Selling Your Business: How Your CPA, Broker, and Attorney Work Together

Selling a business is not a single transaction -- it is a sequence of interdependent decisions spanning valuation, deal structure, tax optimization, legal documentation, and closing logistics. No single professional handles all of it. The outcome depends on how well your CPA, business broker, and attorney coordinate, and on whether each one is brought in at the right time. Missteps in coordination -- a broker who prices the business without understanding the tax structure, or an attorney who drafts a purchase agreement before the CPA models the allocation -- can cost the seller hundreds of thousands of dollars in avoidable taxes or leave value on the table.

This guide explains what each professional does, where their responsibilities overlap, and how to sequence their involvement for the best outcome.

The Business Broker: Valuation, Marketing, and Deal Sourcing

The business broker's job is to find qualified buyers, negotiate the headline price, and manage the process from listing through closing. A good broker understands market multiples, prepares marketing materials (typically a confidential information memorandum), screens buyers for financial capability, and manages the letter-of-intent stage.

What the broker does not do. Brokers are not tax advisors. A broker may present the deal as a $5 million sale, but the seller's net after-tax proceeds depend entirely on how the deal is structured -- asset sale vs. stock sale, purchase price allocation, installment terms, and entity type. Two deals at the same headline price can produce after-tax results that differ by 20% or more.

Where the broker and CPA must coordinate. The broker needs the CPA's input before setting the asking price. A CPA who understands the tax basis of the company's assets, the owner's personal tax situation, and the availability of exclusions like IRC Section 1202 (Qualified Small Business Stock) can identify deal structures that increase the seller's after-tax proceeds without increasing the buyer's cost. For example, if the seller qualifies for the QSBS exclusion, a stock sale may be worth far more after tax than an asset sale at a higher headline price.

Broker compensation. Most business brokers work on commission, typically 8-12% of the transaction price for businesses under $5 million, with rates declining for larger deals (often following a modified Lehman formula). The commission is paid at closing out of the sale proceeds. Understand how the commission interacts with your tax calculation -- the commission reduces your amount realized, which reduces your taxable gain.

The Attorney: Deal Structure, Due Diligence Defense, and Closing

The attorney drafts and negotiates the purchase agreement, manages the legal due diligence process, structures representations and warranties, handles regulatory approvals, and orchestrates the closing. In a business sale, the attorney's work product is the contract that governs everything.

Asset sale vs. stock sale -- the legal dimension. The decision to sell assets or stock has both tax and legal consequences. In an asset sale, the buyer acquires specific assets and assumes specific liabilities as enumerated in the purchase agreement. The seller retains the legal entity and any liabilities not expressly assumed. In a stock sale, the buyer acquires the entity itself, including all liabilities -- known and unknown. The attorney structures representations, warranties, indemnification provisions, and escrow arrangements to allocate this risk.

Representations and warranties. The purchase agreement will contain extensive representations by the seller about the business -- accuracy of financial statements, compliance with tax laws, absence of undisclosed liabilities, validity of contracts, intellectual property ownership, and more. The CPA's role in supporting these representations is critical: the financial and tax representations must be accurate, and the CPA is often the person who knows whether they are.

Indemnification and escrow. The attorney negotiates the seller's post-closing indemnification obligations -- how long after closing the buyer can make claims, what dollar thresholds apply, and how much of the purchase price is held in escrow pending resolution of potential claims. Tax-related indemnification provisions deserve particular attention: if the IRS later challenges the purchase price allocation or the seller's pre-closing tax positions, the indemnification clause determines who bears the cost.

The CPA: Tax Optimization, Allocation Strategy, and Structuring

The CPA's contribution to a business sale goes far beyond preparing the final tax return. A CPA who understands business sale taxation shapes the deal structure from the outset, models different scenarios, and identifies tax-saving opportunities that the broker and attorney may not see.

Purchase Price Allocation Under IRC Section 1060

When the deal is structured as an asset sale, IRC Section 1060 requires buyer and seller to allocate the total purchase price among the acquired assets using the residual method prescribed in Treasury Regulation 1.338-6. Both parties report the allocation on IRS Form 8594 and must use consistent figures.

The allocation determines the character of the seller's gain on each asset:

• Inventory and accounts receivable (Classes II-III): Gain is ordinary income.
• Equipment, vehicles, furniture (Class IV): Gain is ordinary income to the extent of prior depreciation (recapture under IRC Section 1245), with any excess treated as Section 1231 gain (potentially capital gain).
  Technical detail

  IRC Section 1245 requires sellers to recapture as ordinary income any gain attributable to prior depreciation deductions on personal property.
• Intangible assets, covenants not to compete (Classes V-VI): Ordinary income for covenants not to compete; capital gain for other Section 197 intangibles held more than one year.
• Goodwill (Class VII): Long-term capital gain if the business has been held more than one year.

The seller's objective is to maximize allocation to goodwill (taxed at the preferential long-term capital gains rate of 20%, plus the 3.8% net investment income tax) and minimize allocation to assets that trigger ordinary income recapture (taxed at rates up to 37%). A $300,000 shift from equipment (ordinary recapture) to goodwill (capital gain) can save the seller $50,000 or more in federal taxes.

The CPA models these scenarios and advises on defensible allocation positions. The allocation must reflect fair market value -- the IRS can and does challenge allocations that appear to be motivated purely by tax benefits without economic substance.

Installment Sale Treatment Under IRC Section 453

If the buyer pays over time (seller financing, earnouts, or deferred payments), the seller may be eligible for installment sale treatment under IRC Section 453. Rather than recognizing all gain in the year of sale, the seller recognizes gain proportionally as payments are received. This can spread the tax liability over several years, potentially keeping the seller in lower tax brackets and deferring the tax cost.

