Practices: The audit sampling is performed mainly HVAC experience of KTV: KTV usually choose the largest element to check balances (sampling special elements). Sampling risk leads to big discovery because it depends on the experience and qualifications of auditors.
Justification for Solution: According to Article 23, audit standards Vietnam 530: Audit Sampling and another alternative procedures: "When designing audit procedures, the auditor should determine appropriate methods for the selection of test elements. The method can be selected:
a, Choose whole (Test 100%);
b, Selection of particular elements;
c, Audit Sampling. "(Website: www.mof.gov.vn )
according to the auditing standards No. 530: 100% sampling is sampling all the components an account balance or a professional. Check 100% suitable for the following cases: Overall there are fewer elements, but the value of each major element; the potential risks and control risks are high and other methods can not provide appropriate evidence; when the calculation is repeated calculations or other processes can be performed by the computer system enables 100% inspection is still cost-effective. Audited unit signs of litigation and disputes; or at the request of customers.
Selecting special elements may include the selection of elements of large or important balance; All the funds are valued at a certain amount or more; appropriate elements for the purpose of gathering information: eg sampling to include information on issues such as the business situation, the content of the business, accounting systems and internal control systems of the audited units; The elements for the purpose of testing procedures and standards also stated: "27, The test is based on selection of special elements from an account balance or a business is often a powerful method results to collect audit evidence, but is not considered audit sampling. The results of the selection procedures applied to the particular element can not multiply the overall whole. KTV to consider collecting evidence relating to the remaining elements of the overall if the remaining elements are considered essential. "(Website: www.mof.gov.vn).
Sampling inspection shall include statistical sampling and non-statistical sampling.
Solution: KTV should incorporate methods to test selected elements presented in the rationale, especially the audit sampling methods. For Enterprise customers is the A and B Import Export Joint Stock Company, the possible application of statistical sampling methods or non-statistical uses than just sampling professional judgment.
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