Inventory · Forecasting and Replenishment

Inventory Forecasting and Replenishment: reorder points from your sales on every channel

Inventory forecasting answers one question for each SKU: how many units will sell before the next delivery arrives. InfiPlex answers it every day. It reads each SKU's sales across every connected channel over three time windows, weights recent sales against the long-run rate, converts that into expected demand over your supplier lead time, adds your safety stock, and flags the SKU the day on-hand stock reaches that reorder point. The result is a daily Restock Report by email, the same SKUs highlighted on the Inventory page, and a restock list an AI agent can turn into a reorder sheet with suggested quantities. It is part of the InfiPlex inventory system on every plan.

  • Every channel countedAmazon, Walmart, Shopify, eBay, and EDI sales in one forecast
  • Your lead timesAccount default with per-SKU overrides
  • IncludedRestock Alerts are on every InfiPlex plan

How it works

How InfiPlex forecasts demand and sets the reorder point

A forecast built on one sales window is either jumpy or slow. InfiPlex blends three, so a SKU that sold steadily for six months and doubled this month gets a reorder point that reflects both facts. Here is the worked example from the settings page, with a 14 day lead time:

Sales window Units sold Weight Expected demand over a 14 day lead time
Last 180 days 100 50% 3.9 units
Last 60 days 50 35% 4.1 units
Last 14 days 25 15% 3.8 units
Safety stock     5 units
Reorder point     16.8, shown as 17

Each row is the same idea: units per day over that window, times the days your supplier takes to deliver, scaled by how much you trust that window. When on-hand stock for the SKU reaches 17, it is on the next report. The formula and all eight settings are written out in the Restock Alerts guide.

What you get each day

The InfiPlex Restock Report and the reorder sheet

Three outputs come from the same calculation: a Restock Report emailed once a day, the same SKUs highlighted in orange on the Inventory page, and a restock list an AI agent can read through the InfiPlex MCP server with Claude, Cursor, ChatGPT through Codex, or any MCP client.

What needs reordering today? Show on hand, reorder point, days of cover, and a suggested order quantity.

Used InfiPlex OMS integration

6 SKUs are at or below their reorder point. Sorted by days of cover:

SKU On hand Reorder point Sold last 7 days Days of cover Lead time Suggested order
HX-2040 38 61 96 2.8 14 days 480
KT-118 71 94 154 3.2 10 days 660
GL-21 60 66 105 4.0 5 days 300
PM-55 41 44 44 6.5 14 days 190
DV-900 29 30 31 6.5 21 days 180
BL-7702 22 24 22 7.0 14 days 95

All six have less cover than their lead time, so each is marked order now. HX-2040 runs out first.

Days of cover for SKUs at their reorder point

HX-20402.8 days
KT-1183.2 days
GL-214.0 days
PM-556.5 days
DV-9006.5 days
BL-77027.0 days

The daily email carries the reorder point, on-hand stock, and sales for each window. The agent adds what a buyer needs next: seven day velocity, days of cover, and a suggested quantity. The nightly restock agent guide has the instruction file and the cron line, and it runs on a read-only key.

Tuning

Tune the forecast to each supplier and each SKU

Four controls shape every reorder point. All of them live under Settings > Base Settings > Warehouse, with per-SKU values in the SKU Utilities tool or the Price & Inventory upload.

  • Lead time per SKU. A supplier that takes 30 days and one that takes 5 should not share a reorder point. Set the account default, then override any SKU.
  • Safety stock per SKU. The floor you never want to drop below, added to every reorder point. A SKU with no recent sales still reorders at this level.
  • Window lengths. 180, 60, and 14 days are defaults. Shorten them for fast-moving catalogs or lengthen them for slow ones.
  • Weights. 50, 35, and 15 by default, totaling 100. Move weight to the short window for seasonal products, or to the long window for steady ones.

Where it fits

InfiPlex forecasting next to a standalone forecasting app

Replenishment tools are usually bought as a separate subscription and connected to each sales channel. In InfiPlex the forecast sits inside the system that already has your orders and your inventory.

What you need Standalone forecasting app InfiPlex
Sales history Connected per storefront or marketplace Every connected channel, already in one order format
Inventory counted Synced in from each source The same multi-warehouse inventory InfiPlex sends to your channels
Reorder point Calculated from sales and lead time Weighted sales over three windows, lead time, and safety stock
Order quantity Suggested in the app Suggested by the nightly restock agent, sized your way
Price A separate monthly subscription Included on every InfiPlex plan

A forecast is only as good as the sales and stock numbers underneath it. InfiPlex already holds both for multichannel inventory sync, so the reorder point is computed on the same numbers your channels are sold from. For the SKUs that sell the most and earn the most, see the top selling SKUs report and the SKU profitability report.

Frequently asked

Inventory forecasting and replenishment questions, answered

What multichannel sellers ask before they rely on InfiPlex for reordering.

What is a reorder point?

A reorder point is the on-hand quantity at which you need to place a restock order so the new units arrive before you run out. It equals the units you expect to sell during your supplier lead time, plus a safety stock cushion.

How does InfiPlex forecast demand for a SKU?

It takes units sold over three windows, 180, 60, and 14 days by default, converts each to expected sales over your delivery lead time, weights them 50, 35, and 15 percent, and adds them together. Safety stock is added on top. The Restock Alerts guide writes out the formula and every setting.

How do I handle seasonal products?

Shift weight toward the short window. Putting more of the 100 percent on the 14 day range makes the reorder point follow what is selling now, and putting more on the 180 day range holds it steady through spikes.

Resources

Related InfiPlex pages and guides

Reorder before you run out, on every channel you sell

Turn on the daily Restock Report with one setting, then tune lead times and weights as you learn your catalog.

Want to see your own reorder points?

Tell us which channels and warehouses you run and we will show you the Restock Report and the agent reorder sheet on a live InfiPlex instance. Contact us, email info@infiplex.com, or call 888‑770‑0857.

InfiPlex™ is a trademark of InfiPlex. Marketplace, retailer, carrier, and software names are trademarks of their respective owners. InfiPlex is an independent integration provider and is not endorsed by or affiliated with any of them. Agent output on this page is sample data shown in the format the InfiPlex MCP server returns. ©2026 InfiPlex. All rights reserved.