How to Manage Purchase Orders

Learning how to manage purchase orders is essential for Australian finance teams responsible for controlling company spending.

Purchase orders provide structure to procurement. They ensure purchases are approved, documented, and verified before payment is made.

Without a clear purchase order process, businesses often face problems such as:

• Unapproved spending
• Duplicate purchases
• Supplier disputes
• Budget overruns
• Unexpected invoices

For example, a construction company in Melbourne purchasing building materials may receive invoices weeks after goods arrive. Without a purchase order system, the finance team may struggle to confirm whether the purchase was approved.

A structured workflow allows organisations to manage purchase orders before invoices arrive and helps finance teams maintain visibility across company spending.

Many Australian organisations rely on automated finance systems to streamline procurement and approvals. You can learn more about these systems in our guide to automated finances for Australian businesses.

What Is a Purchase Order?

A purchase order (PO) is a document sent from a buyer to a supplier confirming a purchase.

A typical purchase order includes:

• Supplier name and contact details
• Product or service description
• Quantity ordered
• Unit price
• Total purchase value
• Delivery instructions
• Payment terms

Once accepted by the supplier, the purchase order becomes a binding agreement.

For Australian businesses, purchase orders also help maintain clear documentation for GST reporting and BAS preparation.

Purchase orders allow finance teams to track financial commitments before invoices arrive.

Why Australian Businesses Need to Manage Purchase Orders Properly

When organisations fail to manage purchase orders properly, financial control becomes difficult.

Common problems include:

• Employees purchasing without approval
• Suppliers sending invoices without purchase references
• Difficulty reconciling transactions
• Limited audit trails for financial reporting

For example:

• A retail company in Sydney orders stock without approval and receives an invoice for $12,000.
• Without a purchase order, the finance team cannot confirm whether the purchase was authorised.

Managing purchase orders correctly helps finance teams:

• Control company spending
• Monitor budgets before purchases occur
• Maintain accurate supplier records
• Improve financial reporting
• Reduce payment disputes

Purchase orders also simplify invoice approvals when combined with structured workflows such as those described in our guide to invoice approval workflows for Australian finance teams.

The Purchase Order Lifecycle

To understand how to manage purchase orders effectively, it helps to review the full purchasing lifecycle.

1. Purchase Request

A department identifies a need and submits a purchase request.

The request usually includes:

• Description of the goods or services
• Estimated cost
• Supplier information
• Delivery date

For example, a Brisbane engineering firm might submit a purchase request for specialised equipment costing $4,500.

Before approval, finance teams should confirm budget availability.

2. Purchase Order Approval

Managers review the purchase request before approving the purchase.

Approval workflows typically include:

• Department manager
• Procurement manager
• Finance team

Structured approval workflows ensure spending follows company policy.

For example, purchases over $5,000 may require additional finance approval.

3. Purchase Order Creation

Once approved, the purchase order is created and sent to the supplier.

The purchase order confirms:

• What is being purchased
• Quantity required
• Agreed price
• Delivery details

Automated finance platforms allow businesses to generate purchase orders quickly without manual data entry.

4. Goods Receipt

When goods arrive, the receiving team confirms the delivery.

They check:

• Correct quantity
• Correct items
• Acceptable quality

For example, if a supplier in Perth delivers equipment to a mining services company, the receiving team verifies the shipment before the invoice is processed.

This stage ensures businesses only pay for goods that have actually been received.

5. Invoice Matching

When the invoice arrives, the accounts payable team performs three-way matching.

This compares:

• Purchase order
• Delivery record
• Supplier invoice

Three-way matching confirms the invoice is correct before payment.

You can learn more about this process in our guide to three-way matching in Australia.

Many organisations also use invoice processing software in Australia to automate invoice capture and matching.

6. Payment Processing

Once the invoice is approved, it enters the payment cycle.

Finance teams schedule payments according to supplier terms.

For example:

• 30-day payment terms
• End-of-month payment runs
• Early payment discounts

Automated systems help finance teams manage payments while maintaining cash flow.

Best Practices to Manage Purchase Orders

Finance teams can improve purchasing controls by following several practical strategies.

Standardise the Purchasing Process

Every purchase should follow a consistent workflow.

Typical process:

1. Purchase request submitted
2. Approval workflow
3. Purchase order created
4. Goods received
5. Invoice matched
6. Payment approved

Standardised processes reduce confusion and ensure compliance.

Set Clear Approval Limits

Businesses should define approval thresholds based on spending levels.

Example:

Spend LevelApproval RequiredUnder $1,000Department Manager$1,000 – $10,000Finance ManagerOver $10,000Director

Clear limits help organisations control spending while allowing routine purchases to move quickly.

Use Automated Purchasing Systems

Manual purchasing processes often rely on spreadsheets or email approvals.

Automated systems allow businesses to:

• Track purchase orders in real time
• Monitor departmental budgets
• Reduce manual data entry
• Improve approval speed

Many Australian finance teams combine purchasing and invoice automation as part of broader financial automation strategies.

Implement Three-Way Matching

Three-way matching ensures invoices are only paid when:

• The purchase order exists
• Goods were delivered
• The invoice amount matches the purchase order

This process prevents duplicate payments and billing errors.

Maintain Accurate Supplier Records

Finance teams should keep a central supplier database including:

• ABN details
• GST registration status
• Supplier payment terms
• Contact information

Maintaining accurate supplier records simplifies invoice reconciliation and BAS reporting.

Track Purchase Order Status

Finance teams should be able to track:

• Approved purchase orders
• Orders awaiting delivery
• Pending invoices
• Scheduled payments

Real-time visibility helps businesses manage budgets and forecast cash flow.

Common Purchase Order Management Challenges

Even well-organised finance teams encounter purchasing challenges.

Maverick Spending

Employees bypass the purchase order process and buy directly from suppliers.

This creates unexpected invoices.

Manual Data Entry

Entering purchase orders manually increases the risk of errors.

Automated systems reduce duplication and improve accuracy.

Limited Budget Visibility

Without purchase order tracking, departments may exceed budgets before finance teams are aware.

Purchase order systems allow businesses to see committed spending before invoices arrive.

Supplier Communication Issues

Suppliers sometimes send invoices without referencing purchase orders.

Clear PO numbering helps prevent confusion.

Final Thoughts

To manage purchase orders effectively, Australian businesses need clear processes and the right tools.

Strong purchase order management helps organisations:

• Control company spending
• Approve purchases faster
• Match invoices accurately
• Improve financial visibility