Case Study: IRS Schedule C Audit — Small Retailer No-Change Result After Record Reconstruction

Illustrative composite — This case study combines facts from multiple real matters and anonymizes details. Individual outcomes depend on the specific facts, applicable state law, and procedural posture.

Case Study: IRS Schedule C Audit — Small Retailer No-Change Result After Record Reconstruction

Background and Facts

Our client operated a retail merchandise store in Bergen County, New Jersey for seven years, generating annual revenues of approximately $880,000 reported on Schedule C (Profit or Loss from Business). Like many small retailers, the business relied on a combination of point-of-sale systems, supplier invoices, and manual inventory records to track income and expenses. The owner maintained meticulous daily operations but had never undergone a federal tax audit and was uncertain about documentation standards expected by the IRS.

In mid-2023, the client received an IRS notice of examination. What began as a routine correspondence audit — typically limited to specific line items reviewed by mail — unexpectedly escalated into a full-scale field audit conducted at the client’s premises. During the examination phase, the IRS agent identified a significant gap in the Cost of Goods Sold (COGS) deduction claimed on the tax return. Of the $380,000 in COGS reported, the agent asserted that $140,000 lacked adequate contemporaneous documentation: missing supplier invoices, incomplete receiving records, and gaps in the inventory accounting ledger created a substantial compliance risk.

The turning point arrived when the IRS delivered a Form 4549 (IRS Adjustment to Income) proposing a $47,500 increase in federal tax liability, coupled with accuracy-related penalties and accrued interest. This threatened to impose a serious financial and operational burden on a business operating on typical retail margins. The client faced a critical decision: accept the adjustment, proceed to the Appeals Division, or engage specialized tax counsel to reconstruct the underlying records and challenge the deficiency at the examination stage.

Legal Issues and Applicable Authority

The core legal dispute centered on the taxpayer’s substantiation burden under the Internal Revenue Code and Treasury Regulations. The IRS agent’s authority to examine books and records is grounded in IRC Section 7602, which grants broad examination powers to investigate any matter relevant to tax liability. However, this authority is not unlimited. Section 6001 mandates that taxpayers maintain records sufficient to substantiate income, deductions, and credits claimed on their returns. The interplay between Section 7602 (auditor access) and Section 6001 (taxpayer record-keeping duty) creates a framework where the taxpayer bears the initial burden of production but only for records that reasonably exist or are within the taxpayer’s control.

Critically, the absence of original documents does not automatically result in disallowance. The precedent established in Cohan v. Commissioner, 39 F.2d 540 (2d Cir. 1930), which remains controlling authority in the Second Circuit covering New York and New Jersey, permits courts to estimate expenses based on available circumstantial evidence and credible reconstruction when precise records are unavailable through no fault of the taxpayer. Additionally, IRC Section 6213 outlines the taxpayer’s procedural rights during the statutory notice and deficiency framework. The relevant examination procedures codified in IRM Part 4 (Examining Process) establish that the IRS agent must consider all reasonable evidence and afford taxpayers opportunity to substantiate claimed deductions before finalizing proposed adjustments. These legal foundations became the scaffolding for our reconstruction and defense strategy.

• IRC Section 7602 — Authority to examine books, records, and witnesses
• IRC Section 6001 — Requirement to maintain records
• IRC Section 6213 — Restrictions on assessments and collection; statutory notice of deficiency
• IRM Part 4 — Internal Revenue Manual guidance on examination procedures and documentation standards
• Cohan v. Commissioner, 39 F.2d 540 (2d Cir. 1930) — Permissible estimation of expenses when contemporaneous records are absent

Song Law Firm’s Strategic Approach

Our engagement commenced with a comprehensive audit-authority and record-retention analysis under Sections 7602 and 6001. We examined the specific Information Document Requests (IDRs) issued by the IRS agent to confirm that the examination remained within proper boundaries and that the client had been afforded reasonable opportunity to locate and produce existing documentation. We conducted a parallel review of the agent’s Audit Workpapers to identify factual findings and the precise basis for the $140,000 COGS challenge. This intelligence revealed that the agent had not fully cross-referenced supplier statements or pursued secondary verification sources — a critical gap we could exploit through systematic reconstruction.

Our remedial strategy unfolded across multiple concurrent tracks. First, we engaged a forensic accountant to recover archived point-of-sale system data predating the audit period. Through technical recovery and data validation, we reconstructed daily transaction logs covering the disputed period, which established a credible baseline for inventory purchases. Second, we contacted all twelve of the client’s principal suppliers and obtained duplicate copies of invoices, delivery receipts, and year-end account statements. These third-party records, verified directly from the suppliers’ books, provided independent corroboration of COGS and eliminated any suggestion of fabrication. We then performed a meticulous physical inventory count at the client’s store and applied standard lower-of-cost-or-market valuation principles to recompute the ending inventory figure, which directly impacts COGS under the standard formula (Beginning Inventory + Purchases − Ending Inventory = COGS). During this process, we identified approximately $12,000 in personal expenses that had been incorrectly capitalized or commingled with business COGS — we reversed these to strengthen the business’s record-keeping credibility. Finally, before the agent moved the examination to the Appeals Division, we requested a pre-Appeals conference to present our reconstruction findings directly to the Field Agent. We prepared a detailed Form 886-A (Explanation of Items) that mapped our new documentation against each component of the original COGS claim, demonstrating substantial compliance and invoking the reasoning of Cohan for any residual gaps.

Outcome and Lessons for Small Business Owners

Following our presentation to the Field Agent, accompanied by comprehensive supplier statements, reconstructed point-of-sale data, physical inventory documentation, and our Form 886-A submission, the agent withdrew the proposed adjustment entirely. The client and the IRS executed Form 870 (Waiver of Restrictions on Assessment and Collection of Deficiency in Tax and Acceptance of Overassessment), resulting in a no-change audit outcome. No additional tax, penalties, or interest accrued. The case was closed at the examination stage without escalation to the Appeals Division, avoiding protracted administrative proceedings and preserving the client’s resources.

This case underscores several critical lessons for small retailers and service businesses operating on Schedule C. First, meticulous contemporaneous record-keeping — even if imperfect initially — provides the foundation for surviving IRS scrutiny. Second, when an audit escalates from correspondence to field examination, immediate engagement of qualified tax counsel and forensic accounting specialists can dramatically alter outcomes. Third, third-party verification (supplier statements, bank records, point-of-sale system data) carries far greater weight than taxpayer-generated documentation alone. Fourth, understanding IRS procedural rules and audit authority limits enables taxpayers to collaborate constructively with agents while preserving legal rights. Finally, proactive reconstruction and restatement of records, offered in good faith before the Appeals Division becomes involved, often results in favorable settlements because it demonstrates taxpayer reasonableness and reduces the agent’s confidence in a sustained deficiency position. Prior results do not guarantee similar outcomes.