Inventory & Reorder Planner for Online Sellers

Plan replenishment before a profitable SKU turns into a stockout. This Excel inventory planner helps online sellers estimate stock cover, reorder points, suggested purchase quantities and the cash required for the next order.

What the planner covers

• Average daily sales velocity
• Current stock and inbound stock
• Days of stock cover
• Total replenishment lead time
• Safety-stock allowance
• Estimated reorder point
• Suggested reorder quantity
• Purchase-order cash requirement

Why reorder timing matters

Ordering too late can cause stockouts, lost ranking and interrupted advertising. Ordering too early can tie up cash and increase storage exposure. A simple reorder point gives you a consistent starting rule: expected demand during the full replenishment lead time plus a safety-stock buffer.

The workbook is useful for Amazon FBA sellers, Shopify merchants and other ecommerce businesses that need a repeatable way to monitor several SKUs rather than making replenishment decisions from memory.

Use the full lead time

Lead time should include everything that can delay sellable stock: manufacturing, quality checks, freight, customs, delivery to the fulfilment network and receiving time. Update the assumptions whenever supplier reliability or sales velocity changes.

Format: Microsoft Excel workbook. Digital download only.

Licence: One purchaser or legal business entity. No resale or redistribution.

Important: This is a planning tool, not a guarantee against stockouts or excess inventory. Seasonality, promotions, supplier delays, storage limits and cash flow should also be considered.