Three 2026 policy changes make inventory management harder than ever. Amazon discontinued FBA prep on January 1, so you’re now responsible for labeling and prep. Commingling ends March 31, and every unit needs your FNSKU label, no more shared pools. FBA fees increased $0.08–$0.31/unit in January. Together, these changes mean higher costs per unit, zero tolerance for mislabeled inventory, and tighter margins that require precise COGS tracking. If you’re still managing inventory in spreadsheets, you’re flying blind.
Trusted by Multi-Channel Sellers
2026 Inventory Challenges for Resellers
Amazon policy changes in early 2026 require immediate action. Understand the challenge. Get ahead of it before it strands your inventory.
FBA Prep Discontinued
Amazon no longer labels, poly-bags, or preps your inventory. You need a 3PL or handle prep yourself. Ecom Circles integrates with warehouse services for FBA prep, so you upload inventory and it's ready for shipment.
Commingling Ending
Stickerless/shared inventory pools are gone. Every unit needs YOUR FNSKU. If you don't track which units are labeled, you'll get stranded inventory locked at FBA. Ecom Circles flags unlabeled units before the deadline.
FBA Fee Increases
Storage fees are now $0.78/cu ft standard, $2.40/cu ft peak. Returns processing fee added. COGS tracking must include these costs or your margin calculations are wrong. Ecom Circles includes all 2026 rates.
Overselling Risk
Sell 50 units on Amazon AND Walmart without inventory sync, and both can sell simultaneously. Overselling causes penalties, cancelled orders, and lost trust. Automatic sync prevents this entirely.
Complete Inventory Management Suite
Eight essential features built for multi-channel sellers managing FBA, FBM, Walmart, and Mirakl.
Multi-Channel Stock Tracking
Track inventory across Amazon (FBA + FBM), Walmart (WFS + seller-fulfilled), and Mirakl. One SKU, multiple channels, automatic sync.
COGS & True Profitability
Track cost basis per SKU including wholesale price, shipping, prep costs, and FBA fees. Know your true margin before you list.
Bulk Editing & Alerts
Edit 500+ SKUs in one operation. Filter by supplier, category, margin, or velocity. Set min/max thresholds and get alerts when inventory drops.
Learn More →3PL & Warehouse Sync
Connect to your 3PL or Ecom Circles' warehouse. When stock arrives, inventory syncs automatically across all channels.
MAP Enforcement
Set Minimum Advertised Price per product. Blocks repricing below MAP automatically. Essential for brand-authorized wholesale.
FBA Shipment Planning
Calculate how many units to send to FBA based on velocity, storage costs, and restock limits. Avoid long-term storage fees.
Stranded Inventory Detection
Flags inventory at FBA that isn't linked to an active listing. With commingling ending, stranded inventory risk is critical.
FNSKU Label Tracking
Track labeled vs. unlabeled inventory before the March 31, 2026 commingling deadline. Prevents stranded inventory at FBA.
Inventory in One View
One operational layer for your whole catalog — sync stock, track true costs, and stay compliant with the 2026 deadlines.
Multi-Channel Sync
Create one SKU and assign quantities to each channel. When total inventory drops, Amazon, Walmart, and Mirakl all update automatically — so both channels can never oversell the same unit.
Start Free
Get Started in 60 Seconds
Connect your Amazon or Walmart account via OAuth (one click)
Import your SKU list and set cost basis (COGS) per product
Assign inventory quantities across each sales channel
Enable automatic sync and low-stock alerts
Import once, sync everywhere. No spreadsheets, no manual reconciliation, no overselling.
Why Inventory Management Matters
Inventory management is the hub of your operation. Here's what centralized tracking solves for real sellers.
Wholesale Seller with 3 Suppliers
Each supplier uses different SKU formats. Without centralized inventory, you're reconciling 3 spreadsheets daily. One mistake and your supplier costs are wrong.
Multi-Channel Seller (Amazon + Walmart)
Walmart's algorithm deprioritizes listings that go out of stock. One stockout costs you weeks of organic ranking recovery. Automatic sync keeps both channels in stock.
RA Seller Scaling Past 500 SKUs
At this volume, manual COGS tracking breaks. You think you're making 25% margins but after FBA fees, storage, and prep costs, you're at 8%. Ecom Circles shows the true number.
Ecom Circles vs. Spreadsheets
Stop reconciling tabs by hand. Here's how an operational inventory layer compares — and the real-world results sellers report.
vs. Spreadsheets
No automatic sync. Error-prone. Can’t handle multi-channel. No alerts. Manual updates kill productivity.
vs. Forecast-Only Tools
Some tools focus only on forecasting and planning inventory buys. Ecom Circles is built for resellers managing COGS and multi-channel sync across Amazon, Walmart, and Mirakl, the operational layer you need daily.
Real-World Impact
Inventory syncs automatically across all channels.
No more manual inventory updates across spreadsheets.
COGS tracking prevents underpricing.
Warehouse syncs automatically, no daily calls.
Track FNSKU labeling status and flag units that need attention before the March 31 commingling deadline.
$1.7B+ in total sales volume processed. 5.15M listings managed. 7,174+ seller signups since 2020.
Inventory in Your Workflow
Inventory management is the hub of your operation. Sync with orders to prevent overselling across channels, then reprice by inventory level to optimize pricing based on stock. Coordinate with inventory in management services to track FBA prep and fulfillment compliance.
For warehouse and dropshipping operations, warehouse inventory tracking ensures your 3PL stock levels stay synchronized, and you can track dropshipped inventory across your fulfillment pipeline.
Loved by eCommerce Sellers Worldwide
See how real sellers grow faster and stay competitive with Ecom Circles.
I needed one system to track stock and costs across every channel. Ecom Circles gave us accurate COGS and killed the overselling we kept hitting on spreadsheets.
There's no way we could have brought in almost $45k in profit over Black Friday / Cyber Monday weekend without it.
It's the best software I've used. It makes it easy to scale while making sure nothing falls through the cracks.
Common Questions