Financial Advisor for Selling a Business: What to Do Before the LOI

For informational purposes only — not tax, legal, or investment advice. Business sale tax planning is fact-specific and requires a qualified CPA and attorney; consult a professional for your situation.

Selling a business is usually the single largest financial event in a person's life. A $3M sale creates a tax bill that can range from $700K to $1.2M+ depending on how the transaction is structured, how long you planned before signing, and whether key decisions — installment sale, charitable structures, entity type — were made before or after the letter of intent.

Most owners engage an advisor after the deal closes, when the tax picture is largely locked in. The difference between planning at LOI versus planning at closing can be hundreds of thousands of dollars. The challenge: the advisor most likely to talk to you after the sale — the one who will AUM-manage your proceeds — has limited incentive to minimize those proceeds through pre-sale tax planning.

Why Pre-Sale Planning Is Where the Real Money Is

The tax consequences of a business sale are largely determined by decisions made before the purchase agreement is signed — not by any post-close investment strategy. The major variables:

• Asset sale vs. stock sale: Buyers typically want asset sales (they get stepped-up basis); sellers prefer stock sales (capital gains treatment instead of ordinary income on some assets). How this negotiation is resolved affects your effective tax rate on portions of the purchase price.
• Installment sale election: Under IRC §453, you can spread gain recognition across multiple tax years by accepting payments over time. This can reduce your effective rate by keeping you out of the top LTCG bracket in any single year.
• Purchase price allocation: In an asset sale, how the purchase price is allocated across goodwill, equipment, inventory, non-competes, and other categories affects whether you pay ordinary income or capital gains rates on each piece.
• Charitable strategies: A charitable remainder trust (CRT) or donor-advised fund (DAF) contribution made before the sale closes can reduce the taxable gain — but timing is critical. Post-close cash contributions to charity are deductible too, but at a lower tax savings than pre-sale stock/equity transfers.
• QSBS eligibility: If you hold qualified small business stock in a C-corporation (§1202), you may qualify for a full or partial exclusion of gain at sale. This has to be evaluated before the transaction, not after.

None of these elections are available post-close. An advisor who enters your life carrying a pitch deck about how they'll manage the proceeds is structurally late.

Capital Gains Tax at a Business Sale: What You're Actually Facing

For most business owners, sale proceeds are taxed as long-term capital gains if you've held the business equity for more than one year. In 2026, the federal rate structure is:

For most business sellers with meaningful gains, you'll be in the 20% bracket. On top of that, the Net Investment Income Tax (NIIT) adds 3.8% on investment income above $200,000 (single) or $250,000 (MFJ).¹ Total federal rate on capital gains: 23.8%. Add state income tax — which varies from 0% (Texas, Florida) to 13.3% (California, on gains) — and the all-in rate can exceed 35% before any pre-sale planning.

On a $5M business sale with $4M in gain, the difference between a 23.8% federal effective rate and a 33% all-in rate is $370,000. That's the size of the prize. It's also larger than most people's cumulative AUM fees over the entire period they'll work with an advisor post-sale.

The Key Pre-Sale Planning Strategies

Installment Sale (IRC §453)

Instead of receiving the full purchase price at close, an installment sale spreads payments — and gain recognition — over multiple years. A business selling for $3M with a $2.4M gain might structure payments over five years, keeping each year's gain recognition well below the 20% threshold in the installment years. The seller earns interest on the deferred amounts (the IRS requires charging at least the applicable federal rate, or AFR).²

Risks: buyer default (you have a note, not cash), inability to invest proceeds at full market rates during the term, and the fact that ordinary-income items (inventory, depreciation recapture) recognized in an installment sale are still taxed as ordinary income in the year of sale. A good advisor models the post-tax return on an installment note versus investing the lump-sum post-tax proceeds — those numbers are often closer than sellers expect.

Qualified Small Business Stock (§1202)

If you're selling stock in a qualifying C-corporation, §1202 can exclude a portion of the gain from federal tax entirely. For stock issued before July 4, 2025: up to $10M in gain excluded (100%) if the stock was held more than five years and the company's gross assets were under $50M at issuance.³

For stock issued after July 4, 2025 (under OBBBA changes): the per-issuer gain exclusion cap increases to $15M, the gross asset threshold rises to $75M, and a new tiered structure applies — 75% exclusion at three years, increasing at four years, 100% at five years.³

QSBS does not apply to S-corporations, partnerships, or LLCs. Most small businesses are not structured as C-corps, which means §1202 doesn't apply — but it's worth confirming with a tax advisor, especially if a reorganization years before a sale could have created eligibility. Note that unexcluded QSBS gain held fewer than five years is taxed at 28%, not the standard LTCG rate.

Charitable Remainder Trust (CRT)

A charitable remainder trust lets you transfer appreciated business equity into a trust before the sale. The CRT sells the equity tax-free (it's a tax-exempt entity), then pays you an income stream — typically 5–10% of the initial trust value annually — for a term of years or your lifetime. At the end, the remaining assets go to charity. In exchange for the charitable remainder, you receive an upfront income tax deduction equal to the actuarial value of that charitable remainder interest.

