For many lower middle market business owners, the company’s CPA firm is one of the most trusted professional advisors in their life. The CPA may have prepared the company’s tax returns for years, helped with payroll questions, supported the company through audits or bank requests, and advised ownership on ordinary business decisions. But when a business owner begins preparing for a sale, the role of the CPA changes dramatically.

A sale transaction is not ordinary tax compliance. It is not simply year-end accounting. It is not just producing financial statements or filing the next return. M&A places a company’s accounting, tax position, earnings quality, working capital, customer deposits, revenue recognition, inventory accounting, payroll practices, corporate structure, and tax history under the microscope.

In this environment, a strong CPA firm can protect value, reduce surprises, and help ownership make better decisions. A CPA firm without M&A experience can unintentionally create delays, pricing reductions, tax inefficiencies, or even deal failure.

The CPA Firm’s Core Functions in an M&A Transaction

A strong CPA firm should help the seller understand how buyers, lenders, and deal professionals will view the company’s financial information. This is particularly important because many privately held businesses maintain their books primarily for tax reporting, not for transaction readiness.

In the M&A process, the CPA firm may assist with:

1. Normalizing Financial Statements

Buyers do not only look at tax returns. They want to understand the company’s true earnings power.

A capable CPA can help identify:

Owner-related expenses
Non-recurring expenses
Discretionary items
Unusual accounting treatments
Timing issues that may distort EBITDA

2. Supporting Quality of Earnings Review

In many M&A transactions, buyers commission a Quality of Earnings report to test whether reported EBITDA is accurate, recurring, and sustainable.

QoE findings can directly affect:

Purchase price
Deal structure
Lender confidence
Negotiations

3. Reviewing Revenue Recognition

Revenue recognition can be a major issue in manufacturing, construction-related, engineering, distribution, and custom-order businesses.

Under GAAP revenue guidance, revenue is generally recognized based on the transfer of promised goods or services to the customer, not merely when cash is received. FASB’s Topic 606 establishes principles for reporting the nature, amount, timing, and uncertainty of revenue and cash flows from customer contracts. (FASB)

This matters because a company that records customer deposits as revenue before work is performed may appear more profitable than it actually is during a particular period.

A buyer’s diligence team will usually identify this issue, and when they do, the result may be:

A reduction in EBITDA
A working capital adjustment
A loss of credibility
A more aggressive escrow demand

4. Identifying Tax Structuring Issues Before the LOI Is Signed

A CPA familiar with M&A can help ownership understand the likely tax consequences of:

An asset sale
Stock sale
Equity rollover
Installment sale
Earnout
Pre-closing restructuring

The structure of a transaction can significantly affect after-tax proceeds. Waiting until the purchase agreement is being negotiated is often too late.

5. Supporting Purchase Price Allocation

In an asset sale, buyer and seller must often report the allocation of purchase price among asset classes.

IRS Form 8594 is used by both buyer and seller in certain transfers of a group of assets constituting a trade or business when goodwill or going concern value attaches, or could attach. (IRS)

This is not a minor administrative matter.

Allocation affects:

Depreciation
Amortization
Ordinary income
Capital gain
Potential recapture

A seller’s CPA should be involved before the allocation becomes a negotiated point of leverage.

6. Preparing for Lender Scrutiny

Acquisition lenders typically review:

Historical tax returns
Interim financials
Working capital
Debt schedules
Payroll taxes
Sales tax compliance
Inventory
Receivables
Customer concentration
Addbacks

A CPA firm that understands acquisition lending can help the seller anticipate what will be requested and address problems before they become buyer concerns.

7. Reconciling Tax Returns to Financial Statements

Differences between tax returns, internal financial statements, and management reports are common in privately held companies.

Some differences are explainable. Others raise red flags.

A strong CPA helps reconcile those differences clearly so buyers do not assume the worst.

Where Problems Arise When the CPA Firm Is Not M&A-Experienced

The greatest risk is not usually that the CPA firm is careless or unqualified. Many excellent tax preparers and small-business CPAs are very good at annual compliance. The problem is that M&A requires a different lens.

A CPA who is focused only on minimizing annual taxable income may not be preparing the company for the way buyers value businesses.

Buyers typically value lower middle market companies based on:

Adjusted EBITDA
Cash flow
Working capital
Perceived risk

Accounting choices that may have been acceptable for tax purposes can create problems when the business is being sold.

Common Problems Include

Revenue Recorded Too Early

Customer deposits, progress payments, retainers, or advance payments may have been treated as revenue before the related performance obligation was satisfied.

This can overstate revenue and EBITDA in one period and understate it in another.

Inventory Not Properly Accounted For

Manufacturers can have issues with:

Raw materials
Work-in-process
Finished goods
Obsolete inventory
Slow-moving inventory
Freight-in
Labor burden
Overhead absorption
Lower-of-cost-or-market adjustments

If inventory accounting is weak, buyers may question both gross margin and working capital.

Cash-Basis Books Used to Support an Accrual-Basis Valuation

Some companies are permitted to file tax returns using the cash method, but M&A buyers often analyze performance on an accrual basis.

The IRS requires taxpayers to follow consistent accounting methods and generally use Form 3115 to request a change in an overall accounting method or the treatment of an accounting item. (IRS)

If the company has been using a method that does not fairly present operating performance for transaction purposes, the seller may need to normalize the financials well before going to market.

Customer Deposits Treated Incorrectly

This is one of the most common and damaging issues in manufacturing transactions.

If customer deposits have been recognized as income when received, but the product has not been shipped or the work has not been completed, the company’s reported profit may not reflect true performance.

