The Data-Driven Inventory Forecast For Amazon Sellers & Agencies
"This Tool Saved 3 Months of Profit Overnight"
Plan with foresight, avoid FBA shortages, and stop burning through profits
Every month, Amazon sellers lose millions because of bad forecasting:
Stockouts don’t just kill sales, they bury your rankings, erase reviews, and hand market share to competitors.
Overstock doesn’t sit quietly, it eats your cash, racks up storage fees, and turns into dead inventory no one wants.
Guessing your inventory needs isn’t really planning, it’s just wasting money and hoping for the best. <br><br>
Let me share the reality.<br><br>
One bad forecast can wipe out an entire quarter’s profit.
That’s why smart planning isn’t just a bonus, it’s the difference between profit and loss.
It’s the only way to survive and scale without chaos.
Follow these steps to forecast with clarity ⬇️ <br><br>
Step 1: Access the Forecasting Tool
Log into your Fluvi dashboard.
- Go to Tools → Inventory Planner.
- Choose the product you want to forecast from the dropdown list.
You’ll instantly see:
- Past sales data (12–18 months back)
- Future projections (12 months forward)
Step 2: Fluvi’s Formula for Smarter Forecasts
Fluvi’s system combines two critical factors:
- Seasonality
- Compares the target month with the same month last year.
- Example: To forecast October 2025, Fluvi looks at October 2024. <br><br>
- Trend (Growth Modifier)
- Compares your last 6 months of sales with the same 6 months a year earlier.
- If sales increased → growth modifier > 1.0
- If sales decreased → growth modifier < 1.0
- If sales stayed the same → growth modifier = 1.0
Let me share an example
- October 2024 sales = 168 units
- Growth modifier = 0.83 (17% drop)
- Forecasted demand for October 2025 = 168 × 0.83 = 140 units <br><br>
Step 3: Reading the Growth Modifier
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0.83 → 17% fewer units than last year.
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1.0 → Flat, same units as last year.
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1.1 → 10% more units than last year.
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1.615 → 61.5% growth compared to the same period.
This single number tells you if your product is accelerating or slowing down. <br><br>
Step 4: Manual Adjustments (Adjust your Forecasts)
Forecasts are only as good as the data. Fluvi lets you edit inputs to make them realistic:
- Exclude one-time spikes → e.g., Amazon Lightning Deal inflated numbers.
- Add missed sales → e.g., stockouts that hid true demand.
- Include other channels → e.g., Shopify or retail sales.
- Custom growth assumptions →
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Expecting double sales? Enter 2.0 (200%).
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Expecting flat? Enter 1.0.
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Fluvi instantly recalculates the bars & numbers. <br><br>
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Step 5: Multi-Marketplace Forecasting
If you sell the same SKU across different Amazon marketplaces (e.g., US + Canada):
- Use filters to add multiple products into one calculation.
- Fluvi aggregates the sales so you can plan global purchase orders without guesswork. <br><br>
Step 6: Converting Forecasts Into Orders
- Check Stock on Hand
- See Amazon FBA + 3PL inventory combined.
- Fluvi also shows days of coverage left. <br><br>
- Set Target Coverage
- Decide how many days ahead you want inventory for (e.g., 50 days, 90 days, 180 days).
- Fluvi calculates the exact number of units you need to order. <br><br>
Step 7: From Planning to Ordering
Once the right unit quantity has been determined, the next step is to create a purchase order or, as we call it, a batch.
- Create Purchase Orders (Batch)
- Copy the number, hit Create New Batch.
- ** Current inventory + new inventory **
- See both how many days your current stock will last for as well as the units from your new purchase.
Current stock = 3,103 units (166 days of coverage) Forecasted need = 2,143 units → adds 101 days of coverage Total = 267 days of stock coverage <br><br>
Step 7: Flexibility at Every Step
- Want to exclude units? → Enter negative numbers (e.g., -50 to remove Lightning Deal).
- Want to include extra sales? → Add positive numbers (e.g., +100 from Shopify).
- Ran out of stock? → Add the “missed sales” so future forecasts are accurate.
Everything recalculates instantly → no more broken spreadsheets.<br><br>
Manual forecasting keeps you in the dark.
With Fluvi, your past sales data turns into clear, reliable forecasts — numbers you can trust to guide your next purchase.
Forecast accurately, restock confidently and scale smoothly. <br><br>
⭐ Start your free trial: Fluvi.com