For a business owner who doesn't need all the liquidity immediately, a CRT can convert a large taxable gain into a multi-year income stream while funding charitable giving they would have done anyway. The income stream itself is taxed (as a blend of ordinary income, capital gains, and return of basis), but the overall tax profile is often materially better than receiving and investing a lump-sum post-tax payout.

Timing requirement: the CRT contribution must be completed before the purchase agreement creates a binding obligation to sell. An advisor needs to be involved months before closing — not weeks.

Donor-Advised Fund (DAF)

If you plan to give to charity over time, contributing equity to a DAF before the sale closes lets you take the full fair-market-value deduction in the year of the contribution, avoid capital gains tax on the donated shares, and then distribute from the DAF to specific charities over years. For a business owner in the 37% ordinary income bracket who planned to give $200,000 to charity anyway, contributing that amount pre-sale in appreciated equity costs nothing in capital gains and generates a $74,000 tax savings that a post-sale cash gift would not have generated.

Opportunity Zone Investment

Under the Qualified Opportunity Zone (QOZ) program, you can invest capital gains into a Qualified Opportunity Fund within 180 days of the sale and defer — and ultimately eliminate — federal tax on those invested gains. A 10-year hold eliminates federal capital gains tax on all appreciation earned inside the fund.⁴ This strategy requires due diligence on the QOF itself (real estate risk, illiquidity) and is best suited for gain amounts you can afford to have locked up for a decade.

Post-Sale Planning: The Window After Close

Once the sale closes and proceeds hit your account, pre-sale elections are gone. What remains:

• Asset allocation and portfolio construction: A sudden $3M influx is a common case for getting a second opinion before making any investment decisions. Robo-advisors handle the ongoing management; an hourly or flat-fee advisor helps you set the initial allocation and guardrails.
• Roth conversion window: If you've had a down income year post-sale (or if you structure distributions carefully), the window between the sale and when required minimum distributions begin may be the best time you'll ever have to convert traditional IRA or 401(k) assets to Roth at favorable rates. An AUM advisor managing a large post-sale portfolio has less incentive to shrink it via Roth conversions.
• Estate planning update: A significant liquidity event usually means the estate plan is stale. The 2026 federal exemption is $15M per person ($30M MFJ) under the OBBBA, but state estate taxes vary widely — 12 states and DC still impose estate tax, with exemptions as low as $1M in Massachusetts and Oregon.⁵
• Insurance audit: Life insurance, disability coverage (which ends at sale), and umbrella policies need to be re-evaluated in light of the new net worth picture.

The AUM Conflict at Business Sale — In Specific Terms

The financial advisor most likely to approach you at or after a business sale is an AUM advisor. Their business model rewards them for taking custody of the maximum amount of the proceeds and managing them as long as possible. At 1% AUM on $4M, that's $40,000 per year — indefinitely.

What that advisor is paid to help with:

• Investment management of post-close cash
• Ongoing financial planning as a retainer client

What that advisor has limited incentive to help with:

• Pre-sale charitable giving that reduces the amount you receive
• An installment sale that delays and reduces the amount they manage
• QSBS analysis that reduces taxable gain but doesn't change how assets are managed
• QOZ investment that locks capital away from their AUM for 10 years

A flat-fee advisor — whether engaged on retainer or for a one-time project — earns the same regardless of which strategies reduce your post-close investable assets. Their advice on each of these questions is structurally uncontaminated by how you end up deploying the proceeds.

What a Flat-Fee Business Sale Engagement Looks Like

Typical scope for a pre-sale and post-sale planning engagement:

Cost for this scope with a flat-fee advisor: typically $5,000–$15,000 depending on complexity, engagement duration, and advisor. Compare that to 1% AUM on $4M = $40,000 per year, every year.

If you're looking to save $40K this year and $40K next year and $40K the year after — by engaging an advisor who's paid for their time and expertise, not a percentage of what you have — the math is straightforward. Use our AUM vs. flat-fee calculator to model it for your specific asset level.

When to Engage a Flat-Fee Advisor

The answer to "when" is almost always "earlier than you think." By the time a purchase agreement is in hand, some of the best options have closed. The ideal engagement timeline:

• 12–24 months before expected sale: Entity structure review, QSBS eligibility, charitable strategy planning if intent exists
• 3–6 months before expected LOI: Installment sale modeling, CRT trust setup if pursuing that route
• At LOI: Final review of transaction structure and allocation
• Within 60 days of close: QOZ opportunity window, post-close asset allocation
• Year of sale: Roth conversion analysis, estate plan review

If you're at or past LOI, some options are off the table — but installment sale structure, QOZ investment, and post-close planning are still available.

Also see: Estate planning after a liquidity event · HNW financial planning · One-time financial plan · How to find a flat-fee advisor