For a business owner, the months before a sale can be the period when planning carries the greatest leverage, and also the period when it is easiest to overlook. The operating demands of running a company, preparing it for market, and managing a process with bankers and buyers tend to crowd out the quieter work of tax, estate, and wealth planning. Yet once a letter of intent is signed, or a transaction is well underway, many of the moves that could have reduced tax and strengthened a family’s position become harder to make, or unavailable altogether. The planning window opens early and tends to narrow quickly.
This article outlines the decisions that benefit from lead time, why each carries its own deadline, and how they interact. It is written for founders and owners of closely held businesses who anticipate a liquidity event within the next several years, and for the family office professionals and advisers who work alongside them.
Why the pre-sale window narrows
Three forces compress the planning window as a sale approaches. Understanding them explains why so much of the value in pre-liquidity planning depends on when the conversation begins.
- Valuation. A transaction can potentially influence the value of a company. Before that point, a qualified appraisal may support a lower figure, and transfers of equity to trusts or family members consume less of the gift and estate exemption. After a deal is priced, the same transfer carries a higher valuation.
- Binding commitment. Courts and the IRS have long applied the assignment-of-income doctrine to gifts made after a sale has become, in substance, a foregone conclusion. Charitable contributions of stock made too close to closing may be treated as a gift of the proceeds rather than a gift of the stock, undoing the intended tax result.
- Holding periods and seasoning. Several provisions in the tax code reward time. Qualified small business stock has holding-period requirements, trusts benefit from an administrative history, and a change of domicile is judged by how long and how completely a family has severed ties with the prior state.
Qualified small business stock, after a notable expansion
For owners of qualifying C-corporation stock, Section 1202 of the Internal Revenue Code can be among the more valuable provisions in the planning toolkit. Legislation enacted in July 2025 expanded it considerably.
What changed in 2025
For qualified small business stock (QSBS) acquired after July 4, 2025, a tiered exclusion now applies: gain may be eligible for a 50% exclusion after a three-year holding period, 75% after four years, and 100% after five years. The per-issuer cap on excludable gain rose from $10 million to $15 million, and the company-level gross asset threshold at the time of issuance rose from $50 million to $75 million, with both figures indexed for inflation in later years. Stock acquired on or before July 4, 2025 generally remains under the prior rules, including the five-year holding period and the $10 million cap. The alternative cap of ten times the taxpayer’s basis in the stock continues to apply under both regimes and can be the larger figure for owners with meaningful basis.
The practical effect is that founders and early investors in companies that were, or may become, C corporations have a larger and more flexible exclusion available, provided the stock and the issuer meet the statutory tests at issuance and throughout the holding period. Those tests include the active business requirement, limits on certain service industries, and restrictions on redemptions around the time of issuance.
Trust stacking
Because the exclusion cap applies per taxpayer and per issuer, families sometimes transfer QSBS to one or more non-grantor trusts established for the benefit of children or other family members. A gift of QSBS generally preserves both the qualified status and the original holding period in the hands of the recipient. When properly structured and administered, each qualifying trust may access its own exclusion, which can meaningfully expand the amount of gain sheltered across a family. This planning depends on careful drafting, independent trustees, real economic substance, and attention to the anti-abuse rules that treat certain trusts with substantially the same beneficiaries as a single taxpayer. It tends to work poorly when attempted close to a transaction.
State conformity
A federal exclusion is not a state exclusion. Several states, including California, tax QSBS gain regardless of federal treatment, and others conform in part or with a lag. A family’s state of residence at the time gain is realized can be significant in its own right. For a family contemplating a move to a state with no income tax, such as Florida, Texas, or Tennessee, the timing of that move relative to the sale, and the substance behind it, deserve as much attention as the federal analysis.
Rolling gain into new QSBS
Section 1045 permits a taxpayer who has held QSBS for more than six months to defer gain by reinvesting the proceeds in replacement QSBS within 60 days of the sale. For founders who expect to start or back another company, this provision can complement the Section 1202 exclusion, particularly where the holding period on the original stock falls short of the thresholds. The 60-day window is unforgiving, so candidate investments are usually identified before closing.
