The CPA's Role in a Business Sale: A Practitioner's Playbook

Why this matters to your practice

A well-run business sale is the largest financial event of your client's life and one of the most intensive CPA engagements you'll ever run. It's also one of the highest-value — typical engagement economics on a $3M–$8M deal involve 80–150 hours across 6–12 months at full rate, plus residual tax-return work and follow-on planning for the proceeds.

More importantly, it's sticky: clients remember who carried them through the sale for the rest of their financial life. Nailing this engagement locks in referrals, wealth-transition work, and the next-generation relationship.

Stage 1: Pre-Engagement (ongoing)

Time horizon: 3–5 years out.

The highest-leverage work happens before the client has decided to sell. Keep an active list of clients whose facts make them sale candidates in the next 5 years — typically founders aged 55+, owners with >$50K/month SDE, and any client whose personal goals have shifted (kid going to college, health event, relocation plans).

Deliverables at this stage

• Entity-structure review. Is the current structure optimal for exit? C-corp vs. S-corp vs. LLC has massive impact on §1202 eligibility, §338(h)(10) availability, and installment-sale treatment.
• Books-quality scorecard. Unrecorded inventory, personal expenses run through the business, unclear intercompany flows — all of these reduce offer value. Score them annually.
• Shadow SDE / shadow EBITDA tracker. Keep a running "sale-ready" adjusted earnings number for each candidate. This normalizes owner compensation, personal expenses, one-time items.

Stage 2: Sale Decision & Team Assembly (months -6 to -3)

Time horizon: Client has decided to explore or sell. 3–6 months before listing.

This is the engagement-definition stage. Set scope and fees explicitly. Typical CPA deliverables:

1. Normalized 3-year P&L package. Month-by-month detail, with a clean add-back schedule. This is what the broker will build the CIM from, what buyers will rely on, and what QoE will test. Budget 15-25 hours.
2. Balance sheet review. Accounts receivable aging, inventory validity, capitalized vs. expensed policy, related-party items. Budget 8-12 hours.
3. Tax strategy memo. Written analysis of asset vs. stock, §338(h)(10) feasibility, §1202 analysis (if applicable), installment-sale modeling, state residency considerations. Budget 10-15 hours.
4. Introduce the broker. If the client doesn't have one, make the referral. A client going to market with weak broker selection is a client whose deal goes sideways.

Stage 3: Listing & Marketing (months -3 to 0)

Broker runs the show here. CPA's role is supporting documentation and buyer-question quick-response.

What you'll produce

• Tax-return packages (3 years, likely needing redaction for personal items on early pages)
• Monthly financials for the trailing 12–24 months
• Response to standard buyer questions: revenue concentration, customer churn, COGS composition, fixed-asset register, working-capital trends
• A single-page "adjusted earnings walk" from GAAP net income to SDE/EBITDA — clean, defensible, auditable

Budget: 8-12 hours of responsive time over 8-12 weeks. Most is email-driven.

Stage 4: LOI Negotiation (week 1 of serious bidder)

Short and high-stakes. Typically 5-10 days of intense work when a serious LOI arrives.

Your deliverables

• Gain analysis under each offered structure. Asset sale at $X vs. stock sale at $Y net to the seller after taxes, after working-capital adjustment, after earn-out risk-adjustment.
• Working-capital target recommendation. Most LOIs include a "normalized net working capital" delivery target. Getting this right is worth $100K-$500K depending on deal size.
• Earn-out structure review. If the deal has an earn-out, the accounting methodology and audit rights matter enormously. Don't let the attorney draft this without your input.
• Seller-note review. Interest rate, amortization, subordination, default remedies. Comment on tax treatment of interest income.

Stage 5: Due Diligence (months 1-3 of signed LOI)

This is where the deal dies or closes. Buyer's QoE (Quality of Earnings) team will scrutinize the financials. Your job is to anticipate their questions and package answers.

Common QoE findings that kill (or repriced) deals

• Revenue timing. Pre-billing, unearned revenue mis-classified, deposits treated as revenue.
• COGS manipulation. Inventory adjustments that smooth earnings, bonuses capitalized, owner compensation understated.
• One-time income. PPP forgiveness, insurance recoveries, sale of assets — all need to be normalized out of run-rate.
• Add-back aggression. The CIM showed $1.2M SDE. QoE finds it's actually $950K. Buyer repricing: -20%.

Your pre-LOI normalized package should have addressed all of these. If it didn't, this is where it catches up to you.

Stage 6: Purchase Agreement & Close (months 2-4)

Attorney drafts. CPA reviews anything with numbers in it.

Your review items

• Purchase price allocation schedule (Form 8594)
• Working capital calculation mechanics and post-close true-up
• Escrow amount, duration, release conditions
• Reps & warranties — tax representation specifically (subject to a dollar-for-dollar indemnity cap; do the math)
• Indemnification baskets, caps, and survival periods
• Seller note, if applicable — principal, rate, term, security

Stage 7: Post-Close (months 0-24 after close)

Often undersold as an engagement, but meaningful billable work continues:

• Final-year return with the largest gain recognition of the client's life
• Working-capital true-up (typically 60-90 days post-close)
• Escrow release tax reporting (often 12-24 months post-close)
• Earn-out tax treatment (each year of the earn-out period)
• Proceeds planning: municipal bonds, §1042 QRP, opportunity zones, charitable strategies

Engagement economics (typical, for a $3–8M deal)

At a $250/hr blended rate, that's $21K-$39K of engagement fees on a single transaction — more on larger or more complex deals.

The mistakes that actually cost clients

1. Starting tax planning at LOI. By then, most structural choices are locked. Start 3+ years out.
2. Aggressive add-backs that don't survive QoE. Better to understate SDE by 5% than defend the indefensible in diligence.
3. Ignoring NJ Bulk Sale Act. Buyer gets a nasty surprise, deal pauses, escrow held back. See the NJ Tax Guide.
4. Weak working-capital target. Client leaves $200K on the table at close. Preventable with 2 hours of analysis.
5. Letting the client sign the LOI without a gain analysis. Asset vs. stock can mean a 6-figure swing in after-tax proceeds.