Accounting Definitions for Audit, Assurance, Risk, and Evidence

Auditing Terms: Definitions, Procedures, and Examples

Explore auditing terms related to audit planning, materiality, audit risk, financial statement assertions, internal control, audit evidence, sampling, substantive procedures, tests of controls, fraud, estimates, documentation, audit opinions, assurance engagements, ethics, and practical examples.

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Auditing Terms Learning Path

Follow this sequence to understand audit objectives, risk assessment, evidence, conclusions, and reporting.

Understand Auditing

Learn the purpose of an audit, the auditor’s responsibilities, professional skepticism, independence, and reasonable assurance.

What Is Auditing? →

Assess Audit Risk

Study materiality, inherent risk, control risk, detection risk, fraud risk, and the entity’s internal control environment.

Explore Audit Risk →

Gather Audit Evidence

Understand inspection, observation, confirmation, recalculation, reperformance, inquiry, analytics, and sampling.

Explore Audit Evidence →

Conclude and Report

Evaluate misstatements, going concern, subsequent events, representations, audit opinions, and report modifications.

Explore Audit Reporting →

Major Types of Audit

Audit engagements may focus on financial statements, internal processes, compliance requirements, or operational performance.

Independent External Examination

Financial Statement Audit

An assurance engagement designed to support an opinion on whether financial statements are prepared under the applicable framework.

Organizational Assurance

Internal Audit

An independent and objective activity that evaluates governance, risk management, control, and operational processes.

Rules and Requirements

Compliance Audit

An engagement evaluating whether activities or information comply with specified laws, regulations, policies, or agreements.

Economy and Performance

Operational Audit

An examination of efficiency, effectiveness, economy, controls, and operational performance.

Browse Auditing Terms by Category

Use these collections to find related audit definitions, procedures, evidence concepts, and reporting terms.

Audit Planning Terms

Engagement acceptance, audit strategy, audit plan, understanding the entity, materiality, staffing, and timing.

Explore Audit Planning Terms →

Audit Risk Terms

Inherent risk, control risk, detection risk, significant risk, fraud risk, and risk of material misstatement.

Explore Audit Risk Terms →

Internal Control Terms

Control environment, risk assessment, control activities, information systems, monitoring, and control deficiencies.

Explore Internal Control Terms →

Audit Evidence Terms

Sufficiency, appropriateness, inspection, observation, confirmation, recalculation, reperformance, inquiry, and analytics.

Explore Audit Evidence Terms →

Audit Sampling Terms

Population, sampling unit, sample size, sampling risk, tolerable misstatement, expected error, and projection.

Explore Audit Sampling Terms →

Audit Procedure Terms

Tests of controls, substantive procedures, tests of details, analytical procedures, walkthroughs, and dual-purpose tests.

Explore Audit Procedure Terms →

Audit Reporting Terms

Unmodified opinion, qualified opinion, adverse opinion, disclaimer, emphasis paragraphs, and key audit matters.

Explore Audit Reporting Terms →

Assurance and Ethics Terms

Independence, objectivity, integrity, confidentiality, competence, professional skepticism, and assurance levels.

Explore Assurance and Ethics Terms →

Essential Auditing Terms

Start with these commonly used auditing and assurance definitions.

Audit

A systematic examination of information, records, controls, and evidence for a defined reporting or assurance objective.

View Definition → A

Auditing

The professional process of planning, performing, evaluating, and reporting on an audit engagement.

View Definition → A

Auditor

A qualified professional who performs audit or assurance procedures and reports the resulting conclusion.

View Definition → E

External Audit

An audit performed by an independent auditor for users outside the entity.

View Definition → I

Internal Audit

An independent and objective activity evaluating governance, risk management, control, and operations.

View Definition → F

Financial Statement Audit

An audit designed to support an opinion on financial statements under an applicable reporting framework.

View Definition → C

Compliance Audit

An engagement evaluating compliance with specified requirements, laws, regulations, policies, or contracts.

View Definition → O

Operational Audit

An examination of operational economy, efficiency, effectiveness, and control.

View Definition → F

Forensic Audit

A focused examination intended to investigate suspected fraud, misconduct, disputes, or financial irregularities.

View Definition → A

Assurance Engagement

An engagement in which a practitioner obtains evidence and expresses a conclusion intended to enhance user confidence.

View Definition → R

Reasonable Assurance

A high but not absolute level of assurance obtained through sufficient appropriate evidence.

View Definition → L

Limited Assurance

A lower level of assurance than reasonable assurance, generally supported by less extensive procedures.

