Amazon Fees Calculators (2026 Fee Schedule)
Audit every Amazon fee line item on your 2026 statement — from standard FBA fulfillment size tiers and category referral rates to inbound placement, low-inventory, and aged storage surcharges.
Calculators in this Category
FBA Fulfillment Fee Calculator
Lookup exact 2026 FBA fulfillment fees based on item dimensions, shipping weight, and size tier.
Referral Fee Calculator
Check official category referral fee percentages, tiered price breaks, and minimum per-item fees.
Monthly Storage Fee Calculator
Calculate monthly cubic foot storage fees for standard vs Q4 peak holiday shipping seasons.
Inbound Placement Fee Calculator
Model fee differences between minimal split shipments and Amazon-optimized inventory placement.
Low-Inventory-Level Fee Calculator
Audit ASIN supply exposure to determine if historical inventory levels trigger per-unit fees.
Aged Inventory Surcharge Calculator
Calculate long-term storage surcharges for inventory stored in Amazon fulfillment centers over 180 days.
Who Should Use These Tools
FBA Brand Managers
Ensure products are packaged to stay under dimensional weight cutoff thresholds.
Inventory Planners
Minimize inbound placement service fees by optimizing warehouse shipment splits.
E-Commerce Accountants
Reconcile Amazon fee statements against pre-calculated tier expectations.
Product Developers
Design product packaging specifically engineered to lower FBA tier costs.
How to Use These Calculators
Gather Packaging Dimensions
Enter item weight (oz/lbs) and outer packaging dimensions (length, width, height in inches).
Select Product Category
Choose your main Amazon category to automatically apply referral commission percentage rates.
Review Total Fee Stack
Inspect the detailed fee breakdown including fulfillment, referral, storage, and placement fees.
Understanding Amazon FBA Fee Structures in 2026
Amazon seller fees consist of core transactional fees and conditional storage/logistics fees. Understanding how these fees interact prevents unexpected margin erosion.
1. Core Transactional Fees: Referral & Fulfillment
Every Amazon sale triggers a referral fee (typically 8% to 15% depending on category) and, for FBA orders, an FBA fulfillment fee determined by the unit size tier and dimensional weight.
2. Conditional Inventory Fees: Placement, Low-Inventory & Storage
Recent Amazon fee updates introduced inbound placement service fees for single-destination shipments and low-inventory-level fees for ASINs maintaining under 28 days of historical supply.
3. Long-Term Aged Storage Surcharges
Units stored in FBA warehouses over 180 days incur monthly aged inventory surcharges. Proactive inventory liquidation or removal orders prevent compounding fee penalties.
2026 Reference & Rate Breakdown Table
| Fee Type | Calculation Basis | Key Optimization Tip |
|---|---|---|
| Referral Fee | % of total sales price + buyer shipping | Verify contract category in Seller Central |
| Fulfillment Fee | Unit weight + dimensional weight tier | Reduce packaging by 0.5" to drop a size tier |
| Inbound Placement | Per unit fee based on shipment split | Send to 4+ locations to avoid placement fees |
| Low-Inventory Fee | Triggers when supply ratio < 28 days | Maintain consistent FBA inventory coverage |
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Frequently Asked Questions
Common questions regarding Amazon Fees calculations and 2026 fee schedules