Difference Between A Purchase Order And An Invoice

Purchase Order :-

Purchase order is a document indicating types, quantity of products and services  issued by a buyer or seller. It details the items the buyer agrees to purchase for a certain price. It also includes the payment terms, shipment, other associated terms and conditions.  The customer sometimes creates standing PO. The standing or blanket PO allows a company to order the same product multiple times using the same PO number over an extended purchase period.

Purpose and Importance Of PO :-

Purchase Order

Purchase orders are typically used when a buyer wants to purchase supplies or inventory on account. It is important as you and your team have instant visibility of incoming stock; how much is coming and when is it due to turn up.  A properly managed Purchase Order system will quickly tell you what’s been ordered, shipped and received but not invoiced and so on. Besides that, creating POs in the system will help prevent ordering more of an item than you may need. You can also match the delivered goods against what was ordered, to prevent wrong delivery. Suppliers use PO’s to fulfil their orders and payment processing.  An online invoicing software makes it easy to send purchase orders to vendors online, in pre-designed templates.

Invoice :-

Invoice is a document issued by a seller to a buyer indicating items sold,  prices, date of shipment, delivery and payment terms. It is also called as a “bill”, “statement” or “sales invoice”. The term invoice indicates money the buyer owes to a seller. The invoice is also specified with the period of time after which the buyer has to make payment to the seller for the goods and services they have purchased. Modern-day invoices are transmitted online.

Importance of An Invoice :-


Invoices are a great way to track your earnings, business and expenses. It gives you the view of the sale of products for inventory management and to calculate the amount of profit made. If invoices are utilized properly, they may act as a documentation for all your business transactions. Invoice reports help you to show which orders are completed and paid for and total outstanding for the customers. Besides that, you have complete financial control of your business and ongoing progress. A suitable invoice management software is useful in creating and scheduling  client invoices with ease.

Key Differences :-

  1. The purchase order is what the buyer prepares, while the invoice is what the seller makes in lieu of the payment to be received.
  2. The purchase order lists the quantity and the due date of delivery of goods, products or services purchased/ordered by the buyer, while an invoice has, on it the price of the goods, products or services being sold.
  3. Both, purchase order and invoice have the same details except the technical mention for records viz.a.viz the shipping details, invoice number and purchase orders number which is additional on the invoice.

One can create both purchase orders and invoices easily by using online tools like Invoicera.

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