Most people treat it as boring paperwork, yet it sits behind almost every purchase a company makes, and once accepted it is legally binding. It is the purchase order, and in many companies the rule is simple: no PO, no pay. This short video explains what a purchase order is and why that little document matters so much.
In three minutes, you will learn:
- What a purchase order actually is: a formal document a buyer sends to a supplier to order goods or services, which becomes a binding contract once accepted
- What a good PO spells out: item, quantity, price, delivery date and place, payment terms, and a unique PO number
- Why that PO number is the thread that ties the whole purchase together, connecting the order, the delivery and the invoice (the basis of the three-way match)
- The typical journey of a PO: from approved requisition to supplier confirmation, delivery, and matched payment
- The difference between buying with a PO and without one: agreed prices and checked invoices versus disputes, surprises and invoices nobody can verify
The takeaway: A purchase order is a commitment, not paperwork. It protects both sides by putting price, quantity and terms in writing, and its number is the thread that lets finance match order, delivery and invoice before paying. That is why “no PO, no pay” is a rule worth having.
Want to master the purchasing process, from requisition to payment? Our on-demand courses are built by people who work in procurement every day.

