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How to Write a Purchase Order

In the day-to-day operations of a business, purchase orders (POs) play a vital role. While they may seem like just another piece of paperwork, they are a critical instrument ensuring streamlined procurement, enhanced financial control, and improved business communication. POs are involved in many company areas, including its automation processes. Therefore, it’s important to understand why they are essential and why automating them is paramount for growth.

What is a purchase order?

A purchase order is a formal document issued by a buyer to a seller outlining the requested goods or services, their quantities, agreed-upon prices, and delivery details. Unlike invoices, which detail goods already delivered and payment due, purchase orders are proactive communication tools, preventing confusion and ensuring that both parties are on the same page.

Benefits of Implementing Purchase Orders

POs are efficient tools for simplifying the ordering process by leveraging features like catalogs and automation to expedite transactions. They ensure accurate charging by facilitating easy reconciliation between invoices and orders, ultimately saving valuable time in administrative tasks.

Another fundamental advantage of POs lies in their contribution to budgeting processes. By necessitating the calculation of order quantities and prices beforehand, they provide a structured framework for financial planning. Additionally, they make for a comprehensive historical record of purchases, aiding in informed decision-making and future forecasting.

POs also serve as precise blueprints of transactions, fostering clear communication between buyers and sellers. By accurately delineating expectations, they mitigate the risk of misunderstandings or disputes. Furthermore, they serve as legally enforceable documents, ensuring accountability and providing recourse in case of non-compliance with agreed terms.

How do you write a purchase order?

Here are some essential steps to consider when crafting a PO:

  1. Header Information: Begin by including the necessary information, such as the name and address of the buying company, the vendor’s details, the PO number, and the date of issue. This establishes the basic framework for the document.
  2. Description of Goods or Services: Specify the items or services being purchased. Include quantity, unit price, and applicable specifications or part numbers. This process helps avoid confusion and ensures that both parties are on the same page regarding expectations.
  3. Terms and Conditions: Outline any terms and conditions that govern the purchase, such as payment terms, delivery instructions, warranties, and return policies. Clearly defining these terms upfront can prevent disputes later on.
  4. Authorization: Ensure the PO is correctly authorized according to your company’s internal procedures. This part may require approval from relevant departments or individuals before issuing the PO.
  5. Review and Finalization: Before finalizing the PO, carefully review all details to ensure accuracy and completeness. Mistakes or omissions at this stage could lead to delays or other issues.
  6. Distribution: Once the PO is finalized, distribute copies to the vendor and other relevant parties, such as accounting or receiving departments. This ensures everyone knows the transaction and can take appropriate action as needed.

Are purchase orders legally binding?


A PO gains legal weight upon the seller’s acceptance, whether implicitly through order fulfillment or explicitly through confirmation. Any alterations proposed by the seller necessitate the buyer’s acceptance or the option to cancel the order, underscoring the significance of mutual agreement.

Central to a PO’s legality are its terms and conditions, which encompass payment methods, delivery schedules, warranties, and cancellation policies. Harmony between these terms and any prior agreements is crucial. Conflicts often stem from previous documents, emphasizing the need for consistency in contractual obligations.

Moreover, a PO’s legal validity hinges on the issuer’s authority within the buying company. Without proper authorization, typically from managerial or departmental channels, the PO may be rendered invalid. Clear internal policies and communication regarding PO issuance are thus indispensable for ensuring legal compliance and efficacy.

What are the elements of a purchase order?


  • Date: The creation date of the PO alongside the anticipated delivery date for the goods or services.
  • Particulars: Detailed specifications, including the name, description, item code, and any pertinent details for each ordered product or service.
  • Quantity: Clear indication of the quantity required for each item or service ordered.
  • Price: Comprehensive pricing information encompassing unit price, total cost, taxes, discounts, and applicable delivery charges.
  • Buyer and Seller Information: Vital contact details such as names, addresses, logos, and tax identification numbers for both buyer and seller. It may include the details of the individual or department handling the PO.
  • PO Number: A distinct identifier assigned to the PO for reference and tracking purposes.
  • Terms and Conditions: Explicitly outlined payment terms, cancellation policies, warranties, dispute resolution mechanisms, and other relevant clauses governing the transaction. These terms should align with prior agreements or negotiations between the involved parties.
  • Signature: Represents the signature or official stamp of the authorized individual or entity responsible for issuing the PO, affirming its validity and acceptance.

From ensuring clear communication to streamlining workflow and financial control, purchase orders offer invaluable benefits for many businesses. Whether you’re a small business or a large corporation, Zeal allows you to craft purchase orders that can pave the way for smoother transactions, stronger vendor relationships, and a more efficient and successful business operation while building upon your automation journey. 

To manage and draft efficient purchase orders, schedule a demo here.