2026-06-11 · 11 min read
12 Proven Ways to Reduce Your Amazon FBA Fees
Actionable strategies for cutting Amazon FBA costs, from product dimensions to inventory management, that can significantly improve your per-unit margins.
FBA fees are not fixed. Many sellers pay more than necessary because of product packaging decisions, inventory management habits, and fee categories they have not audited. Here are 12 concrete actions that reduce FBA costs.
1. Measure your product dimensions accurately
Amazon charges FBA fees based on the product's "shipping weight" including packaging. If your product's dimensions are slightly over a size tier threshold, you pay significantly more per unit. Measure your product exactly. If your packaged dimensions are 18.1 x 14.1 x 7.1 inches, find out what fee tier that falls in versus 18 x 14 x 7 inches. Sometimes reducing packaging thickness by half an inch drops you to a lower tier.
2. Reduce product weight and size
For products you control (private label), engineer for the lightest practical weight and smallest practical dimensions. A product that ships at 0.9 lbs pays small standard fees. The same product at 1.1 lbs pays large standard fees, which can be $1 to $2 more per unit depending on dimensions.
3. Check for incorrect fee tier assignments
Amazon sometimes assigns incorrect measurements to products. You can submit a remeasurement request in Seller Central (FBA > FBA Inventory > Products Needs Remeasurement). If Amazon's recorded dimensions are larger than the actual dimensions, a remeasurement corrects the fee tier. Some sellers recover $0.50 to $2.00 per unit this way.
4. Remove slow-moving inventory before aged surcharges kick in
Aged inventory surcharges begin at 181 days. The fee for 271 to 365 days is $1.00 per unit per month. For 365-plus-day inventory, it is $6.90 per cubic foot per month. Review your inventory age monthly and remove anything that has been sitting for 120 days without selling. Removal costs $0.97 per unit for standard size, which is cheaper than another three months of aged inventory fees on slow-moving stock.
5. Maintain healthy inventory levels to avoid low-inventory surcharges
Amazon's low-inventory surcharge of $0.32 to $1.11 per unit applies when your 28-day and 90-day inventory levels fall below Amazon's demand estimate. Keep inventory replenishment plans at least 4 to 6 weeks out to avoid triggering this fee. Use Seller Central's replenishment recommendations.
6. Use Optimized Placement for inbound shipments
Amazon's inbound placement fee charges $0.21 to $1.32 per unit for shipments that go to a single fulfillment center (Amazon then moves the inventory at your expense). Choosing optimized placement, where you send your shipment to multiple Amazon-designated locations, eliminates or reduces this fee. The tradeoff is more complex shipping logistics.
7. Use Multi-Channel Fulfillment rates strategically
If you sell on other channels (your own website, eBay, Walmart), Amazon Multi-Channel Fulfillment lets you fulfill those orders from your Amazon inventory. MCF fees are separate from FBA fees and can be cheaper than running a separate fulfillment operation.
8. Fix stranded inventory within 30 days
Stranded inventory (products with no active listing) still pays storage fees. Every unit that sits stranded for a month costs you storage fees with zero sales potential. Set a weekly reminder to check Inventory > Fix Stranded Inventory and relist or remove any stranded units immediately.
9. Use Amazon Warehousing and Distribution for bulk storage
AWD stores inventory at roughly 40% lower cost than FBA storage. If you buy large quantities and have predictable sales velocity, using AWD as a buffer between your supplier and FBA can reduce monthly storage costs significantly. AWD automatically replenishes your FBA inventory as stock depletes.
10. Calculate break-even before promoting through discounts
Many sellers run deep coupon discounts that eat margin without accounting for how discounts affect referral fees. Referral fees are a percentage of the discounted sale price, so discounting reduces the referral fee. But the combined effect of lower margin plus continued FBA fees can make a deeply discounted promotion unprofitable. Model the full economics before setting a promotion discount level.
11. Review fee changes every quarter
Amazon adjusts FBA fees at least once per year, often in January or April. Subscribe to Amazon Seller News email updates and check the FBA fee page in Seller Central help quarterly. Fee increases that you do not catch immediately erode margins invisibly.
12. Sell through kits and multi-packs to improve per-unit economics
Bundling two units as a multi-pack or creating a complementary kit can reduce the effective FBA fee per unit. If a product costs $3.50 per unit in FBA fees and you create a 2-pack, Amazon charges approximately $4.25 for the 2-pack, reducing the per-unit fee from $3.50 to $2.13. This works best for consumables, commodities, and products where customers regularly need multiples.