Purchase Order Management Workflow

Updated: 2026-03-04

Purchase orders (POs) are a simple control: they make spending visible before money leaves the business. If you buy inventory, parts, materials, or equipment, a PO workflow keeps costs accurate and prevents chaos.

The clean purchase order workflow

1) Request + approve

Start with a purchase request (even informal) and approve it. Approval is where you control:

• budget
• vendor choice
• expected delivery date
• quantity

2) Issue the PO

A PO should include:

• vendor
• items/description
• quantities
• expected price
• ship-to location
• reference/job/project (if applicable)

3) Receive goods (including partial receipts)

When items arrive, create a receiving record:

• what was received
• date received
• who received it
• what is still outstanding

Partial receipts are normal. Track them so inventory and project costs stay accurate.

4) Enter the vendor bill

Enter the bill when received and link it to the PO/receipt. This keeps:

• accounts payable accurate
• inventory quantities accurate
• project/job costs accurate

5) Match before payment

Before paying, confirm:

• the bill matches the received quantity
• pricing matches the PO
• any freight/damage is handled correctly

This is “three-way matching”: PO → Receipt → Bill

Common mistakes

• Paying from a vendor email without entering a bill
• Recording the full PO as a bill immediately (even if nothing arrived)
• Ignoring partial receipts and forgetting outstanding items
• Not tracking freight/other costs consistently

When to use POs vs. not

POs are most valuable when:

• buying inventory/parts regularly
• managing projects with material budgets
• ordering expensive items
• multiple people can buy without visibility

If you have only occasional purchases, start with bills and upgrade later.

Related

• Inventory accounting: /guides/inventory-accounting/
• AP workflow: /guides/accounts-payable-workflow/
• See pricing: /pricing/