Shopify Purchase Orders: Why + How (2026 Guide)

Shopify doesn't have purchase orders. That's a problem.#

A purchase order is a document you send to a supplier saying "I want to buy X units of Y at Z price, delivered by this date." It's the foundation of inventory management.

Shopify has no PO system. When you need to restock, you email your supplier, maybe attach a spreadsheet, and hope you both remember the details. There's no way to track what you ordered, when it's arriving, what it cost, or whether you received everything.

For a store doing $10K/month in sales, this might be manageable. At $50K+, it's chaos.

What purchase orders actually do#

1. Track what you ordered

A PO records exactly what you ordered from which supplier: items, quantities, prices, expected delivery date. No more "did I order the red ones or the blue ones?"

2. Know what's coming

Open POs show you what inventory is in transit. This helps you make better decisions: "I have 5 units left, but 50 are arriving Thursday. I don't need to rush-order."

3. Verify deliveries

When a shipment arrives, you check it against the PO. Did you receive everything? Were the quantities right? Any damaged items? This catches supplier errors before they become your problem.

4. Track costs

POs record what you paid. Over time, this builds a cost history: "Last order was $12/unit, this time they want $14. Time to negotiate or find a new supplier." A good tool also keeps a weighted average cost per item, updated on every receive, so your margins are calculated against what you actually paid — not your retail price. And if you're in Australia, NZ, the UK or the EU, look for GST/VAT on the PO itself: enter ex-tax costs, set the tax rate, and the PO total matches your supplier's tax-inclusive invoice line for line.

5. Create an audit trail

Every purchase is documented. Your accountant loves this. Tax season is easier. Inventory valuations are accurate.

How Shopify sellers handle POs today#

The email method

1. Check what's low
2. Email supplier: "Hey, need 100 units of SKU-123"
3. Supplier confirms
4. Shipment arrives, you manually update Shopify quantities
5. Forget what you paid, forget the timeline, repeat

The spreadsheet method

1. Maintain a spreadsheet of all orders
2. Manually update when shipments arrive
3. Cross-reference with Shopify inventory
4. Spend hours reconciling discrepancies
5. Realize the spreadsheet is 3 weeks out of date

The right method

1. See low stock alert
2. Create PO in inventory software with one click
3. PO auto-populates with items, quantities, and supplier details
4. Send PO to supplier via email (PDF attached)
5. When shipment arrives, mark as received
6. Shopify inventory updates automatically
7. Cost history tracked, audit trail complete

Setting up purchase orders for your Shopify store#

Since Shopify doesn't have POs natively, you need a third-party tool. Here's what to look for:

Must-have features

• Supplier management — store contact info, lead times, price lists
• PO creation — select items, quantities, expected delivery
• Email to supplier — send the PO as PDF directly from the tool
• Receiving workflow — mark items received, including partial receipts so a PO stays open for the backorder and tracks ordered vs received per line
• Shopify sync — received items automatically update Shopify stock
• Cost tracking — last cost and weighted average cost per item, updated on receive
• GST / VAT on POs — tax-inclusive totals that match your supplier invoice (essential for AU/NZ/UK/EU retail)

Nice-to-have features

• Auto-PO generation — automatically create POs when stock hits reorder point
• Recurring orders — for items you reorder on a schedule
• Multi-supplier — split an order across multiple suppliers

How InventoryQuick handles Shopify POs#

1. Connect your Shopify store — the AI assistant walks you through it in 2 minutes
2. Your products sync automatically — variants, prices, stock levels
3. Set up suppliers — add contact info, lead times
4. Create a PO — select supplier, add items, set quantities and prices
5. Send to supplier — email the PO as PDF
6. Receive shipment — mark items as received
7. Shopify stock updates automatically — receiving a PO syncs the new quantities back to Shopify, no manual entry

The whole workflow lives in one place. No spreadsheets, no manual Shopify updates, no lost emails.

Start your 7-day free trial — purchase orders included on every paid plan.

Related: Shopify Inventory Management Guide | How to Stop Overselling | Stocky Alternatives | How to evaluate a Shopify inventory app | Migrate off Stocky