finance-audit-support

name	finance-audit-support
description	Support SOX 404 compliance with control testing methodology, sample selection, and documentation standards. Use when generating testing workpapers, selecting audit samples, classifying control deficiencies, or preparing for internal or external audits.
author	Perplexity
version	1.0

Audit Support

SOX 404 control testing methodology, sample selection approaches, testing documentation standards, control deficiency classification, and common control types.

SOX 404 Control Testing Methodology

Overview

SOX Section 404 requires management to assess the effectiveness of internal controls over financial reporting (ICFR):

1. Scoping: Identify significant accounts and relevant assertions
2. Risk assessment: Evaluate the risk of material misstatement
3. Control identification: Document the controls that address each risk
4. Testing: Test the design and operating effectiveness of key controls
5. Evaluation: Assess whether any deficiencies exist and their severity
6. Reporting: Document the assessment and any material weaknesses

Scoping Significant Accounts

Quantitative factors:

• Account balance exceeds materiality threshold (typically 3-5%)
• Transaction volume is high
• Account is subject to significant estimates or judgment

Qualitative factors:

• Complex accounting (revenue recognition, derivatives, pensions)
• Susceptible to fraud (cash, revenue, related-party transactions)
• Prior misstatements or audit adjustments
• New account or significantly changed process

Sample Selection Approaches

Random Selection

• Default method for transaction-level controls with large populations
• Use a random number generator to select sample items
• Advantages: Statistically valid, defensible, no selection bias

Targeted (Judgmental) Selection

• High dollar amount, unusual transactions, period-end transactions
• Related-party, manual or override transactions
• Advantages: Focuses on highest-risk items

Sample Size Guidance

Control Frequency	Low Risk	Moderate Risk	High Risk
Annual	1	1	1
Quarterly	2	2	3
Monthly	2	3	4
Weekly	5	8	15
Daily	20	30	40
Per-transaction (large pop.)	25	40	60

Control Deficiency Classification

Deficiency

A gap in control design or operation that doesn't allow timely prevention or detection of misstatements.

Significant Deficiency

A deficiency less severe than a material weakness yet important enough to merit attention by governance.

Material Weakness

A deficiency where there is a reasonable possibility that a material misstatement will not be prevented or detected on a timely basis.

Indicators of Material Weakness:

• Identification of fraud by senior management
• Restatement of previously issued financial statements
• Identification by the auditor of a material misstatement not detected by controls
• Ineffective oversight by the audit committee

Common Control Types

IT General Controls (ITGCs)

• Access Controls: User access provisioning/de-provisioning, privileged access, periodic reviews
• Change Management: Change requests, testing, separation of dev/prod environments
• IT Operations: Batch job monitoring, backup and recovery, incident management

Manual Controls

Performed by people using judgment - review and approval:

• Management review of financial statements
• Supervisory approval of journal entries above a threshold
• Three-way match verification (PO, receipt, invoice)
• Account reconciliation preparation and review

Automated Controls

Enforced by IT systems without human intervention:

• System-enforced approval workflows
• Duplicate payment detection
• Credit limit enforcement
• Automated calculations (depreciation, amortization)