How Sample Transaction Review Works
The process begins by defining the population from which transactions will be selected. The population might include vendor invoices, employee expenses, journal entries, payments, purchase orders, or revenue transactions for a particular reporting period. Reviewers then establish selection criteria and examine each chosen transaction against relevant accounting policies and supporting records.
- Define the transaction population and review period.
- Select transactions using appropriate sampling criteria.
- Inspect source documents, approvals, accounting entries, and supporting evidence.
- Compare transactions with applicable policies, contracts, and control requirements.
- Document exceptions, conclusions, and required follow-up actions.
A useful review distinguishes between documentation completeness and accounting accuracy. A transaction may have a valid invoice but still be posted to an inappropriate account, while another may be correctly classified but lack evidence of required authorization.
What Reviewers Examine
Transaction testing typically covers the complete financial trail from initiation through recording and settlement. For procurement-related transactions, this can include a requisition, purchase order, receiving evidence, invoice, approval, and payment record. Reviewing these documents together helps determine whether the transaction followed the organization's procure-to-pay controls.
For accounts payable testing, invoice processing may be assessed by examining invoice capture, data extraction, validation, purchase order matching, approval, posting, and payment. Reviewers can also evaluate whether gl coding correctly reflects the nature of the underlying transaction and supports reliable financial reporting.
Where transactions originate from purchasing activity, procurement controls can be evaluated alongside sourcing, approval thresholds, vendor selection, receiving, and spend authorization. This provides a broader view of whether the sampled transaction complied with the organization's financial control framework.
Sampling and Selection Considerations
Sample selection should align with the purpose of the review. A random sample can provide broad coverage of a transaction population, while targeted selection can focus attention on high-value transactions, unusual entries, new vendors, manual adjustments, or transactions posted near period end.
Reviewers should document why each sample was selected and preserve enough information to reproduce the testing approach. When the review involves a model, forecast, or analytical process, Out Of Sample Validation can provide a complementary perspective by testing whether conclusions remain reliable when applied beyond the observations used to develop them.
Interpreting Findings
Review results should distinguish isolated documentation issues from patterns that indicate a broader control or accounting concern. A single exception does not necessarily represent the entire population, while repeated exceptions involving the same account, vendor, location, or approval step may warrant expanded testing.
Transaction findings can also inform a broader P L Review by helping finance teams understand whether recorded expenses and other financial statement amounts are supported, appropriately classified, and consistent with accounting policies.
Business Use Cases and Controls
Sample Transaction Review is commonly used for month-end and year-end close activities, internal control testing, financial statement preparation, compliance reviews, audit support, and management reporting. It can be applied to an Expense Transaction to verify business purpose, supporting receipts, policy compliance, approval, coding, and posting.
For vendor management, maintaining Audit Trails helps preserve the sequence of actions associated with transactions and reviews, including human or AI-driven actions, approvals, and updates. This strengthens transparency and makes subsequent review more structured.
Best Practices
Effective transaction reviews use clearly defined criteria, consistent testing procedures, and documented conclusions. Reviewers should retain evidence showing the transaction selected, documents examined, control tested, exception identified, and final conclusion reached.
- Define the review objective before selecting the sample.
- Use selection criteria appropriate to the transaction population and risk profile.
- Trace sampled transactions from source documentation to the general ledger where relevant.
- Record exceptions using consistent classifications and supporting evidence.
- Compare recurring findings across periods to identify control improvement opportunities.
These practices help connect transaction-level testing with financial reporting accuracy, operational controls, and management decision-making.
Summary
Sample Transaction Review provides a practical method for evaluating the accuracy, authorization, classification, documentation, and control compliance of selected financial transactions. By defining the population, applying an appropriate sampling approach, tracing supporting evidence, and documenting conclusions, organizations can strengthen financial reporting and gain useful insight into the effectiveness of transaction-level controls.