Limitations. Installment sale treatment is not available for sales of inventory, publicly traded securities, or depreciation recapture (which must be recognized in the year of sale regardless of payment timing). The CPA must calculate the "gross profit ratio" and advise on the interaction between installment reporting and the alternative minimum tax.

Imputed interest. If the seller-financed note does not carry adequate stated interest, IRC Section 1274 imputes interest at the applicable federal rate (AFR). This recharacterizes part of each payment from principal (capital gain) to interest (ordinary income). The CPA ensures the note is structured to avoid unfavorable imputed interest treatment.

QSBS Exclusion Under IRC Section 1202

The Qualified Small Business Stock exclusion is one of the most valuable tax benefits available to founders and early shareholders selling a C-Corporation. Under IRC Section 1202, a shareholder who has held qualified small business stock for more than five years can exclude from federal income tax up to the greater of $10 million or 10 times the shareholder's adjusted basis in the stock. For stock acquired after September 27, 2010, the exclusion is 100% -- meaning the entire gain can be tax-free at the federal level.

Qualification requirements. QSBS eligibility is strict:

• The issuing corporation must be a domestic C-Corporation at the time the stock is issued and during substantially all of the shareholder's holding period.
• The corporation's aggregate gross assets must not exceed $50 million at the time the stock is issued and immediately after.
• The stock must be acquired at original issuance (not purchased on a secondary market) in exchange for money, property, or services.
• The corporation must be engaged in a qualified trade or business -- specifically excluded are professional services (health, law, engineering, accounting, consulting, financial services), banking, insurance, farming, mining, and hospitality (hotels and restaurants).
  Technical detail

  IRC Section 1202(e)(3) lists excluded trades or businesses. The definition of "qualified trade or business" excludes any trade or business involving the performance of services in the fields of health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, or any trade or business where the principal asset is the reputation or skill of one or more employees.

Why the CPA must be involved early. The QSBS analysis must happen before the deal structure is chosen. If the seller's stock qualifies under Section 1202, a stock sale (not an asset sale) is essential to claim the exclusion. A broker who structures the deal as an asset sale -- the default preference for most buyers -- would destroy the seller's QSBS benefit entirely. The CPA's job is to identify this issue, quantify the tax savings, and ensure the attorney structures the deal to preserve the exclusion.

Section 338(h)(10) interaction. If buyer and seller jointly elect under IRC Section 338(h)(10) to treat a stock purchase as a deemed asset sale for tax purposes, the QSBS exclusion is forfeited. The deemed asset sale treatment overrides the stock sale characterization that Section 1202 requires. The CPA must model the trade-off: the buyer's stepped-up basis benefit from 338(h)(10) vs. the seller's QSBS exclusion. In many cases, the QSBS benefit dwarfs the buyer's depreciation advantage, and the parties can negotiate a price adjustment to compensate the buyer for foregoing the election.

Coordination Timeline: When Each Professional Enters

Getting the sequencing right avoids rework, prevents tax-destroying structural mistakes, and ensures each professional's work product builds on the others.

12-18 months before sale (CPA leads). The CPA performs a pre-sale tax analysis: reviews entity structure, identifies QSBS eligibility, models asset sale vs. stock sale scenarios, calculates estimated tax liability under different allocation assumptions, and flags any structural changes needed (e.g., converting from S-Corp to C-Corp to establish QSBS eligibility -- note that this requires a new five-year holding period). The CPA also reviews the last three to five years of tax returns to identify and resolve any issues that would surface during buyer due diligence.

6-12 months before sale (broker enters). The broker values the business, prepares marketing materials, and begins the buyer search. The broker should already have the CPA's guidance on deal structure preferences -- whether the seller needs a stock sale for QSBS, whether installment treatment is beneficial, and what allocation positions are defensible. This prevents the broker from negotiating deal terms that the CPA later has to unwind.

Letter of intent stage (attorney enters). The attorney reviews and negotiates the letter of intent, structures the purchase agreement, and begins legal due diligence. The CPA and attorney work together on the allocation schedule, tax representations, and indemnification provisions. The attorney drafts the allocation clause; the CPA verifies the numbers.

Due diligence period (all three coordinate). The buyer's advisors will request tax returns, financial statements, payroll records, sales tax filings, and other documents. The CPA prepares and reviews these materials. The attorney manages the due diligence data room. The broker manages the relationship and timeline.

Closing and post-closing (CPA and attorney). The attorney handles the closing documents, escrow arrangements, and transfer mechanics. The CPA handles the final tax return for the selling entity, the seller's personal return reflecting the sale, Form 8594 (if asset sale), and any installment sale calculations. The CPA also advises on estimated tax payments to avoid underpayment penalties on the gain.

Broker prices the deal without CPA input. The broker sets an asking price based on market multiples but does not account for the tax structure. The seller accepts a deal that looks attractive at the headline number but nets significantly less after tax than an alternative structure would have produced.

Attorney drafts allocation before CPA models scenarios. The purchase agreement includes a fixed allocation that the seller's CPA has not reviewed. Post-closing, the CPA discovers that the allocation shifts too much value to ordinary-income assets, costing the seller tens of thousands in unnecessary taxes. Renegotiating the allocation after closing is difficult or impossible.

QSBS eligibility is not checked until after the LOI. The seller's stock qualifies under Section 1202, but the letter of intent specifies an asset sale. By the time the CPA identifies the issue, the buyer has structured its financing and due diligence around an asset purchase. Restructuring the deal at this stage may be possible but creates friction, delays, and potential price renegotiation.

No one coordinates estimated tax payments. The seller closes a $4 million sale in December but does not make an estimated tax payment until April. The IRS and state taxing authorities assess underpayment penalties. The CPA should calculate and advise on estimated payments immediately after closing.