View Definition → A

Audit Objective

The intended result of audit work for a financial statement area, assertion, control, or engagement.

View Definition → A

Audit Scope

The boundaries, coverage, timing, locations, periods, accounts, systems, and procedures included in an audit.

View Definition → A

Audit Criteria

The benchmarks or requirements against which information or performance is evaluated.

View Definition → A

Applicable Financial Reporting Framework

The accounting framework used to prepare and present the financial statements.

View Definition → M

Management Responsibility

Management’s responsibility for preparing financial statements and maintaining relevant internal control.

View Definition → A

Auditor Responsibility

The auditor’s responsibility to perform the engagement and report in accordance with applicable professional requirements.

View Definition → P

Professional Judgment

The application of training, knowledge, and experience to make informed audit decisions.

View Definition → P

Professional Skepticism

A questioning mindset and critical assessment of audit evidence.

View Definition → I

Independence

Freedom from relationships or influences that compromise professional judgment or objectivity.

View Definition → I

Independence in Fact

The auditor’s actual ability to act objectively and without bias.

View Definition → I

Independence in Appearance

The avoidance of circumstances that would cause an informed observer to question independence.

View Definition → I

Integrity

The ethical principle of honesty and straightforward professional conduct.

View Definition → O

Objectivity

The avoidance of bias, conflicts of interest, and undue influence.

View Definition → C

Confidentiality

The obligation to protect information obtained through professional work.

View Definition → P

Professional Competence

The knowledge, skill, and diligence required to perform professional services properly.

View Definition → D

Due Professional Care

The careful and competent performance expected from a professional auditor.

View Definition → E

Engagement Acceptance

The process of deciding whether to accept or continue an audit engagement.

View Definition → E

Engagement Letter

A written agreement documenting the objective, scope, responsibilities, and terms of the engagement.

View Definition → A

Audit Strategy

The overall direction, scope, timing, and resource approach for the audit.

View Definition → A

Audit Plan

A detailed description of the nature, timing, and extent of planned audit procedures.

View Definition → A

Audit Program

A structured list of procedures designed for specific audit areas or objectives.

View Definition → P

Planning Materiality

The materiality amount established for planning the overall audit.

View Definition → M

Materiality

The magnitude or nature of information that could reasonably influence users’ decisions.

View Definition → P

Performance Materiality

An amount set below overall materiality to reduce the risk that uncorrected and undetected misstatements exceed materiality.

View Definition → T

Tolerable Misstatement

The maximum misstatement accepted in a population or audit area for sampling or testing purposes.

View Definition → C

Clearly Trivial Misstatement

A misstatement below a level considered inconsequential individually and in aggregate.

View Definition → A

Audit Risk

The risk that the auditor expresses an inappropriate opinion when financial statements are materially misstated.

View Definition → R

Risk of Material Misstatement

The combined risk that material misstatement exists before considering the auditor’s procedures.

View Definition → I

Inherent Risk

The susceptibility of an assertion to material misstatement before considering related controls.

View Definition → C

Control Risk

The risk that a material misstatement will not be prevented or detected and corrected by internal control.

View Definition → D

Detection Risk

The risk that audit procedures will not detect an existing material misstatement.

View Definition → S

Significant Risk

An identified risk requiring special audit consideration because of its nature or assessed level.

View Definition → F

Fraud Risk

The risk of material misstatement arising from fraudulent financial reporting or misappropriation of assets.

View Definition → B

Business Risk

A condition or event that could adversely affect the entity’s objectives, strategy, or operations.

View Definition → A

Assertion

A representation by management embodied in financial statements and related disclosures.

View Definition → E

Existence Assertion

The assertion that recorded assets, liabilities, and equity interests exist.

View Definition → O

Occurrence Assertion

The assertion that recorded transactions and events occurred and relate to the entity.

View Definition → C

Completeness Assertion

The assertion that all amounts and disclosures that should be recorded have been included.

View Definition → R

Rights and Obligations Assertion

The assertion that the entity holds rights to assets and obligations for liabilities.

View Definition → A

Accuracy Assertion

The assertion that amounts and related data have been recorded appropriately.

View Definition → V

Valuation Assertion

The assertion that assets, liabilities, and equity interests are included at appropriate amounts.

View Definition → C

Classification Assertion

The assertion that transactions and balances are recorded in the proper accounts or categories.

View Definition → C

Cutoff Assertion

The assertion that transactions and events are recorded in the correct reporting period.

