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② 後台搜尋「ProfitEngine — Purchasing & Inventory」→ 直接安裝（推薦）
原文外掛簡介
ProfitEngine is a purchasing, inventory-planning and profit system built directly on WooCommerce. It answers the questions a store owner asks every week:
What should I buy, and how much?
From which supplier, and when?
What will it cost to get it into my warehouse?
What is my real profit after costs, discounts, fees and shipping?
Most stores only see a simple “price minus cost” figure. ProfitEngine records the true cost of every sale at the moment it happens, forecasts demand from your own sales history, and turns that into a clear reorder list and purchase orders you can send to suppliers.
Video walkthrough
See ProfitEngine in action: reorder suggestions, purchase orders and real profit.
Dashboard
Sales overview chart: orders, revenue and profit over time, with Today (hour by hour), Last 30 Days, Last 90 Days and Last 1 Year views. Hover any period to see its exact figures; click the legend to show or hide a series.
Key numbers at a glance: revenue, profit and margin, product & order cost, purchase spending, inventory value and products to reorder.
Recommendations: what to act on next, such as products to reorder now, products sold at a loss, stock running low, thin margins and any setup steps still to finish.
Top products by profit and margin distribution across your catalogue.
Suppliers to order from with the recommended spend for each, supplier spending, and recent purchase orders.
Smart reorder
Every product with demand is ranked by urgency: Critical (will run out before a new order could arrive), Warning (at or below its reorder point) and Recommended (should be topped up soon).
A suggested order quantity for each product, rounded up to the supplier’s minimum order quantity (MOQ).
Stock already on the way in open purchase orders is taken into account, so you never order twice.
Tick the products you want, adjust quantities, and create purchase orders in one click. They are split automatically into one order per supplier.
Forecasts recompute automatically every night, or on demand with one click.
Transparent forecasting
Every suggestion is built from simple formulas you can check:
Average daily sales = units sold ÷ sales window (days)
Days of stock remaining = current stock ÷ average daily sales
Safety stock = your manual value, or average daily sales × safety days
Reorder point = your manual value, or (average daily sales × lead time) + safety stock
Suggested quantity = average daily sales × (lead time + coverage days) + safety stock − current stock − stock already on order
Purchase orders
Create, edit, send and receive purchase orders with sequential PO numbers.
Status lifecycle: Draft → Sent → Partially received → Received (or Cancelled). Received orders are locked to protect your history.
Partial and full receiving: received quantities are added to WooCommerce stock automatically. If stock tracking is off for a product, it is switched on and the received quantity becomes its starting stock.
Landed cost: shipping and other costs (customs, handling, fees) are shared across the order’s lines by value, so each product’s cost reflects what it really cost to bring in.
Tax handling: mark tax as recoverable (VAT/GST you claim back, kept out of product cost) or non-refundable (import duty, added into product cost).
Discounts and tax as a fixed amount or a percentage.
Multi-currency: buy in your supplier’s currency with an exchange rate to your store currency.
The expected delivery date defaults to today; the product’s supplier is linked automatically when you add it to an order.
Printable purchase order with your own logo, ready to print or save as PDF and send to the supplier.
Submitting the same receipt twice can never add stock twice.
Suppliers
Supplier records with contact person, email, phone, address, currency, payment terms, lead time, minimum order value and notes.
Per-product supplier details: supplier SKU, purchase cost, MOQ and lead time, with a primary supplier per product.
Archive suppliers you no longer use without losing their history.
Products
A fast stock grid with product thumbnails, supplier, selling price, cost, margin, stock, inventory value and reorder point.
Filter by In stock, Low, Out or Not tracked, search, and sort any column.
Set purchasing data for simple products and for each variation of a variable product.
Bulk-assign a supplier (and cost) to many products at once.
Turn on stock tracking for a product straight from the grid.
Real profit
Profit is recorded for every order line at the moment of sale: revenue (after discounts and refunds) minus product cost, shipping, payment fees and other costs. Tax is excluded by default.
Cost history is preserved: changing a product’s cost later never rewrites the profit of past sales.
Refunds and cancellations are reflected automatically.
Cost basis of your choice: weighted average or last purchase cost, updated each time stock is received.
Configurable revenue recognition: choose which order statuses count as revenue. Cash-on-Delivery stores can count only Completed orders so unpaid orders don’t inflate profit.
Profit by product with a full cost breakdown (product, shipping, payment fees, other).
Historical backfill: calculate profit for orders placed before you installed the plugin.
Reports
Profit by product, profit by category, sales vs cost, supplier spending, purchase history and inventory value.
Date filtering, sortable columns and totals.
Export to CSV (safe to open in Excel or Google Sheets) or PDF.
Stock notifications
Get told the moment something needs attention, wherever your team already works:
Email, sent by your own site.
Slack, Discord and Microsoft Teams through a channel webhook.
Telegram through your own bot.
Custom webhook: the alert as JSON for Zapier, Make, n8n or your own code, with an optional HMAC signature.
Choose which alerts you want: reorder now (critical), running low, out of stock, low stock, purchase order overdue and stock received. Alerts raised together are grouped into one message, and a quiet period stops the same product alerting again and again. An optional daily digest lists everything to reorder with suggested quantities and estimated spend, at the hour you choose.
Messages are sent in the background with automatic retries, so a slow service never slows down your store. Each channel has a Send test button and shows its last delivery, and a delivery log lists recent sends. Every channel is off until you turn it on.
Built for WooCommerce
Compatible with WooCommerce High-Performance Order Storage (HPOS).
Works with simple and variable products.
Uses your store’s currency, symbol position and number format everywhere.
Modern, fast admin interface built with the WordPress REST API and React.
Only administrators and shop managers can access it.
Translation-ready.
Your data stays on your own site. It only connects to an outside service if you turn on a notification channel (see External services).
External services
ProfitEngine works entirely inside your WordPress site. It only contacts an outside service when you turn on a notification channel on the ProfitEngine > Notifications screen. Every channel is off by default, and nothing is sent until you enable one and save.
When a channel is on, a message is sent to it when an alert you selected happens (a product needs reordering, runs low or out of stock, a purchase order is overdue or received), when the daily digest is due, and when you press Send test. A message contains your store name, the alert headline, the product names and SKUs involved, their stock level, sales rate, days of stock left and suggested order quantity, purchase order numbers and supplier names, and a link back to your admin. No customer or order details are sent.
Slack (hooks.slack.com): the message is posted to the incoming webhook URL you enter. Terms of service, Privacy policy.
Discord (discord.com): the message is posted to the channel webhook URL you enter. Terms of service, Privacy policy.
Telegram (api.telegram.org): the message is sent through the Telegram Bot API with the bot token and chat ID you enter. Terms of service, Privacy policy.
Microsoft Teams (Power Automate Workflows): the message is posted to the workflow webhook URL you enter. Microsoft Services Agreement, Privacy statement.
Custom webhook: the message is posted as JSON to the URL you enter, which you control. That service’s own terms and privacy policy apply.
Email alerts are sent by your own site through WordPress mail and do not use an outside service unless your site is already set up to send mail through one.
