Audit transaction cycles from source document to procedure
Map revenue, expenditure, payroll, and inventory flows to accounts, assertions, controls, and directional audit procedures.
The decision that earns the point
Identify the engagement facts and governing framework
A transaction-cycle question is solved by tracing how a transaction is initiated, authorized, processed, recorded, and reported, then identifying what could go wrong and which assertion is affected. The matching audit procedure follows the direction of the risk: from source documents to the ledger for completeness, or from recorded amounts back to support for occurrence or existence.
Exam use
AUD can test revenue and receipts, purchases and disbursements, payroll, inventory, production, financing, and investing through document flow, segregation of duties, walkthroughs, assertion risk, control tests, cutoff, and substantive procedures.
Your scratch-paper plan
Solve it in three moves
- 1
Trace the transaction and its documents
Identify initiation, authorization, custody, recording, processing, reporting, and the documents and systems connecting those functions.
PCAOB AS 2110: Identifying and Assessing Risks of Material Misstatement - 2
Convert the failure into an assertion risk
State what could go wrong, which account and assertion are affected, and whether the likely error is omission, invalid recording, wrong amount, classification, or cutoff.
PCAOB AS 2110: Identifying and Assessing Risks of Material Misstatement - 3
Choose a directional response
Test the relevant control and design substantive work whose population, direction, timing, and evidence directly address the stated risk.
PCAOB AS 2301: The Auditor's Responses to the Risks of Material Misstatement
Worked problem
Work the facts before choosing the answer
Goods with FOB shipping-point terms leave an issuer's warehouse on December 29, but the invoice and revenue entry are not created until January 3. The December shipping log includes the shipment, while the year-end sales journal does not.
CPAPass exam analysis using the stated assumptions
Show the work
The source document indicates a shipped transaction missing from the ledger at year-end. The assessed risk is understated revenue and receivables with a completeness and cutoff failure.
Rule source: PCAOB AS 2110: Identifying and Assessing Risks of Material MisstatementAnswer
Propose the year-end adjustment if the transaction belongs in December under the reporting framework, test neighboring shipments for the same cutoff failure, and evaluate the related billing control rather than vouching only recorded January sales backward.
Rule source: PCAOB AS 2301: The Auditor's Responses to the Risks of Material MisstatementDo it now
Test the same decision with a fresh question
Start with free AUD practice. Create an account only when you want the 5-day no-card CPAPass trial and continued section practice.
The trap and the repair
Common trap
Memorizing that “vouching tests occurrence” and “tracing tests completeness” without identifying the starting population can reverse the procedure in a real cycle question.
Repair
Write the likely missing or invalid item first, then choose the population where that item would still be visible and follow it in the needed direction.
Authority and scope boundary
PCAOB AS 2110 and AS 2301 control risk assessment and response in the issuer illustration. Current AU-C 315 and AU-C 330 are the separate nonissuer authorities. This page uses cycles to connect risks, assertions, controls, and procedures without replacing the broad procedure or internal-control owners.
2026 Uniform CPA Examination Blueprints and PCAOB AS 2110: Identifying and Assessing Risks of Material Misstatement were reviewed on 2026-08-14. Check a newer authority when the effective date or facts change.
Cycle-to-procedure map
Each cycle has a document trail and a predictable failure direction
Use the process and assertion to choose where the auditor starts and what evidence the procedure should produce.
| Cycle and risk | Assertion focus | Risk-responsive procedure | Authority |
|---|---|---|---|
| Revenue: shipped goods omitted from billing | Completeness and cutoff of revenue and receivables | Select shipping records around year-end and trace forward to invoices and the sales journal | PCAOB AS 2110: Identifying and Assessing Risks of Material MisstatementPCAOB AS 2301: The Auditor's Responses to the Risks of Material Misstatement |
| Purchasing: recorded vendor invoice lacks receipt | Occurrence, accuracy, and cutoff of purchases or payables | Vouch recorded entries to purchase authorization, receiving evidence, invoice, and terms | PCAOB AS 2110: Identifying and Assessing Risks of Material MisstatementPCAOB AS 2301: The Auditor's Responses to the Risks of Material Misstatement |
| Payroll: terminated employee remains in master file | Occurrence of payroll expense and existence of payment obligation | Compare HR termination data with payroll master and test post-termination payments | PCAOB AS 2110: Identifying and Assessing Risks of Material MisstatementPCAOB AS 2301: The Auditor's Responses to the Risks of Material Misstatement |
| Inventory: movement omitted during count | Completeness, existence, and cutoff of inventory records | Control count tags and movement records, observe procedures, and reconcile final count results | PCAOB AS 2110: Identifying and Assessing Risks of Material MisstatementPCAOB AS 2301: The Auditor's Responses to the Risks of Material Misstatement |
After a miss
Repair a transaction-cycle miss
- 1
Draw source document, authorization, custody, subledger, general ledger, and financial statement for the tested cycle.
- 2
Reverse the revenue illustration so a January shipment was recorded in December and identify how the starting population and assertion change.
- 3
Answer one fresh cycle question and write risk, account, assertion, starting population, direction, and expected evidence before checking the key.
Your exam workflow
- Step 1Identify the requirementIdentify initiation, authorization, custody, recording, processing, reporting, and the documents and systems connecting those functions.PCAOB AS 2110: Identifying and Assessing Risks of Material Misstatement
- Step 2Classify the factsState what could go wrong, which account and assertion are affected, and whether the likely error is omission, invalid recording, wrong amount, classification, or cutoff.PCAOB AS 2110: Identifying and Assessing Risks of Material Misstatement
- Step 3Apply the authorityTest the relevant control and design substantive work whose population, direction, timing, and evidence directly address the stated risk.PCAOB AS 2301: The Auditor's Responses to the Risks of Material Misstatement
- Step 4Check the outputPropose the year-end adjustment if the transaction belongs in December under the reporting framework, test neighboring shipments for the same cutoff failure, and evaluate the related billing control rather than vouching only recorded January sales backward.PCAOB AS 2301: The Auditor's Responses to the Risks of Material Misstatement
Keep the next step narrow
Quick questions
What is the key rule?
A transaction-cycle question is solved by tracing how a transaction is initiated, authorized, processed, recorded, and reported, then identifying what could go wrong and which assertion is affected. The matching audit procedure follows the direction of the risk: from source documents to the ledger for completeness, or from recorded amounts back to support for occurrence or existence.
How can this topic be tested on the CPA Exam?
AUD can test revenue and receipts, purchases and disbursements, payroll, inventory, production, financing, and investing through document flow, segregation of duties, walkthroughs, assertion risk, control tests, cutoff, and substantive procedures.
What mistake most often changes the result?
Memorizing that “vouching tests occurrence” and “tracing tests completeness” without identifying the starting population can reverse the procedure in a real cycle question. Write the likely missing or invalid item first, then choose the population where that item would still be visible and follow it in the needed direction.
Where should I practice the decision?
After the worked example, open the AUD free-practice link and work a fresh question that tests the same decision. If the miss depends on Audit procedures by assertion, review that handoff before trying another set.