View Definition → P

Presentation Assertion

The assertion that information is appropriately presented, described, and disclosed.

View Definition → I

Internal Control

Processes designed to provide reasonable assurance regarding operations, reporting, and compliance objectives.

View Definition → C

Control Environment

The governance, ethical values, structure, and tone influencing the control system.

View Definition → E

Entity Risk Assessment

The entity’s process for identifying and responding to business and reporting risks.

View Definition → C

Control Activity

A policy or procedure designed to address a risk and support management directives.

View Definition → I

Information and Communication

Systems and processes that identify, capture, process, and communicate relevant information.

View Definition → M

Monitoring Activities

Processes that evaluate whether controls are designed and operating effectively.

View Definition → P

Preventive Control

A control designed to prevent an error, fraud, or unauthorized event before it occurs.

View Definition → D

Detective Control

A control designed to identify errors or irregularities after they occur.

View Definition → C

Corrective Control

A control designed to correct identified problems and prevent recurrence.

View Definition → M

Manual Control

A control performed primarily by a person rather than an automated system.

View Definition → A

Automated Control

A control performed by an information system according to programmed logic.

View Definition → G

General IT Controls

Controls over system access, program changes, operations, development, and technology infrastructure.

View Definition → A

Application Control

A programmed control over transaction input, processing, authorization, or output.

View Definition → S

Segregation of Duties

The separation of authorization, custody, recording, and review responsibilities.

View Definition → A

Authorization Control

A control requiring approval before a transaction or activity proceeds.

View Definition → R

Reconciliation Control

A control comparing records and resolving differences.

View Definition → M

Management Review Control

A control involving management review of reports, estimates, reconciliations, or performance.

View Definition → C

Control Design

The structure of a control and its ability to address the related risk.

View Definition → I

Implementation of Control

The placement of a designed control into actual operation.

View Definition → O

Operating Effectiveness

The extent to which a control operates consistently and as intended.

View Definition → C

Control Deficiency

A design or operating issue that prevents a control from addressing risk appropriately.

View Definition → S

Significant Deficiency

A control deficiency important enough to merit attention by those charged with governance.

View Definition → M

Material Weakness

A control deficiency or combination of deficiencies creating a reasonable possibility that a material misstatement will not be prevented or detected timely.

View Definition → W

Walkthrough

A procedure tracing a transaction through the process to understand systems and controls.

View Definition → F

Flowchart

A visual representation of transaction flows, processes, systems, and controls.

View Definition → I

Internal Control Questionnaire

A structured set of questions used to document and evaluate internal control.

View Definition → A

Audit Evidence

Information used by the auditor to support conclusions and the audit opinion.

View Definition → S

Sufficiency of Evidence

The quantity of audit evidence obtained.

View Definition → A

Appropriateness of Evidence

The quality of audit evidence, including relevance and reliability.

View Definition → R

Relevance of Evidence

The degree to which evidence relates to the audit objective or assertion.

View Definition → R

Reliability of Evidence

The degree to which evidence can be trusted based on its source and nature.

View Definition → I

Inspection

The examination of records, documents, or tangible assets.

View Definition → O

Observation

Watching a process or procedure being performed by others.

View Definition → E

External Confirmation

Audit evidence obtained through a direct written response from an independent third party.

View Definition → P

Positive Confirmation

A confirmation request asking the recipient to respond whether agreeing or disagreeing.

View Definition → N

Negative Confirmation

A confirmation request asking for a response only when the recipient disagrees.

View Definition → R

Recalculation

Checking the mathematical accuracy of documents, records, or calculations.

View Definition → R

Reperformance

Independently executing a procedure or control originally performed by the entity.

View Definition → I

Inquiry

Seeking financial or nonfinancial information from knowledgeable persons.

View Definition → A

Analytical Procedure

The evaluation of plausible relationships among financial and nonfinancial data.

View Definition → S

Substantive Analytical Procedure

An analytical procedure designed to detect material misstatement at the assertion level.

View Definition → E

Expectation

The auditor’s predicted amount or relationship used in analytical procedures.

View Definition → I

Investigation of Differences

The process of explaining significant differences between recorded amounts and expectations.

View Definition → V

Vouching

Tracing recorded transactions back to supporting documents, often emphasizing occurrence.

View Definition → T

Tracing

Following source documents forward into accounting records, often emphasizing completeness.

View Definition → S

Scanning

Reviewing accounting data for unusual, unexpected, or significant items.

View Definition → A

Audit Sampling

Applying audit procedures to less than all items in a population to draw a conclusion about the population.

