An audit is an evidence exercise
It helps to stop thinking of an audit as a search for mistakes. Think of it as an evidence exercise. The auditor forms an opinion on your financial statements. To support that opinion, they gather evidence for each material account. Once you see the pattern, the requests stop feeling random.
The assertions behind every request
For transactions and balances, auditors test some combination of:
- Existence / occurrence — the asset is real; the sale actually happened.
- Completeness — nothing is missing; all liabilities are recorded.
- Accuracy / valuation — amounts are right and carried at the correct value.
- Rights and obligations — you own the asset; the debt is yours.
- Cut-off — transactions are in the correct period.
- Presentation and disclosure — it’s classified and disclosed correctly.
When an auditor asks for a bank confirmation, they are testing whether cash exists. When they trace a December invoice to a January shipment, they are testing cut-off. Knowing the “why” lets you anticipate the “what.”
How they gather it: risk, materiality, and sampling
Auditors do not check everything. They set a materiality threshold and assess where the risk of error is highest. Then they choose the right steps: inspection, confirmation, recalculation, and analytical review. For the details they test, they usually pull a sample. Sampling is both a strength and a weakness. It is efficient, but it can miss items outside the sample. That is why testing 100% of transactions all year is such a useful upgrade over sample-based assurance.
The areas that always get attention
Three areas draw scrutiny in nearly every audit:
- Revenue — Auditing standards presume revenue recognition is a fraud risk, so expect cut-off testing and a close read of your ASC 606 policy.
- Management override of controls — Because leaders can bypass controls, auditors test journal entries and estimates for bias or manipulation (AU-C 240).
- Estimates — Allowances, reserves, impairments, and useful lives get challenged because they rely on judgment.
Be ready before they ask
The companies that sail through can produce evidence on demand. They have reconciliations tied to source, contracts linked to the revenue they support, and a journal entry log that shows preparer, approver, date, and rationale. If pulling that together means a two-week hunt through inboxes and sheets, the audit will be long and expensive. If it is a few exports, it will not.
Ressura runs the same tests auditors run — on 100% of your transactions, continuously — and keeps the evidence in one place. You walk into fieldwork already holding the answers.