Moving equity before value climbs
A sale can potentially influence the value of an investment. Transferring equity beforehand, when a credible appraisal may support a lower figure, can let a family use the federal gift and estate exemption efficiently. That exemption now sits at a permanent $15 million per individual and $30 million per married couple as of 2026, indexed for inflation in later years. Interests in a closely held company may also qualify for valuation discounts for lack of marketability and lack of control, further reducing the exemption consumed by a transfer.
Several vehicles are commonly considered in the pre-sale period:
- Intentionally defective grantor trusts (IDGTs). A sale or gift of equity to an IDGT can move future appreciation outside the taxable estate while the grantor continues to pay the trust’s income tax, which functions as an additional tax-free transfer.
- Grantor retained annuity trusts (GRATs). A GRAT funded with pre-sale equity can pass appreciation above the IRS assumed rate to beneficiaries with little or no use of exemption, though the grantor generally needs to survive the term.
- Spousal lifetime access trusts (SLATs). A SLAT allows one spouse to use exemption while the other retains indirect access to trust assets, which can appeal to families uncertain about how much liquidity they want to relinquish.
- Dynasty trusts. Established in a jurisdiction with favorable perpetuities and trust-tax rules, a dynasty trust can hold appreciated assets for multiple generations outside the transfer-tax system.
Once a deal is priced, the same transfers carry a higher valuation and consume more exemption. In some cases they become impractical, because a buyer may resist late changes to the capitalization table or because transfer restrictions in a purchase agreement take effect.
Charitable timing
Families with philanthropic goals sometimes contribute a portion of pre-sale equity to a donor-advised fund, a private foundation, or a charitable remainder trust. A gift of appreciated stock before a sale can reduce the gain recognized by the family while funding philanthropy at the stock’s fair market value, and a charitable remainder trust can also produce an income stream to the family for a term of years or for life.
The timing of the gift, relative to the point at which a sale becomes binding, can determine whether the strategy holds up. A qualified appraisal is generally required for gifts of closely held stock, and the recipient charity needs to hold the shares as a true owner, free to decline the sale in principle, for the contribution to be respected. Private foundations face additional excess business holdings rules that can limit how long they may hold a substantial interest in an operating company. Each of these considerations argues for making the charitable decision months, not days, before a transaction.
Residency and state tax
For owners in high-tax states, state income tax on a large gain can approach or exceed the federal capital gains rate. A change of domicile before a sale may reduce that exposure, but states apply substance-based tests and often audit moves that precede a significant liquidity event. Factors typically examined include where the family spends its time, where its home, family, and community ties are located, and whether ties to the former state were severed or merely reduced. Some states also assert the right to tax gain sourced to the state regardless of residency, and a few impose exit or deferred-gain rules. Residency planning is therefore both a legal question and a lifestyle question, and it tends to succeed when the move is real and well documented.
Deal structure shapes the after-tax result
The structure of the transaction itself is a planning variable, and it is often negotiated with insufficient attention to the seller’s tax position. Considerations that frequently arise include:
- Stock sale versus asset sale. Buyers often prefer asset purchases for the step-up in basis; sellers of C-corporation stock generally prefer stock sales to preserve capital gain treatment and QSBS eligibility.
- Installment sales. Deferring a portion of the purchase price can spread gain across tax years, which may be useful where rates or residency are expected to change.
- Rollover equity. Retaining an interest in the acquiring entity can defer gain on the rolled portion, though the tax treatment depends heavily on how the rollover is structured.
- Earnouts and escrows. Contingent consideration raises questions of character, timing, and imputed interest that are easier to address before the term sheet is final.
- Purchase price allocation. In an asset sale, allocation among goodwill, equipment, non-compete covenants, and consulting agreements affects whether proceeds are taxed as capital gain or ordinary income.
