CAS 315 requires all five components of _____ internal control to be addressed and understood
COSO framework
what are the five components of COSO?
auditor uses his understanding of COSO to
identify potential errors or fraud and other irregularities that can increase risk material misstatement
the risk of material misstatement must be monitored at both
overall financial statement level and assertion level
once potential errors or fraud risks are identified
use to design the audit procedure to respond to the risks
items to understand information system and communication (7)
methods to document understanding of control activities (3)
def: narrative
written description of internal controls
what elements are included in narrative (4)
def: flowchart
diagrammatic representation of client’s documents and records and sequence in which processed
def: internal control questionnaire
series of questions about controls in each audit area
if questions in questionnaire are answered no?
failure of internal control so completeness objective not completed
how to evaluate if controls have been implemented
methods to evaluate implementation of controls (6)
before making preliminary assessment of control risk for each class of transactions
must see if entity is auditable
3 criteria for auditable entity
how to assess control risk at assertion level
control risk matrix
Def: control risk matrix
method used to help auditor assess control risk by matching key internal controls and internal control weaknesses with transaction related audit objectives
purpose of control risk matrix
provide a convenient way of organizing control risk for each assertion and related audit objective
process of assessing control risk with matrix
a C in control matrix means
affects the objective listed at the top
a D in control matrix means
deficiency
a lot of Ds means
increase in control risk depending on importance of deficiency
three levels of absence of internal controls (CAS 265)