Smarter Amazon Inventory Management in 2025: Protect Margins, Avoid Fees, Stay In Stock
Running out of stock costs you sales. Sitting on too much stock drains your profit with storage fees and aged inventory surcharges. In 2025, with rising fulfillment costs, stricter Inventory Performance Index (IPI) expectations, and heavier pressure on both low-stock and excess inventory, inventory management isn’t a back-office task—it’s a growth lever.
Sellers who understand their numbers, forecast demand with intention, and manage restocks strategically:
- Pay less in unnecessary fees
- Keep their best-sellers consistently available
- Maintain higher rankings and better account health
- Scale faster and more profitably
This guide walks you through:
- How Amazon FBA storage and related fees work
- What your IPI score really means (and how to improve it)
- The most common inventory problems and how to fix them
- Practical strategies and tools to keep your inventory under control
Amazon FBA Storage Fees Explained: What You’re Really Paying For
To manage inventory profitably, you first need to know what Amazon actually charges you for.
FBA storage and inventory-related fees are influenced by:
- Product size and weight
- Volume of inventory stored in FBA
- How long inventory sits in fulfillment centers
- How efficiently you move stock in and out
You can review most of these charges in Seller Central: Reports → Fulfillment → Payments & Fee Reports.
Monthly Storage Fees
Amazon charges monthly storage fees for cubic footage your products occupy—not per unit. Fees depend on:
- Season: Jan–Sep (standard), Oct–Dec (peak season)
- Size tier: Standard-size vs Oversize items
Aged Inventory Surcharge
Inventory sitting too long triggers surcharges. Amazon charges when units exceed 181 days in FBA, increasing as inventory ages. Monitor:
- Inventory age buckets
- Sell-through rate
- Excess inventory reports
Low-Inventory-Level Fee
This fee applies when your days of supply fall below Amazon’s internal thresholds. Manage both overstocking and understocking to avoid fees and revenue loss.
Removal and Disposal Fees
Fees apply when you request inventory to be returned or disposed of. Common causes include:
- Overstocked or dead inventory
- Old variations
- Listing or compliance issues
- Frequently returned or damaged products
How to Check Your Inventory Performance Index (IPI) on Amazon
Steps to Find Your IPI
- Log in to Amazon Seller Central
- View your IPI score on the main dashboard
- Click the dropdown to see performance by marketplace
- Go to the IPI Dashboard for detailed insights and recommendations
Why a High IPI Score Matters
- More storage capacity allocated by Amazon
- Fewer storage restrictions
- Flexibility to scale product lines
- Faster delivery and broader coverage
- Better preparation for big sales events
Factors Influencing Your IPI Score
- Excess Inventory
- Sell-Through Rate
- Stranded Inventory
- In-Stock Rate
Common Inventory Issues Amazon Sellers Face
Overstocked Amazon Inventory
- Higher monthly storage fees
- Aged inventory surcharges
- Cash tied up in slow-moving units
- Lower IPI score
Fix Overstocked Inventory
- Monitor sell-through rate
- Use Restock Inventory report
- Check Excess Inventory section regularly
- Use promotions, price reductions, or removal orders
Low Inventory
Low inventory risks lost sales, low-inventory fees, and ranking drops.
Fix Low Inventory
- Review Restock Report
- Monitor Days of Supply
- Maintain buffer stock for top performers
- Account for shipping and supplier delays
- Use inventory alerts and automation
Out-of-Stock (OOS)
Causes loss of Buy Box, rankings, and Best Seller Rank. Recovery may require higher ad spend.
Reduce Stockouts
- Check Restock Inventory report regularly
- Track Days of Supply and restock earlier
- Build lead time buffers
- Consider dual fulfillment (FBA + FBM)
- Prioritize proven high-velocity products
Stranded Inventory
Inventory is in FBA but unavailable due to listing or account issues.
Fix Stranded Inventory
- Go to Inventory → FBA Inventory → Stranded Inventory
- Review affected SKUs
- Use “Fix Listing” options for each SKU
- Check regularly after updates, pricing changes, or variations
Low Sell-Through Rate
Too many units idle → higher surcharges and lower IPI.
Improve Sell-Through Rate
- Monitor Inventory Performance Dashboard
- Run promotions or Lightning Deals
- Optimize listings
- Pause or reduce restocks on slow sellers
- Remove or bundle non-recoverable SKUs
Tips to Effectively Manage Your Amazon Inventory
- Balance stock: Too much = fees, too little = lost sales
- Maintain higher IPI scores
- Win the Buy Box more often
- Grow with less stress
6 Practical Strategies
- Forecast Demand with Real Data: Use recent sales, seasonality, campaigns, and holidays to guide forecasts.