View Definition → P

Population

The entire set of data from which an audit sample is selected.

View Definition → S

Sampling Unit

An individual item or unit available for selection from a population.

View Definition → S

Sample Size

The number of sampling units selected for testing.

View Definition → S

Sampling Risk

The risk that a conclusion based on a sample differs from the conclusion from testing the entire population.

View Definition → N

Nonsampling Risk

The risk of an incorrect audit conclusion for reasons unrelated to sampling.

View Definition → R

Random Selection

A selection method giving population items a known or equal chance of selection.

View Definition → S

Systematic Selection

A selection method choosing items at a fixed interval after a starting point.

View Definition → H

Haphazard Selection

A nonstructured selection approach intended to avoid conscious bias.

View Definition → B

Block Selection

Selection of a contiguous group of items from the population.

View Definition → S

Statistical Sampling

Sampling using probability-based selection and mathematical evaluation.

View Definition → N

Nonstatistical Sampling

Sampling based on professional judgment without formal probability measurement.

View Definition → A

Attribute Sampling

Sampling used primarily to estimate the occurrence rate of a control attribute.

View Definition → V

Variables Sampling

Sampling used primarily to estimate monetary misstatement in a population.

View Definition → M

Monetary Unit Sampling

A statistical method in which each monetary unit has a chance of selection.

View Definition → E

Expected Deviation Rate

The anticipated rate of control deviations in a population.

View Definition → T

Tolerable Deviation Rate

The maximum control deviation rate the auditor is willing to accept.

View Definition → P

Projected Misstatement

An estimate of population misstatement based on sample results.

View Definition → T

Test of Controls

A procedure designed to evaluate the operating effectiveness of a control.

View Definition → S

Substantive Procedure

A procedure designed to detect material misstatements at the assertion level.

View Definition → T

Test of Details

A substantive procedure applied to transaction classes, balances, or disclosures.

View Definition → D

Dual-Purpose Test

A procedure designed to test both control effectiveness and substantive accuracy.

View Definition → I

Interim Testing

Audit testing performed before the reporting date.

View Definition → R

Roll-Forward Procedure

A procedure extending interim audit conclusions to the reporting date.

View Definition → U

Unpredictable Audit Procedure

A procedure added to reduce predictability and address fraud risk.

View Definition → J

Journal Entry Testing

Procedures evaluating journal entries and adjustments for fraud or error risk.

View Definition → A

Accounting Estimate Audit

Audit work addressing assumptions, methods, data, and uncertainty in accounting estimates.

View Definition → M

Management Bias

A lack of neutrality in management judgments or estimates.

View Definition → R

Related Party Transaction

A transaction between the entity and a person or organization with a related relationship.

View Definition → G

Going Concern

The assumption that the entity will continue operating for the foreseeable future.

View Definition → G

Going Concern Uncertainty

A condition or event that may cast significant doubt on the entity’s ability to continue operating.

View Definition → S

Subsequent Event

An event occurring after the reporting date but before financial statements are authorized or issued.

View Definition → C

Contingency

An uncertain condition whose resolution depends on future events.

View Definition → L

Legal Letter

A communication with legal counsel used to obtain evidence about litigation, claims, and assessments.

View Definition → M

Management Representation Letter

A written confirmation from management regarding responsibilities and specific representations.

View Definition → T

Those Charged with Governance

Persons responsible for overseeing the entity’s strategic direction and accountability obligations.

View Definition → A

Audit Committee

A governance committee overseeing financial reporting, internal control, and the audit process.

View Definition → C

Communication with Governance

Required or appropriate communication of audit matters to those charged with governance.

View Definition → M

Misstatement

A difference between reported information and the amount, classification, presentation, or disclosure required.

View Definition → F

Factual Misstatement

A misstatement about which there is no doubt.

View Definition → J

Judgmental Misstatement

A difference arising from management judgments considered unreasonable or inappropriate.

View Definition → P

Projected Misstatement

A misstatement estimate projected from a sample to the population.

View Definition → U

Uncorrected Misstatement

A detected misstatement not corrected by management.

View Definition → A

Aggregate Misstatement

The combined effect of identified and projected misstatements.

View Definition → A

Audit Difference

A difference identified through audit procedures between recorded and expected or appropriate information.

View Definition → A

Audit Documentation

The record of procedures performed, evidence obtained, and conclusions reached.

View Definition → W

Working Paper

A document forming part of the auditor’s engagement documentation.

View Definition → P

Permanent Audit File

Documentation containing information relevant to multiple audit periods.