A working timeline
Every transaction is different, and the sequence below is illustrative rather than prescriptive. It is offered to show how the decisions above tend to arrange themselves against a sale calendar.
| Timeframe | Planning focus | Why timing matters |
|---|---|---|
| 24+ months before | Entity structure review, QSBS eligibility check, initial valuation, family governance conversations | QSBS holding periods run from acquisition; corporate conversions need time to season |
| 12 to 24 months before | Gift and trust funding, non-grantor trust formation, residency planning, insurance review | Transfers at lower valuations consume less exemption; domicile changes need real substance |
| 6 to 12 months before | Charitable vehicle selection, deal structure modeling, installment and rollover analysis | Charitable gifts need to precede a binding commitment; structure decisions shape after-tax proceeds |
| LOI to close | Final valuation, tax elections, working capital and earnout terms, closing checklist | Many transfer strategies are no longer available once a deal is priced |
| Post-close | Proceeds deployment, Section 1045 rollover window, estimated tax, portfolio and legacy plan | Rollover elections carry a 60-day clock; cash sitting idle carries opportunity cost |
Coordination is the strategy
No single one of these decisions stands alone. QSBS planning interacts with trust design, which interacts with estate exemption use, which interacts with state residency, which interacts with charitable intent, which interacts with the structure of the deal itself. Each decision has a window, and many of those windows close as a transaction advances. A trust funded too late consumes more exemption. A charitable gift made after the deal is effectively done may be recharacterized. A domicile change without substance invites audit. A deal structure negotiated without the seller’s tax adviser in the room can leave value on the table that no post-closing planning recovers.
The families who capture this value tend to be those who begin the conversation among their tax, legal, and wealth advisers long before a sale appears on the calendar, and who treat the sale not as a single event but as the midpoint of a multi-year plan that extends into how the proceeds are invested, governed, and eventually passed on. At Certuity, liquidity-event planning sits at the intersection of these disciplines. Our partners work alongside a family’s existing counsel and accountants to model scenarios, sequence decisions, and coordinate execution, because in our experience it is coordination, rather than any single tactic, that tends to produce the result.
Frequently asked questions
When should a business owner begin planning for a sale?
Many advisers suggest beginning 18 to 36 months ahead of an anticipated transaction. Holding-period requirements, trust funding, and residency changes tend to require that much lead time to be effective, and earlier is generally better where a C-corporation conversion or QSBS seasoning is involved.
What changed for QSBS in 2025?
For qualified small business stock acquired after July 4, 2025, a tiered exclusion applies: 50% after three years, 75% after four years, and 100% after five years. The per-issuer cap rose to $15 million and the gross asset threshold rose to $75 million, both indexed for inflation in later years. Stock acquired earlier generally remains under the prior five-year, $10 million rules.
Can QSBS be transferred to trusts before a sale?
Gifted QSBS generally retains its qualified character and holding period in the hands of the recipient. Families sometimes use separate non-grantor trusts so that each may access its own exclusion, subject to careful structuring, independent trustees, and anti-abuse rules that can aggregate certain trusts.
Does a change of residency before a sale reduce state tax?
It may, but states apply substance-based domicile tests and frequently scrutinize moves that precede a large gain. Timing, documentation, and a real severing of ties with the former state all matter, and some states tax gain sourced within their borders regardless of where the seller lives.
Why is a letter of intent a planning deadline?
Once a transaction is priced or becomes binding, gift valuations rise, charitable transfers face assignment-of-income risk, purchase agreements may restrict further transfers, and several strategies become impractical. Much of the planning value depends on acting before that point.
What happens after the sale closes?
Post-close priorities typically include estimated tax payments, any Section 1045 rollover election within 60 days, deployment of proceeds into a diversified portfolio, and revisiting the estate and philanthropic plan in light of the family’s new balance sheet.
This material is provided by Certuity, LLC for educational and informational purposes. It does not constitute investment, legal, accounting, or tax advice, nor a recommendation to buy, sell, or hold any security or to adopt any strategy. Tax provisions referenced, including Sections 1202 and 1045 and the federal estate and gift exemption, reflect federal law in effect as of 2026 and are subject to change; eligibility is fact-specific and state treatment varies. The strategies described may not be appropriate for every investor and depend on individual facts and circumstances. Certuity, LLC is a registered investment adviser; registration does not imply a certain level of skill or training. Past performance is not indicative of future results. Please consult your own tax, legal, and financial professionals regarding your specific situation.