it to the next tier up. Small differences in packaging can push a product from Small Standard into Large Standard, or from Large Standard into Small Bulky, adding real dollars per unit. Enable Deep Audit mode above and enter your package dimensions to detect your tier automatically across all five 2026 size tiers.
📦 SIPP and Overmax
For bulky items, Amazon’s SIPP (Ships in Product Packaging) program can avoid a reported $1.51 to $4.04 per unit surcharge that otherwise applies to non-enrolled accounts. Separately, Extra-Large items up to 150 lb that exceed 96 inches on their longest side, or 130 inches in length plus girth, are classified Overmax and carry a reported $17 to $25 per unit surcharge on top of the standard fee. Both are available as checkboxes in Deep Audit mode once the relevant size tier is detected.
FAQs – Amazon FBA Profit Calculator
What are Amazon FBA fees in 2026?
What is Small Bulky and how is it different from Large Bulky?
What is the 2026 Amazon FBA fuel surcharge?
Is the holiday peak fulfillment fee the same as Q4 storage?
When do Amazon FBA peak fees start and end in 2026?
Are Amazon FBA peak fees charged based on the order date or shipping date?
How much do Amazon FBA peak fees add per unit?
Does Amazon storage pricing change on October 15?
How does Amazon calculate dimensional weight for FBA fees?
What is the difference between the Amazon Revenue Calculator and an FBA profit calculator?
Does the Low Inventory Level Fee apply to Small Bulky and Large Bulky products?
Does Amazon still prep and label FBA inventory in 2026?
How do returns affect Amazon FBA profit?
How the Fee Calculations in This Tool Are Built
Size tier classification checks both package dimensions and shipping weight against each 2026 tier’s published limits, a product only qualifies for a tier if it fits within that tier’s dimension limits and weight limit together. Billed weight follows Amazon’s published rule: Small Standard bills on actual weight only; Large Standard, Small Bulky, Large Bulky, and Extra-Large under 150 lb bill on the greater of actual or dimensional weight (length times width times height divided by 139, with the two shorter sides treated as at least 2 inches); Extra-Large at 150 lb or more bills on actual weight only.
Fulfillment fees are looked up in Amazon’s published 2026 US rate tables for standard, non-apparel, non-dangerous-goods products, by size tier, shipping-weight band and price band (under $10, $10-$50 with exactly $10 and $50 included, over $50), with separate tables for non-peak (January 15 to October 14) and peak (October 15 to January 14). Weight bands are not interpolated, and peak rates are never derived from non-peak rates. The 3.5% fuel surcharge (effective April 17, 2026) is calculated once on the published base fee and rounded to the cent. Peak Fee Impact compares the two totals for your product. Storage is modeled separately: you choose the billing month (January-September or October-December) and the average units held (storage is excluded until you enter it), and the rate depends on size tier (standard-size versus Small Bulky, Large Bulky and Extra-Large).
Referral fee is tiered by selling price for Clothing and Beauty, matching Amazon’s published category-specific breakpoints, and a flat published percentage for other categories. The Return / Refund Rate field models an expected-value reserve (return rate times unrecovered per-unit cost) rather than a fixed fee, since Amazon does not publish one flat returns fee.
This is a free educational reference tool. Results are planning estimates, not guaranteed fee calculations. Actual fees vary by ASIN, account history, packaging compliance recorded in Seller Central, and account-specific conditions. Always verify in Amazon’s Revenue Calculator before sourcing decisions. Not affiliated with or endorsed by Amazon.
Built and checked by R.K., Creator and Business Economics Analyst, Ultimate Info Guide