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Amazon FBA Inventory Management

Is a bestseller sitting out of stock while slow-moving inventory racks up storage fees? Has a listing become stranded without a clear reason? Has your Buy Box ever quietly disappeared right when a product was in demand?

AMZDUDES provides an end-to-end Amazon FBA Inventory Management Service that keeps your inventory aligned with demand and your fulfillment operations running smoothly. We manage inventory forecasting, replenishment planning, shipment scheduling, stranded inventory, excess stock, and storage optimization to help you avoid costly stockouts, overstocking, and unnecessary FBA fees.

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★★★★★ 4.9 client rating
BUILT AROUND PROFITABILITY

Not just keeping products in stock

By maintaining healthy inventory levels, reducing avoidable storage costs, and ensuring products remain available for sale, we help your FBA business protect revenue, improve cash flow, and support long-term growth.

✓IPI tracked against the 400 threshold, all four sub-metrics
✓Stranded alerts resolved same-day, not in monthly review
✓Aged stock flagged before the 181-day surcharge window
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What’s Included

What’s Included in Amazon FBA Inventory Management Services

Effective Amazon Inventory Management requires more than tracking stock levels. We cover every operational task needed to keep inventory available, costs under control, and sales moving.

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01

Demand forecasting

Sales velocity, seasonality, historical trends, and upcoming demand patterns are tracked at the SKU level. We use this data to estimate future inventory requirements and identify potential stock shortages early. Forecasts are updated as sales patterns change so your replenishment decisions stay aligned with actual demand.

02

Restock planning

Reorder timing and quantities are calculated using days of supply, sales velocity, supplier lead times, and expected demand. We plan replenishment around your inventory position so shipments arrive before stock runs out. This helps reduce stockouts without tying up unnecessary cash in excess inventory.

03

Stranded inventory resolution

Identifying inventory that cannot currently generate sales because of listing, catalog, or fulfillment issues. We investigate the reason units became stranded and coordinate the appropriate resolution to return them to sellable status. This helps prevent sellable inventory from sitting idle while your listings lose sales opportunities.

04

Storage fee optimization

Keeping stock levels inside the range that avoids long-term storage fees, and flagging slow-moving inventory before it hits the aged inventory surcharge windows (181-270 days at standard surcharge rates, 271-365 days at higher rates). Units sitting past these thresholds quietly eat margin every month they go unaddressed.

05

Inventory health monitoring

Ongoing tracking of the metrics Amazon uses to evaluate your FBA performance, centered on your Inventory Performance Index (IPI) score. Amazon calculates IPI on a rolling 13-week window, and the threshold as of 2026 is 400. Drop below it and Amazon restricts your storage capacity. The four sub-metrics that drive it are excess inventory percentage, sell-through rate, stranded inventory percentage, and in-stock rate for replenishable ASINs. We monitor all four continuously, not just the headline number.

06

Removal and liquidation guidance

Reviewing slow-moving, excess, and aging inventory to determine whether continued storage is financially justified. We assess storage costs, sales velocity, product value, and expected recovery before recommending removal or liquidation. This helps you reduce unnecessary carrying costs while recovering as much value as possible from inventory that is unlikely to sell.

Monitored Daily

The Seller Central Tools We Monitor for You

Amazon provides several built-in inventory tools inside Seller Central. Most sellers either don’t check them consistently or don’t act on what they surface in time. We monitor these on your behalf as part of ongoing Amazon inventory management:

FBA Inventory Dashboard

The central view of your sellable inventory, inbound shipments, reserved units, and stranded listings. We check this daily, not weekly.

Restock Recommendations

Amazon’s demand forecasting model that calculates suggested restock quantities and restock-by dates based on projected demand and current days of supply. We use these signals as inputs to our own forecasting process rather than relying on them alone.

Stranded Inventory Alerts

Automated flags for units in fulfillment centers that have no active listing. We resolve these as soon as they appear, not when they surface in a monthly review.