View Definition → C

Current Audit File

Documentation primarily relevant to the current engagement period.

View Definition → P

Prepared by Client Schedule

A schedule prepared by the entity and used in the audit subject to appropriate evaluation.

View Definition → I

Indexing

The organized coding of audit documentation for reference and retrieval.

View Definition → C

Cross-Referencing

The linking of related audit procedures, evidence, findings, and conclusions.

View Definition → R

Review Note

A question or instruction raised during review of audit documentation.

View Definition → E

Engagement Quality Review

An objective evaluation of significant judgments and conclusions before the report is issued.

View Definition → A

Audit Conclusion

The auditor’s final evaluation for an objective, assertion, account, or engagement.

View Definition → A

Audit Opinion

The conclusion expressed by the auditor on the financial statements.

View Definition → U

Unmodified Opinion

An opinion indicating that the financial statements are presented appropriately under the applicable framework.

View Definition → Q

Qualified Opinion

A modified opinion used when a matter is material but not pervasive.

View Definition → A

Adverse Opinion

A modified opinion used when material and pervasive misstatements exist.

View Definition → D

Disclaimer of Opinion

A report in which the auditor does not express an opinion because sufficient appropriate evidence was not obtained or independence is impaired.

View Definition → M

Modified Opinion

A qualified opinion, adverse opinion, or disclaimer of opinion.

View Definition → S

Scope Limitation

A restriction preventing the auditor from obtaining required evidence.

View Definition → P

Pervasive Effect

An effect that is not confined to specific elements or represents a substantial part of the financial statements.

View Definition → E

Emphasis of Matter Paragraph

A paragraph drawing attention to a matter appropriately presented or disclosed that is fundamental to users’ understanding.

View Definition → O

Other Matter Paragraph

A paragraph addressing a matter outside the financial statements relevant to users’ understanding of the audit or report.

View Definition → K

Key Audit Matter

A matter of most significance in the audit selected from matters communicated with governance.

View Definition → C

Critical Audit Matter

A matter arising from the audit communicated or required to be communicated to the audit committee and involving especially challenging judgment under applicable requirements.

View Definition → O

Other Information

Financial or nonfinancial information included with audited statements but outside the audited financial statements.

View Definition → C

Comparative Information

Prior-period amounts and disclosures presented with current-period financial statements.

View Definition → C

Component Auditor

An auditor performing work on financial information of a component for a group audit.

View Definition → G

Group Audit

An audit of financial statements that include financial information of more than one component.

View Definition → G

Group Engagement Team

The audit team responsible for directing, supervising, and reporting on the group audit.

View Definition → C

Component Materiality

Materiality established for a component in a group audit.

View Definition → S

Service Organization

An external organization providing services relevant to a user entity’s information system or controls.

View Definition → S

Service Auditor Report

A report on controls at a service organization for use by user entities and their auditors.

View Definition → C

Compliance Framework

A framework requiring compliance with specified presentation and measurement requirements.

View Definition → F

Fair Presentation Framework

A framework acknowledging that additional disclosure or limited departure may be necessary for fair presentation.

View Definition →

Connect Every Audit Term to Risk, Evidence, and Reporting

Auditing definitions become more useful when connected to a clear audit objective, relevant assertion, assessed risk, materiality level, internal control, planned procedure, sufficient appropriate evidence, identified misstatement, documented conclusion, professional judgment, and the final audit report.

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Frequently Asked Questions About Auditing Terms

What is auditing?

Auditing is the systematic process of planning and performing procedures, obtaining and evaluating evidence, forming conclusions, and reporting for a defined financial, operational, compliance, or assurance objective.

What is audit risk?

Audit risk is the risk that the auditor expresses an inappropriate opinion when the financial statements contain a material misstatement.

What makes audit evidence sufficient and appropriate?

Sufficiency refers to the quantity of evidence. Appropriateness refers to its quality, including relevance and reliability for the audit objective.

What is the difference between tests of controls and substantive procedures?

Tests of controls evaluate whether controls operated effectively. Substantive procedures are designed to detect material misstatements in transactions, balances, and disclosures.

What are the main types of audit opinion?

The main reporting outcomes include an unmodified opinion and the modified opinions: qualified opinion, adverse opinion, and disclaimer of opinion.

Continue to Tax Terms

After learning how auditors assess risk, evaluate controls, obtain evidence, and report conclusions, continue with Tax Terms to study taxable income, deductions, credits, tax liabilities, deferred taxes, filing, compliance, and tax accounting terminology.

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