An acquisition term sheet is not just a negotiating document. It is also a tax-planning alarm clock.
It is not a universal tax-law cutoff. Nothing in the Code says planning ends when an LOI arrives. But once a sale becomes practically fixed—definitive agreement signed, approvals lined up, remaining contingencies thin—strategies involving gifts, domicile changes, option exercises, or deal structure can become unavailable, ineffective, risky, or commercially impractical. Before you sign, answer two questions: What exactly am I selling, and which planning opportunities become harder if this deal advances?
Identify the issues now. Implementing a strategy is a separate decision.
I. Understand the deal before you plan around it
Tax results depend on what is being sold and what you will actually receive. Pin down, at least in outline:
- stock sale, asset sale, or merger;
- cash, buyer stock, or mixed consideration;
- rollover equity;
- earnouts and other deferred payments;
- escrows and holdbacks;
- treatment of options, RSUs, and other awards;
- bonuses, retention, and acceleration;
- expected signing and closing dates.
A headline enterprise value is not your after-tax proceeds. Structure, the character of each payment stream, and timing matter more than the cover number.
II. Identify planning windows that may be closing
These are the issues where transaction timing can decide whether planning remains viable. The point of raising them at the term-sheet stage is not to execute every technique—it is to know which ones still have room.
QSBS
Before negotiating around Section 1202, determine whether you actually have QSBS—and which shares qualify. Analyze stock block by block: original issuance from a domestic C corporation; acquisition date and the applicable pre– or post–July 4, 2025 regime (including any 3/4/5-year tiers); the applicable per-issuer dollar limit ($10 million or $15 million, subject to prior use and coordination) or the 10×-basis alternative; the gross-assets ceiling at issuance; active-business compliance during the relevant holding period; and redemptions or other disqualifying facts. Not every share you hold necessarily has the same status.
A term sheet does not, by itself, change QSBS status. It forces the question into the open before you design the exit around an exclusion you may not have. For sequencing with domicile and state tax, see the Washington founder exit map.
§1045
If the stock is otherwise QSBS, you have held it for more than six months, and the sale would occur before you reach the desired Section 1202 result, evaluate whether a Section 1045 rollover is worth modeling. Section 1045 is deferral, not exclusion: replacement QSBS generally must be purchased within the 60-day period beginning on the sale date, and deferred gain reduces basis in the replacement stock. Section 1045 has its own replacement-stock, basis, holding-period, and active-business rules. If a rollover may matter, plan it before the sale rather than trying to reconstruct it after proceeds have been redeployed.
Charitable gifts of appreciated stock
Founders sometimes consider contributing appreciated shares to a public charity, a donor-advised fund, or another charitable vehicle before a sale. Do not assume that “donate before closing” avoids the gain. If your right to the sale proceeds has become sufficiently fixed before the gift, assignment-of-income principles may treat you as realizing the gain despite the transfer.
That is a facts-and-circumstances inquiry. A generally “nonbinding” LOI is not a safe harbor. A signed definitive agreement is a major warning sign, but assignment-of-income analysis remains fact-specific. Remaining contingencies, termination rights, required corporate action, and practical certainty of closing can all matter. Charitable deduction limits, appraisal, and the charity’s willingness to hold private-company stock are separate questions from gifts to family.
Gifts to family and trusts
If gifting is genuinely part of your planning, analyze it early. Do not invent aggressive transfers shortly before closing and assume the gain has shifted. Spot assignment of income, carryover basis, who will be taxed on a later sale, gift tax and exemption use, valuation, control and economics, and transfer restrictions in governing documents and the term sheet.
Where the stock is QSBS, Section 1202(h) can preserve relevant QSBS attributes—including holding-period tacking—in qualifying transfers by gift. That does not eliminate assignment-of-income analysis, and it does not guarantee that every trust or family structure multiplies the exclusion. Multiple-trust or “stacking” strategies raise separate grantor-trust, aggregation, substance, and anti-abuse issues; use the dedicated QSBS gifts material rather than building that architecture into a term-sheet sprint.
State residence and domicile
If you are considering changing domicile before a major liquidity event, evaluate that before the sale is practically fixed—not with last-minute paperwork. Changing a driver’s license, buying a house, or filing a declaration does not, by itself, change domicile.
A Washington founder considering relocation should model the capital-gains tax, the separate individual income tax effective January 1, 2028 where applicable, QSBS treatment, and domicile, residency, and sourcing—then use the Leaving Washington guide and domicile-change checklist. This article only flags that the window to evaluate a real move is early.
III. Identify taxes created by the deal itself
Issue-spot these before term-sheet economics become fixed.
