For sellers using Fulfillment by Amazon (FBA), monthly storage fees, long-term storage surcharges (LTSF), and storage volume limits can drastically impact operational profitability. Understanding how Amazon calculates inventory health through the Inventory Performance Index (IPI) is essential for optimizing warehousing costs.

1. What is the Inventory Performance Index (IPI)?

The IPI is a dynamic metric ranging from 0 to 1,000 that measures how efficiently you manage FBA inventory. Amazon evaluates four core pillars weekly:

• Excess Inventory Percentage: Units exceeding 90 days of estimated forward supply based on current sales velocity.
• FBA Sell-Through Rate (STR): Units sold and shipped over the past 90 days divided by average inventory on hand.
• Stranded Inventory Percentage: Units stored at FBA fulfillment centers without an active buyable listing.
• FBA In-Stock Rate: Percentage of time popular replenishable ASINs remain in stock.

2. Understanding FBA Storage Fee Structures in India

Amazon charges two primary types of storage fees:

1. Monthly Inventory Storage Fee: Charged per cubic foot based on the average daily volume your inventory occupies in fulfillment centers. Rates are higher during Q4 peak festive seasons (October - December).
2. Aged Inventory Surcharge (LTSF): Assessed monthly on inventory stored for more than 180, 270, and 365 days. These surcharges can exceed the unit manufacturing cost if left unmonitored.

3. Actionable Strategies to Eliminate Excess Inventory

• Run Outlet Deals & Price Markdowns: Enroll qualifying slow-moving ASINs in Amazon Outlet Deals to clear stock without destroying search ranking.
• Create High-Discount Coupons: Offer a significant to a significant digital clip-coupons to accelerate unit velocity on aged batches.
• Automated Removal / Liquidation Orders: Configure automatic removal orders in Seller Central to return units to your warehouse or liquidate them before aged surcharges kick in.

4. Resolving Stranded Inventory Immediately

Stranded inventory incurs full storage fees while generating zero revenue. Common causes and quick fixes:

• Missing Price: Update standard price in Manage Inventory.
• Listing Inactive (Closed): Re-list the SKU and ensure merchant shipping is switched to FBA.
• Brand Authorization Required: Submit brand approval invoices to unlock the listing.

Frequently Asked Questions (FAQs)

How does Reducing Amazon FBA Long-Term Storage Fees & Inventory Age directly impact seller profitability?

By eliminating operational inefficiencies, reducing return rates, ensuring full tax credit recovery, and enhancing catalog search rankings, proper implementation directly widens gross profit margins by a significant to a significant.

Is this process applicable for small sellers with low daily order volume?

Yes. In fact, implementing these best practices early prevents compounding administrative debt as your order volume scales from 10 orders a day to several hundred.

What tools are recommended to automate this workflow?

Utilize Private Crop's suite of free client-side utilities—including automated shipping label croppers, PDF mergers, and GST invoice calculators—to handle repetitive processing securely inside your browser without monthly software subscription costs.

Conclusion

Maintaining an IPI score above 500 helps unlimited storage capacity, exempts you from restrictive restock limits, and keeps warehousing overhead at an absolute minimum.