Audit Evidence 2 (Sem 2) Flashcards
What is audit sampling?
What is sampling required for?
Audit sampling means testing ‘less than 100% of items within a class of transactions or account balance’ and drawing inferences about the whole population from such tests.
Sampling is required for efficiency purposes; testing everything would take too long!
Statistical Sampling
Any approach to sampling which includes: (2)
Anything that doesn’t is what?
Any approach to sampling which includes:
- Random selection of a sample
- Use of probability theory to evaluate results, e.g. so can say we are ‘95% confident result is correct, within the bounds of materiality’.
Anything which doesn’t adopt this approach is known as non-statistical sampling and is usually a matter of judgement.
What is sampling risk?
What tests do we have to combat it? (2,2)
For this reason…?
Sampling risk is the risk that the opinion formed on the basis of the sample chosen is different from that which would have been formed if the whole population had been checked.
Tests of control:
- Risk of over reliance
- Risk of under reliance
Substantive tests:
- Risk of incorrect acceptance
- Risk of incorrect rejection
For this reason, even judgemental samples attempt to be as haphazard and unbiased as possible.
Sample Size
What is it based on?
Higher sample gives…?
3 things to consider?
- Based on the level of risk that the firm will accept of not detecting an error.
- Higher sample gives lower risk and vice versa.
- Cost/benefit trade-off; should be efficient.
- Sampling tables exist
- Don’t always choose the same sample size!
What should the effect of errors do?
If the result is more than the… the auditor can:(4)
The effect of errors found should be extrapolated across the entire population. If the result is more than the tolerable error, the auditor can:
- Increase the sample size; although this is often not possible due to cost/benefit issues.
- Apply different substantive procedures to provide corroboration
- Request that the client adjusts the balance.
- If the client refuses to adjust the balance, can issue a qualified or adverse opinion.
When is sampling inappropriate?
The population is small, and it’s easier to test it all
- e.g. fixed asset additions/ disposals,
- or goodwill calculations.
Where no sampling risk can be accepted;
- e.g. in assurance assignment to discover fraud
- Rare in a financial statements audit.
Accounting estimates arise from… made by…rather than…eg: (4)
Accounting estimates arise from judgements made by management, rather than transactions with third parties. E.g.:
Depreciation of assets
- Management decides over how many years the asset will be used and how much it will be worth at the end of its useful life. This estimate affects the amount of depreciation expense recognized each year.
Doubtful debt provisions
- Management assesses the likelihood of customers defaulting on their payments based on historical data and current economic conditions.
Warranty claim provisions
- Management estimates the future costs that will be incurred to honor these warranties. This involves analyzing past warranty claims and predicting future claims based on current sales data.
Provisions for losses from lawsuit
- When a company is facing legal action, it needs to estimate the potential financial impact of the lawsuit. This involves assessing the likelihood of losing the case and the potential settlement or penalty amounts. These estimates are made based on legal advice and past experiences.
Accounting Estimates can be… (4) but they all involve and therefore?
Estimates can be simple or complex, routine or occasional, but they all involve judgement therefore the risk of misstatement is greater.
Three audit approaches:
1. Review and Test the process
- Understand how management arrived at the estimate, test assumptions, verify calculations, and review documentation.
2. Use an Independent Estimate for comparison
- Create an independent estimate and compare it with management’s to identify significant differences.
3. Review Subsequent Events
- Examine events after the balance sheet date to gather evidence supporting the estimate.
These can be used singly or in combination.
Review & Test Process (7)
- Evaluate the Data: using the normal criteria i.e. is it relevant, reliable, complete?
- Evaluate Assumptions: are they based on external or internal information?
- Test the Calculations
- Compare with prior periods
- Consider Approval Process: at appropriate level and documented?
- Compare with independent estimate
- Review subsequent event
Gathering Evidence - Receivables
- ________________ ______________ is an effective method of obtaining audit evidence.
- _________________, ___________ evidence is provided by the _________ on the ___________ ________.
- _______________ ___________ may not _________ with __________ ___________ – but ________ to __________ and ____ ____________ items.
What if the customer doesn’t reply?
- Receivables circularisation is an effective method of obtaining audit evidence.
- Independent, external evidence is provided by the customer on the balance owing.
- Customer balance may not agree with client balance – but possible to identify and test reconciling items.
- If customer doesn’t reply, follow-up procedures required.
Follow Up Procedures Include (4)
- Follow-up of circularisation letter by fax, e-mail or telephone
- Proving the balance owed by checking cash received from customer after the year end
- Agreeing balances owed back to original invoices
- Checking that invoices are supported by delivery notes and orders.
Summary Of Receivables Tests
Payables - Gathering Evidence (4)
- Suppliers usually send monthly statements to their clients, stating the balance outstanding.
- These are good evidence of existence and valuation.
- These should be reconciled (by the client) to the client’s records.
- Differences are usually due to timing but may represent errors.
Summary Of Payables Tests
Inventory - Gathering Evidence
What procedure should management establish?
The auditor should attend the ________ if inventory is ___________ ; gives evidence of: (3)
Management should establish procedures to ensure stock is physically counted at least once a year
The auditor should attend the count if inventory is material; gives evidence of:
- Reliability of accounting records
- Internal controls, e.g. over counting procedures
- Existence/completeness/cut-off/valuation.