Options and equity compensation
Identify ISO versus NSO status, vested versus unvested shares, exercise price and current FMV, ISO AMT exposure, NSO ordinary-income consequences, qualifying versus disqualifying ISO dispositions, and how the sheet treats cash-out, assumption, substitution, and acceleration. See the ISO vs. NSO guide.
Do not reflexively exercise options merely because a sale is approaching. Exercise can create tax—AMT, ordinary income, withholding—without a meaningful after-tax benefit once deal economics are fixed. An option grant is not a stock acquisition for QSBS purposes.
§83(b)
A pending acquisition does not create a new opportunity to make an §83(b) election on old vested founder stock. The election matters only where substantially nonvested property is actually transferred and the statutory deadline remains open. See the 83(b) guide.
Stock sale versus asset sale
In a stock sale, shareholders sell shares—often with capital-gain treatment and potential QSBS treatment, and generally without a corporate-level tax on an asset sale, subject to the facts. In an asset sale by a C corporation, the company can recognize gain on the assets and shareholders can face another tax when proceeds are distributed. Buyers and sellers often prefer different structures. Once structure is baked into a signed term sheet, changing it later is often difficult. That is why tax review belongs before the term sheet fixes the transaction structure.
Allocation, rollover, and deferred consideration
In an asset deal—and in some hybrids—amounts allocated to assets, goodwill, covenants, employment, consulting, or other components can have different tax character. Calling consideration “purchase price” does not make every dollar capital gain.
Rollover equity is not automatically tax-free. Treatment can depend on Section 351, a reorganization under Section 368, partnership contribution rules, a taxable exchange, or another arrangement. Verify the assumed treatment before agreeing to the economics.
Do not negotiate deferred consideration, seller financing, or earnouts assuming tax deferral under Section 453 without modeling it. Contingent payments, interest, exceptions, and character all matter.
§280G / §4999
If you or other disqualified individuals may receive accelerated vesting, transaction bonuses, severance, retention pay, or other change-in-control compensation, run a Section 280G analysis early. The three-times-base-amount test is relevant to parachute-payment status. The Section 4999 20% tax and the Section 280G deduction disallowance apply to excess parachute payments—generally each parachute payment minus its allocated portion of the base amount—not merely the slice above three times the base. For eligible private corporations, investigate the shareholder-approval exception under Section 280G(b)(5). Planning often requires action before closing, and sometimes before arrangements become fixed.
Employment, retention, and noncompete payments
Amounts paid for employment, retention, consulting, bonuses, or noncompetition covenants may be ordinary compensation or otherwise taxed differently from stock-sale consideration. Not everything paid in connection with an acquisition is stock-sale consideration or capital gain.
IV. Why “nonbinding” does not mean unlimited planning time
Most acquisition term sheets are largely nonbinding while carving out specific binding provisions—often exclusivity or no-shop, confidentiality, expense allocation, and governing law. Draft so the binding and nonbinding pieces are unmistakable. Exclusivity can materially change leverage once you sign.
“Nonbinding” is a contract characterization, not a tax-planning safe harbor. Assignment-of-income and related questions can depend on the actual transaction posture and how fixed the sale has become—not on whether the document has “NONBINDING” printed across the top. Sellers usually benefit from putting structure, consideration mix, option treatment, and post-closing obligations in the term sheet rather than deferring them until leverage is gone.
Before you sign — checklist
- What am I selling—stock, assets, or a merger—and what will I actually receive?
- Is my stock QSBS, and which blocks / regime / holding period apply?
- Does §1045 matter if the desired §1202 result is not yet available?
- Am I considering charitable or family gifts—and is assignment of income already a problem?
- Is a genuine domicile change under consideration, with real facts?
- Do options or other awards require a deliberate exercise or settlement decision?
- Is rollover equity involved, and has its tax treatment been verified?
- Is consideration deferred or contingent—and has installment / character risk been modeled?
- Could §280G / §4999 apply to acceleration, bonuses, or retention—and is the excess analysis done?
- Have federal and state tax consequences been modeled before locking structure and economics?
Bottom line
The best time to review the tax consequences of an acquisition is before the term sheet locks in structure and economics—not after the definitive agreement is nearly finished.
Contributor note: portions of the binding/nonbinding discussion draw on an earlier draft by Teresa Daggett.
If you have an acquisition term sheet in hand, this is the time to review the tax consequences—not after the definitive agreement is drafted. I can review the term sheet for QSBS, transaction structure, pre-sale gifts, domicile, equity compensation, and Section 280G issues.