It may also create working capital complications because the buyer may inherit the obligation to perform the work after closing.

Personal Expenses and Addbacks Not Documented

Many privately held companies run discretionary expenses through the business.

Some are legitimate addbacks. Others are not.

The CPA can help identify, document, and support addbacks so they are not dismissed by buyers as unsupported seller claims.

Tax Liabilities Discovered Late

Sales tax exposure, payroll tax classification issues, state nexus problems, unfiled returns, questionable deductions, related-party transactions, or improper accounting methods can become major diligence issues.

The later they are discovered, the more damaging they become.

Entity Structure Problems

The tax difference between an asset sale and a stock sale can be substantial.

C corporations, S corporations, LLCs, partnerships, family ownership, trusts, related-party real estate, and rollover equity all require careful tax planning.

A CPA who is unfamiliar with M&A tax structuring may miss planning opportunities that could materially affect the seller’s net proceeds.

The Danger of a Passive CPA Relationship

One of the most sensitive issues in M&A occurs when a CPA firm has prepared the company’s financial statements and tax returns for years but never advised the owner that certain procedures should be corrected.

This can create several problems.

First, the seller may assume that because the CPA prepared the returns, the company’s accounting practices are fully acceptable for a sale process.

That assumption may be wrong.

There is a significant difference between:

Preparing tax returns
Preparing financial statements
Compiling financial statements
Reviewing financial statements
Auditing financial statements

The AICPA distinguishes these levels of financial statement service, and they provide different levels of assurance. (AICPA & CIMA)

Second, many prepared or compiled financial statements do not provide the level of verification a seller may believe they provide.

In a preparation engagement under AR-C Section 70, no assurance is provided on the financial statements; the accountant is not providing an audit opinion or review conclusion.

Third, if a buyer discovers during diligence that the company’s accounting practices were not GAAP-compliant, the issue becomes larger than the accounting adjustment itself.

The buyer may begin to question:

Management sophistication
Internal controls
Lender risk
Reliability of all financial information provided

In M&A, credibility matters.

Once a buyer loses confidence in the numbers, the seller may face:

A lower price
A larger escrow
Seller financing demands
A working capital dispute
A terminated transaction

GAAP Issues Are Not Just Technical Problems

Some business owners view GAAP compliance as something only large companies or public companies need to worry about.

That is a mistake in a sale process.

A lower middle market company does not always need audited GAAP financials to sell successfully. However, the financial statements should be understandable, supportable, and capable of being normalized to a reliable basis.

Buyers and lenders want to know whether the company’s reported earnings are real, repeatable, and transferable.

GAAP-related issues that commonly affect M&A include:

Revenue recognized before shipment or completion
Expenses recorded in the wrong period
Inventory not adjusted for obsolete or slow-moving items
Work-in-process not properly valued
Customer deposits treated as income rather than liabilities
Related-party rent not recorded at market value
Owner compensation not normalized
Capital expenditures expensed incorrectly
Deferred revenue omitted from the balance sheet
Warranty reserves ignored
Bad debt reserves understated
Accrued expenses not recorded

These issues may not prevent a transaction, but they can reduce value if not addressed early.

The CPA’s Role Before Going to Market

The best time to involve an M&A-capable CPA is before the company goes to market, not after a buyer has issued a Letter of Intent.

Before launch, the CPA should help the owner and M&A advisor review:

Three to five years of tax returns
Year-to-date financial statements
Revenue recognition policies
Customer deposit treatment
Inventory accounting
Working capital trends
Addbacks and adjustments
Payroll and contractor classification
Sales and use tax compliance
State tax exposure
Related-party transactions
Debt and equipment financing
Real estate ownership and lease terms
Entity structure and shareholder basis
Likely tax consequences of different deal structures

This preparation allows the seller and M&A advisor to control the narrative.

Instead of reacting defensively to buyer discoveries, the seller can present clear explanations, corrected schedules, and supportable adjustments.

When a Seller May Need a Second CPA Opinion

Loyalty to a long-time CPA is understandable.

However, selling a business is often the largest financial transaction of the owner’s life.

If the existing CPA does not have meaningful M&A experience, the seller may benefit from bringing in a transaction-oriented CPA or tax advisor for a second opinion.

This does not necessarily mean replacing the existing CPA.

In many cases, the best solution is to keep the long-time CPA involved while adding a specialist for:

Transaction tax planning
Quality of Earnings preparation
Accounting cleanup
Deal-structure modeling

A second opinion may be especially important if:

The company recognizes revenue when deposits are received
The company has significant inventory or work-in-process
The business uses cash-basis accounting
Financial statements are not prepared according to GAAP
The company has customer deposits or progress billing
The company has related-party real estate
The entity is a C corporation
There are multiple shareholders or family members
The owner is considering rollover equity
The buyer is proposing an asset sale
The seller is unsure how much tax will be owed at closing
The CPA has not previously supported a lower middle market M&A transaction

The Bottom Line

A strong CPA firm can materially improve the outcome of an M&A transaction.

It can help the seller:

Understand true earnings
Prepare for diligence
Avoid tax surprises
Support buyer confidence
Protect after-tax proceeds

An inexperienced or passive CPA firm can have the opposite effect.

If accounting issues are discovered late, if tax structuring is not considered early, or if years of non-GAAP practices have gone unaddressed, the seller may lose negotiating leverage at the worst possible time.

For business owners considering a sale, the lesson is simple:

Address accounting and tax issues before going to market.

The cleaner the financial story, the stronger the buyer confidence. The stronger the buyer confidence, the better the seller’s opportunity to achieve premium value.

Why a Strong CPA Firm Matters in the M&A Process