Inventory Health Report

The detailed breakdown of aged inventory, excess stock, sell-through rates, and IPI sub-metrics. We pull this regularly to catch trends before they become surcharges or capacity restrictions.

Two Ways It Costs You

Why Inventory Levels Affect More Than Just Sales

Running Out Of Stock

Immediate damage

Lost sales, lost rank, and a listing that has to rebuild momentum once it’s back in stock.

Overstocking

Slower damage

Cash tied up in unsold inventory, rising long-term storage fees, and a Buy Box that can become harder to win if Amazon reads your inventory position as unreliable.

Left unmanaged long enough, either problem can also drag down your Inventory Performance Index (IPI) score, the metric Amazon uses to evaluate how well a seller manages stock, which in turn can restrict storage limits and selling capacity, or in worse cases, contribute to account-level suspension risk.

Amazon’s Seller Central provides restock recommendations based on demand forecasts, sales velocity, and available inventory to help sellers maintain healthy stock levels. At AMZDUDES, we go a step further by turning those insights into an ongoing inventory management process. We continuously monitor sales trends, days of supply, and demand forecasts to make timely replenishment decisions, helping you avoid stockouts, reduce excess inventory, and keep your products available when customers are ready to buy.

Protecting What You’ve Earned

Stranded Inventory and Buy Box Protection

A stranded listing is inventory that’s sitting in a fulfillment center but not available for sale, often due to a listing error, a category mismatch, or a system issue rather than anything wrong with the product itself. Left unresolved, it quietly costs sales every day it stays that way.

Buy Box eligibility is affected by more than price and reviews. Inconsistent stock levels and inventory performance signals factor into it too. Keeping inventory health monitored and stranded listings resolved quickly protects the Buy Box position you’ve already earned, rather than losing it to something fixable.

IPI sub-metrics we track Threshold 400
01 Excess inventory percentage
02 Sell-through rate
03 Stranded inventory percentage
04 In-stock rate for replenishable ASINs
Calculated by Amazon on a rolling 13-week window.
Peak Season

Prime Day and Q4: When Inventory Mistakes Cost the Most

Peak selling periods amplify every inventory problem. A stockout during Prime Day doesn’t just lose that day’s sales, it drops your listing’s rank at exactly the moment competitors are gaining momentum. Overstocking ahead of Q4 is equally dangerous: Amazon’s storage rates spike during the holiday quarter, and units that don’t sell through quickly enough roll into aged inventory surcharges in January.

We start peak-season inventory planning months ahead, not weeks. That means adjusting restock quantities and timing based on projected demand lifts, securing inbound shipment slots before fulfillment centers hit capacity limits, and building a clear plan for post-season excess so slow-moving Q4 stock doesn’t sit in warehouses racking up surcharges into Q1.

Demand vs. restock timing
Units sold per month, illustrative
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Peak demand
Restock window
Baseline
Proof

Results From Inventory We Manage

Grocery brand inventory recovery case study
$197,000
Grocery brand · annual revenue recovered

When a Grocery brand came to us, their catalog had been fragmented by unauthorized resellers who had created duplicate listings under their own UPCs. Inventory was scattered across competing ASINs, stranded listings were leaking sales daily, and the brand had lost control of its own product catalog. Through Brand Registry workflows, listing consolidation, and ongoing catalog monitoring, we recovered approximately $197,000 in annual revenue that had been leaking to third-party sellers, and restored a clean, consolidated catalog where inventory could be tracked and managed accurately.

