A purchase requisition is an internal request for approval to buy goods or services. A purchase order is a document a business sends to a vendor to specify what it wants to buy, including quantities, prices, and delivery requirements. The key difference is their purpose: a requisition requests internal approval, while a purchase order communicates the order to the supplier.
For growing businesses, understanding purchase requisitions vs. purchase orders helps establish who can request a purchase, who approves it, and who places the order. A clear process gives finance and operations teams greater control over spending while helping employees get what they need.
What is a purchase requisition?
A purchase requisition, sometimes called a purchase request, documents an employee's need for goods or services before an order is placed. It gives managers and other approvers the information they need to review the purchase against business needs, available funds, and company policies.
A purchase requisition typically includes:
- The requester's name and department
- A description of the goods or services and the quantity needed
- The business reason for the purchase
- The estimated cost and suggested vendor, if known
- The requested delivery date and location
- Supporting documents, such as a vendor quote
- The approval status and record of review
For example, a department manager might submit a requisition for five replacement laptops. The request explains why the equipment is needed, provides an estimated cost, and identifies when employees need it. Approvers can then authorize the request, ask for more information, or decline it before anyone places an order.
What is a purchase order?
A purchase order, often abbreviated as PO, is a document a buyer issues to a vendor detailing the goods or services being ordered. It provides a common reference for the buyer, vendor, receiving team, and accounting department.
A purchase order typically includes:
- A unique purchase order number
- The buyer's and vendor's contact information
- Item or service descriptions, quantities, and agreed prices
- The delivery address and requested delivery dates
- Payment terms and applicable shipping charges or taxes
- Any purchasing instructions or references to agreed terms
In the laptop example, the purchasing team uses the approved request to prepare a PO for the selected vendor. The PO records the laptop specifications, quantities, prices, and delivery details. When the equipment and invoice arrive, staff can compare them with the order.
A purchase order is different from an invoice. The buyer issues the PO to place an order; the vendor issues the invoice to request payment.
Purchase requisition vs purchase order: Key differences
Both documents support purchasing control, but they serve different audiences and stages of the process.
| Comparison | Purchase requisition | Purchase order |
|---|---|---|
| Purpose | Request internal approval for a purchase | Specify an order to a vendor |
| Audience | Managers, budget owners, and other internal approvers | The vendor and internal purchasing, receiving, and accounting teams |
| Created by | An employee or department requesting goods or services | An authorized buyer or purchasing team |
| Timing | Before the purchase is authorized | After required internal approvals and before fulfillment |
| Key information | Business need, estimated cost, and requested delivery date | Order details, quantities, prices, delivery requirements, and payment terms |
| Main control | Review the need and authorize spending | Document what was ordered and support receiving and invoice review |
Not every purchase requires both documents. A company may allow certain low-value purchases through an approved company card or another process. Written purchasing policies should explain when a requisition, a PO, or both are required.
How the purchase requisition and purchase order process works
The specific steps depend on your company's policies, but a typical purchasing workflow follows this sequence:
- Submit the requisition. The employee describes the need, estimated cost, and required timing.
- Review and approve the request. The appropriate managers or budget owners assess the purchase and resolve missing information.
- Create and approve the purchase order. An authorized buyer confirms vendor selection, pricing, and order details, then obtains any required PO approvals.
- Send the order to the vendor. The purchasing team confirms availability and delivery arrangements with the supplier.
- Record receipt of the goods or services. Staff verify quantities, condition, or completion and document any discrepancies.
- Review the invoice. Accounts payable compares the invoice with the PO and, where required, the receiving record before approving payment.
A two-way match compares the purchase order with the vendor invoice. A three-way match adds the receiving record, helping the accounting team check that quantities and charges align with what was ordered and received.
Requisition approval does not automatically mean an order has been sent. Keeping request, approval, order, and receipt statuses clear helps prevent missed purchases and duplicate follow-up orders.
Why clear purchasing workflows matter as your business grows
Informal requests may work when a small team buys from a handful of vendors. As purchasing volume increases, email threads and spreadsheets make it harder to see what has been requested, approved, ordered, and received.
A consistent requisition and purchase order process helps address common problems:
- Missed requests: Employees can track progress rather than relying on an approval email someone may overlook.
- Unauthorized spending: Approvers can review purchases before employees commit company funds.
- Duplicate orders: Purchasing teams have a record of existing requests and orders before placing another purchase.
- Invoice discrepancies: Accounting teams can investigate differences between what was ordered, received, and billed.
- Incomplete records: Documented requests and approvals provide a reference for internal reviews and financial audits.
Best practices for managing purchase requisitions and purchase orders
Effective purchasing starts with clear responsibilities, consistent information, and visibility into each step. These best practices help your team manage requests, approvals, and orders while keeping purchasing aligned with accounting.
Define purchasing responsibilities and approval thresholds
Document who can submit requests, approve spending, create POs, and confirm receipt. Set approval requirements based on factors such as purchase value, department, or type of expense. Where practical, separate requesting, approving, and paying for purchases to strengthen internal controls.
Standardize the information employees submit
Use a consistent digital requisition form so approvers receive the business reason, estimated cost, delivery requirements, and supporting documents together. Complete information reduces back-and-forth and helps employees understand what is required before submitting a request.
Keep approvals and changes visible
Maintain a record of approvals and changes to quantities, pricing, or delivery requirements. When an issued order needs to change, coordinate with the vendor and update the purchasing record so receiving and accounting teams work from the same information.
Connect purchasing with accounting
Choose software that lets purchasing, receiving, and accounting teams work from consistent records. Native purchasing functionality within a financial management platform can reduce duplicate entry and make it easier to follow a purchase from the original request through invoice review.
Manage requisitions and purchase orders with Gravity Software
Gravity Software's native Requisition Management and Purchase Order Management functionality helps growing businesses manage requests, approvals, and purchasing within one cloud-based financial management platform built on the Microsoft Power Platform.
Employees can submit and track requisitions through configurable approval workflows. Approved requisitions can be consolidated into purchase orders, helping teams move from internal requests to vendor orders with a clear record of approvals.
Purchase Order Management works with Inventory Management, Accounts Payable, and General Ledger in the same platform, supporting receiving and two-way or three-way invoice matching. For multi-entity organizations, Gravity also supports assigning requisitions to the appropriate entity within a single database.
Ready to improve purchasing visibility and control? Schedule a demo to see how Gravity Software brings requisitions, purchase orders, and accounting together.
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Updated on October 19, 2026