CPA Exam Simulation Control Activities and Transaction Assertions
How do control activities map to transaction assertions? This CPA Exam simulation walks accounting students and CPA Exam candidates through control activities and transaction-related assertions, showing how real-world business scenarios connect to the five COSO control activities and audit assertions. A must-practice topic for the AUD section of the CPA Exam.
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Video Timeline & Key Concepts:
0:00 — Introduction and the five COSO control activities (segregation of duties, authorization, documentation, physical controls, independent checks)
1:41 — Check signing: president comparing documents as an independent check and segregation of duties
2:53 — Sales invoices: computer matching invoices to shipping documents (adequate documentation, occurrence)
3:37 — Receiving reports: pre-numbered reports reconciled daily support completeness
4:23 — Account reconciliation: monthly AR master file to general ledger as an independent check
5:25 — Restrictive endorsements: segregation of duties to prevent embezzlement and support completeness
7:09 — Payroll: HR-provided employee IDs create segregation of duties and support occurrence
Frequently Asked Questions:
What are the five COSO control activities?
The five control activities are segregation of duties, appropriate authorization, adequate documentation, physical control over assets, and independent checks on performance. These are the specific actions that help ensure management's directives are carried out.
What are transaction-related assertions?
Transaction-related assertions are management's claims about recorded transactions, including occurrence, completeness, accuracy, and cutoff or timeliness. Auditors design procedures to test whether controls support each assertion.
How does segregation of duties reduce fraud risk?
Segregation of duties splits responsibility for authorizing, recording, and holding custody of assets among different people. When no single individual controls all three, it becomes much harder for one person to commit and conceal fraud.
How do pre-numbered documents support completeness?
Pre-numbered documents that are accounted for and reconciled help ensure that every transaction is recorded and none is missing. Gaps in the sequence signal a potential completeness problem the auditor can investigate.
Why does linking payroll to HR-provided IDs matter?
Requiring valid employee IDs supplied by HR separates the payroll function from employee setup. This segregation of duties helps prevent fictitious or ghost employees and supports the occurrence assertion for payroll transactions.
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