 Food and beverage inventory growth case study
65%
Food & Beverage brand · year-over-year growth

A Food & Beverage brand we manage saw 65 percent year-over-year growth through a strategy that depended directly on inventory reliability: Subscribe & Save and multi-pack bundles. Both require consistent in-stock rates to work, since a stockout on a Subscribe & Save product doesn’t just lose one order, it breaks the subscription cycle and risks losing the customer entirely. Inventory forecasting tuned to recurring demand patterns kept that from happening.
Comparison

AMZDUDES vs Other Inventory Management Providers

AMZDUDES Typical Provider
IPI monitoring All four sub-metrics tracked continuously against the 400 threshold IPI checked occasionally or only when problems surface
Stranded inventory Resolved same-day when alerts fire Flagged in monthly reporting, resolved reactively
Aged inventory action Proactive removal or liquidation before 181-day surcharge window Addressed after surcharges have already hit
Seller Central tools FBA Dashboard, Restock Recommendations, Stranded Alerts, and Inventory Health Report monitored daily Seller checks tools themselves or gets a monthly summary
Peak season planning Forecasting and shipment scheduling starts months ahead of Prime Day and Q4 Reactive restocking as demand spikes
Forecasting approach Per-SKU velocity, seasonality, and days-of-supply modeling Category-level estimates or Amazon’s default recommendations only
Team structure Dedicated team per account, 50+ specialists across the agency Shared account manager or software-only solution
Investment

What Affects FBA Inventory Management Pricing

Inventory management pricing scales with SKU count and how frequently your catalog turns over, not a flat rate. What typically affects scope:

01 Number of active SKUs and seasonal variation in demand
02 Current state of your inventory, since a catalog with existing stranded listings or storage fee issues needs more upfront work than a clean one
03 Whether this is bundled with broader FBA or account management, or handled standalone

We scope this on a call, since a 15-SKU catalog with steady demand and a 150-SKU catalog with heavy seasonality are not the same job.

FAQ

Frequently Asked Questions

Demand forecasting, restock planning, stranded inventory resolution, storage fee optimization, IPI score monitoring across all four sub-metrics, aged inventory management, and guidance on removing or liquidating slow-moving stock.

Effective inventory management in Amazon FBA helps you maintain the right stock levels, prevent costly stockouts and overstocking, reduce storage fees, and keep products available for customers. A well-managed inventory strategy also improves cash flow, protects your IPI score, and supports consistent sales growth.

By forecasting restock timing and quantities off actual sales velocity, seasonality, and days of supply, rather than a flat reorder rule, keeping inventory levels inside the range that avoids both problems.

Yes. We identify why a listing is stranded and resolve it, whether that’s a category mismatch, a listing error, or another fixable issue keeping inventory unavailable for sale. We monitor Amazon’s Stranded Inventory Alerts daily so these get caught immediately.

Yes. Buy Box eligibility factors in more than price and reviews, and inconsistent stock levels or inventory performance signals can affect it.

The Inventory Performance Index is Amazon’s score for how well you manage stock, calculated on a rolling 13-week window. The threshold is 400 as of 2026. Drop below it and Amazon restricts your storage capacity. The four sub-metrics that drive it are excess inventory percentage, sell-through rate, stranded inventory percentage, and in-stock rate for replenishable ASINs.

Amazon charges surcharges on units that have been in FBA for 181-270 days at one rate, and units past 271-365 days at a higher rate. These fees are separate from standard monthly storage fees and can quietly eat into margin if slow-moving stock isn’t addressed in time.

We start months ahead, adjusting restock quantities based on projected demand lifts, securing inbound shipment slots before fulfillment centers hit capacity limits, and planning post-season excess removal so slow-moving stock doesn’t carry surcharges into the following quarter.

We monitor the FBA Inventory Dashboard, Restock Recommendations, Stranded Inventory Alerts, and the Inventory Health Report on your behalf, daily rather than periodically.

Amazon Inventory Management focuses specifically on inventory: forecasting, restocking, and storage cost control. Full FBA management adds reimbursement recovery, shipment logistics, listings, and PPC on top of that.

It matters most once you have enough SKUs or seasonal variation that manual tracking becomes unreliable. Smaller catalogs can sometimes manage this themselves, and we’ll say so honestly on a call.

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Growth · Commitment · Gratitude

Ready to Stop Losing Money to Inventory Guesswork?

At AMZDUDES, we manage the forecasting, restocking, and storage decisions that keep your inventory lean, in stock, and working for your rankings instead of against them.

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