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Key Takeaways:
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The r/FulfillmentByAmazon thread said it all: "Another day, another Amazon fee." (Source)
On April 2, Amazon announced a 3.5% fuel and logistics surcharge on FBA fulfillment fees, effective April 17. Sellers weren't surprised. They were exhausted. And skeptical: has anyone ever seen a surcharge on Amazon actually go away?
History says no. The 2022 fuel surcharge was framed as temporary too. It became permanent. This one has no end date.
The surcharge is live. It averages $0.17 per unit, stacks on top of January's fee increases, and it will show up in your P&L before most sellers notice it.
Here's how to recalculate before that happens.
Before you recalculate anything, get the scope right.
Here is where it applies:
What is not changing, at least for now:
One critical context point: This surcharge stacks on top of the January 2026 fee increases. If you adjusted your margins in January and assumed you were done, you absorbed a double hit in 2026 without knowing it.
The formula is simple: New Fulfillment Fee = Old Fulfillment Fee × 1.035
Here's what that looks like across size tiers:
|
Size Tier |
Pre-Surcharge Fee |
Surcharge (+3.5%) |
New Total |
|
Small Standard |
~$3.56 |
+$0.12 |
~$3.68 |
|
Large Standard |
~$5.34 |
+$0.19 |
~$5.53 |
|
Large Bulky |
~$9.73 |
+$0.34 |
~$10.07 |
|
Extra-Large |
~$26.50 |
+$0.93 |
~$27.43 |
The bigger issue is volume. An added $0.17 per unit may not sound dramatic, but at 5,000 units per month that is roughly $850 per month, or $10,200 per year.
If you sell across multiple programs, such as FBA and MCF, do not stop at one calculation. Recalculate by channel, because the fee impact may differ.
Now that you know what changed, here’s how to recalculate your margins step by step so you can see exactly which SKUs are still profitable and which need action:
Use Amazon's updated Revenue Calculator, it now reflects the surcharge. Run the Fee and Economics Preview report in Seller Central's Profit Analytics. Export a per-ASIN fee report. Don't estimate from memory or last quarter's spreadsheet.
The standard structure is:
Net Profit = Sale Price − COGS − Referral Fee − FBA Fee − Ad Spend − Returns/Overhead.
Plug the surcharge into the FBA Fee line as 3.5% of whatever that fee currently is. If you've been using a blended "total Amazon costs" figure in your model, break it out now, you can't isolate the impact otherwise.
Sort your catalog by current net margin. Flag anything below 20%, those are the SKUs most likely already pushed into negative territory by the surcharge.
The highest-risk profile: high-volume products with a low average selling price, especially large or bulky items where the surcharge dollar amount is highest.
For every flagged product, run these three:
(a) Absorb the cost and accept a lower margin, is that still viable?
(b) Raise the price, what's the realistic elasticity risk in your category?
(c) Switch to FBM or discontinue, what does the cost comparison actually show?
Don't skip this step. Guessing without the model is how sellers make the wrong call.
Modeling is necessary but not sufficient. Verify the impact against your bookkeeping. The most common mistake here is having Amazon fees recorded as a single "Amazon fees" line, which makes the surcharge invisible in your P&L.
Best practice is to post FBA fees, referral fees, storage, and ad spend as separate line items so any fee change registers immediately in your numbers.
Doing this math once is manageable. Doing it every time Amazon changes a fee, across a full catalog, is where the system breaks down. Two tools worth knowing:
Amazon gives you a few built-in tools to check the fee impact without leaving Seller Central. They're useful for spot-checking individual SKUs and running quick what-if scenarios, but they work best when you already know which products to look at. Some of its key features include:
Webgility helps sellers move beyond one-time fee checks by connecting Amazon order, fee, and accounting data in one place. Instead of manually recalculating margins every time Amazon updates its costs, sellers can see how changing FBA fees affect SKU profitability, reconciliation, and overall financial reporting in real time.
Some of its key features include:
KVM Switches Online cut order processing time by 50% and eliminated reconciliation errors after switching to Webgility, all while selling on Amazon.
Not every product deserves the same response, so the key is knowing when a price increase can protect margin and when a weaker SKU is no longer worth keeping:
Raise prices when:
Be cautious when:
Consider retiring or replacing a SKU when:
FBM can also be a useful bridge for slower-moving items. Before cutting a product completely, compare the true fulfillment cost under both models.
Amazon’s new surcharge may look minor at first, but even small fee changes can quietly eat into your margins over time. That is why sellers cannot afford to keep relying on outdated spreadsheets or rough estimates.
The sooner you recalculate, the sooner you can stop guessing and start making better decisions about pricing, ad spend, and product mix.
Amazon’s native tools can help you understand the fee impact, but staying profitable takes more than a one-time calculation.
With Webgility, you go beyond sync to get clearer visibility into your real numbers, so fee changes show up where they matter most: in your books, reporting, and day-to-day decisions.
No. It applies to FBA fulfillment fees only.
It's the average for a typical item. Your actual impact depends on your size tier. Use the formula: Old FBA Fee × 0.035.
Remote Fulfillment with FBA into Canada, Mexico, and Brazil is also affected. Run a separate calculation for cross-border volume.