Stop running out of stock. Forecast Amazon FBA inventory.
Epinium's Amazon FBA forecast tool predicts demand per ASIN and marketplace, calculates reorder points automatically, and keeps your FBA inventory at the right level — so you never lose sales to stockouts or waste cash on overstock.
Free to start · No credit card · Forecast ready in minutes
What our clients say
Amazon FBA inventory management, powered by AI
From demand forecasting to reorder alerts to storage fee optimisation, Epinium gives you the intelligence to keep your FBA inventory exactly where it needs to be — not too little, not too much.
Forecast demand. Never stock out again.
Epinium connects to your Amazon Selling Partner API, ingests your real sales and inventory data, and builds a continuous demand model per ASIN and marketplace — so your replenishment decisions are always based on what's actually happening in your account.
Predict FBA demand before it happens
- ASIN-level demand modellingEpinium builds an individual demand model for every active ASIN — accounting for sales velocity, historical seasonality, current trend direction, and external signals like promotions or ranking changes.
- Seasonal uplift calculationAutomatically detect and apply seasonal multipliers to your forecast — so your Q4 or Prime Day replenishment plans account for the demand spikes that regularly catch underprepared sellers off guard.
- Multi-marketplace consolidated viewSee inventory levels and demand forecasts aggregated across all your active Amazon marketplaces — EU and US — in a single dashboard so nothing falls through the cracks.
Build replenishment plans that actually work
- Days of cover calculationSee exactly how many days of stock you have remaining per ASIN based on current velocity — so you know at a glance which products need urgent replenishment and which have comfortable runway.
- Supplier lead time integrationFactor your actual supplier lead times into every replenishment calculation so the system tells you not just when to reorder, but when to place the purchase order to arrive on time.
- Reorder quantity optimisationCalculate the optimal reorder quantity per ASIN — balancing unit economics, shipping costs, and FBA storage fees — so every restocking decision maximises margin, not just stock availability.
Avoid the costs hiding in your FBA account
- Long-term storage fee preventionIdentify which ASINs are accumulating aged inventory and will trigger long-term storage fees before Amazon charges you — giving you time to remove, liquidate, or discount stock to move it out.
- Stockout impact analysisSee the estimated revenue and ranking impact of each potential stockout — so you can prioritise replenishment spend on the ASINs where running out of stock costs you the most.
- Overstock alert and actionGet early warnings when inventory projections show excess stock building up so you can slow purchasing, run promotions to accelerate sell-through, or plan FBA removal before storage costs compound.
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Get it →With a vast catalog and little time, we trusted Epinium to optimize our listings. This led to increased organic sales and improved advertising performance through AI, allowing us to focus on growing our business.
Alberto Feria
CEO, Alfa Holding
With Epinium, we are able to save a lot of time editing our clients' listings thanks to its bulk editor and Artificial Intelligence. We are able to take care of their strategies.
Miriam Larrosa
CEO, Roicos
Our expectations were certainly exceeded. Everything is just so well thought out, and snappy. Their support team is excellent too!
Neus Dominguez
Marketplace Manager, Labbox
We use Epinium every day to monitor the status of all our ASINs across all marketplaces and improve our SEO very productively. An indispensable tool that lets us manage a much larger catalog than we imagined. Worth every penny.
Oriol Penya
Organic Beauty Brands
It is impossible to calculate the hours Epinium has saved me managing customer catalogs. I've modified catalogs of up to 3,500 SKUs and run SEO audits comfortably from the same panel.
Jordi Ordóñez
Amazon Consultant
Epinium's ability to analyze and adjust ads in real-time based on performance has enabled us to maximize ROI and achieve our business goals more effectively. Without a doubt, I recommend Epinium to any seller.
Edgar Alvarez
Head eCommerce, BANDAI Entertainment Europe
Start forecasting your Amazon FBA inventory today.
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ExploreFrequently asked questions
How accurate is Epinium's Amazon FBA demand forecast?
Epinium's forecast models are trained on your actual sales history per ASIN — accounting for seasonality, trend, and external signals. Forecast accuracy improves over time as the model learns your products' specific demand patterns. Most users see meaningful accuracy within the first 30 days of connected data.
Does Epinium calculate reorder points automatically?
Yes. Epinium calculates the reorder point per ASIN based on your sales velocity, desired safety stock level, and your configured supplier lead time. When stock reaches the reorder point, you receive an automatic alert so you can place the purchase order in time.
Can Epinium help me avoid Amazon long-term storage fees?
Yes. Epinium monitors aged inventory across your FBA account and alerts you when ASINs are approaching the threshold for long-term storage or aged inventory surcharges — typically 181+ days for Amazon — giving you time to take action before fees are applied.
Does the forecast work across multiple Amazon marketplaces?
Yes. Epinium builds separate demand models for each ASIN–marketplace combination and consolidates them into a single replenishment view. Seasonal patterns, promotional calendars, and sales velocity are all calculated per marketplace rather than blended together.
Does Epinium integrate with my existing inventory or ERP system?
Epinium connects directly to Amazon's Selling Partner API to pull real-time FBA stock levels and sales data. For integration with your ERP or warehouse management system, our team can assist with custom data connection options available on higher-tier plans.
