Manufacturing Audits: Common Issues and Frequently Asked Questions

Assurance Services

Questions about manufacturing audits usually concern requirements, scope, assurance, timing, records, and the meaning of the final report. This page addresses the most common issues in plain English and identifies the decisions management should settle before engaging a CPA.

The issues that deserve attention first

Manufacturing audits connect purchasing, receiving, production, labor, overhead, inventory, shipping, billing, quality, and financial close. Inventory often drives both the balance sheet and gross margin, making accurate quantities, standard or actual costs, overhead absorption, obsolescence, and cutoff central to the engagement.

The most effective response is not to create more year-end spreadsheets. It is to establish a close process in which operational records, subsidiary systems, the general ledger, and the financial statements reconcile on a repeatable schedule.

• Inventory counts performed without controlled instructions, cutoff, or investigation of differences
• Standard costs and overhead rates not updated for current operations
• Obsolete or excess items identified operationally but not reflected in the reserve
• Sales recorded before control transfers or returns and credits recorded in the wrong period
• Unmatched receipts, unpaid invoices, warranty obligations, or purchase commitments omitted at year-end

How to reduce the risk

Management can improve both reporting quality and audit efficiency through a small number of durable practices:

• Close and reconcile significant accounts monthly, with evidence of preparation and review
• Maintain current contracts, policies, minutes, approvals, estimates, and third-party reports in a controlled repository
• Assign ownership for every material schedule and document the source, method, assumptions, and review
• Investigate unusual trends and old reconciling items before the auditor asks about them
• Communicate new transactions, disputes, financing, system changes, control failures, and suspected fraud promptly
• Perform a pre-audit quality review using the prior-year adjustments and management comments as a checklist

Frequently asked questions

Must auditors attend the physical inventory?

When inventory is material, auditing standards ordinarily require the auditor to obtain evidence about existence and condition, often through attendance at physical inventory counting unless alternative procedures are appropriate in the circumstances.

Can cycle counts replace a year-end count?

They may support reliable perpetual records when the program is well designed, differences are investigated, controls operate throughout the year, and the auditor can obtain sufficient evidence. This should be planned in advance.

How is obsolete inventory evaluated?

Management should combine aging, usage, forecasts, engineering changes, customer demand, selling prices, disposal history, and item-specific knowledge. The auditor tests the data and assumptions supporting the reserve.

Why does overhead absorption matter?

Inventory cost can include appropriate production overhead. Weak rates or volume assumptions can distort inventory and gross margin, especially when production changes materially.

What if inventory is held by a third party?

Prepare location and ownership records early. The auditor may use confirmations, physical observation, service-auditor reports, shipping documents, or other procedures depending on materiality and risk.

How can management avoid count-day disruption?

Freeze or tightly control movements, pre-number tags, clean locations, identify obsolete goods, test scanners, assign count teams, document cutoff numbers, and complete a mock count beforehand.

Questions to ask a prospective CPA firm

The engagement partner should be able to answer practical questions before appointment:

• What experience does the team have with manufacturing audits and the applicable reporting framework?
• Which standards, regulatory guides, contractual provisions, or submission requirements will govern the work?
• Who will manage the engagement day to day, and when will the partner communicate with management and governance?
• What information is needed before fieldwork, what will be selected later, and how will secure documents be exchanged?
• What assumptions support the fee and timetable, and how will scope changes or readiness problems be handled?
• What independence, licensing, peer review, quality management, specialist, or continuing education considerations apply?

Choosing the right assurance level

An audit provides reasonable assurance and an opinion on the financial statements. A review provides limited assurance principally through inquiry and analytical procedures. A compilation presents financial information with no assurance. Compliance examinations, agreed-upon procedures, single audits, and program-specific engagements have different objectives and should not be substituted solely because their names sound similar.

Start with the exact user requirement and the decision the report must support. Selecting too little assurance can lead to rejection and rework; selecting more than users need can add cost and time without a corresponding benefit.

Next step

Schedule a scoping discussion with Dohan CPA to review the reporting requirement, intended users, current records, prior reports, and deadline for manufacturing audits. The firm should confirm engagement acceptance, independence, staffing, and final scope before any service is promised.

Authoritative sources

• FASB: Accounting Standards Updates Issued - Financial Accounting Standards Board
• FASB: Revenue Recognition - Financial Accounting Standards Board
• AICPA: What is the difference between a compilation, review, and audit? - AICPA & CIMA

General educational information only. This page is not accounting, auditing, tax, investment, or legal advice and does not create a CPA-client relationship. Requirements and standards can change and depend on specific facts and agreements.