Tax Strategies for Selling a Business: The Founder’s Master Playbook

You’ve spent years building something. Now, with an exit on the horizon, the question shifts from how to grow the company to how much of the proceeds you actually get to keep.

The difference between a founder who plans ahead and one who doesn’t can be measured in millions. On a $50 million personal exit, the right combination of tax strategies can reduce a federal and state tax bill dramatically. The wrong approach? You hand over a significant portion of your exit event without any of the planning levers having been pulled.

This guide covers the most impactful tax strategies for selling a business, specifically designed for venture-backed founders anticipating an exit of $20 million or more.

The Master Strategy List at a Glance

Strategy 1: Qualified Small Business Stock (QSBS)

For most venture-backed founders, QSBS is the single most powerful tax tool available. Under Section 1202 of the Internal Revenue Code, founders who hold qualifying stock in a domestic C corporation can exclude a substantial portion of their capital gains from federal income tax entirely.

What Changed Under the One Big Beautiful Bill Act (OBBBA, July 4, 2025)

The OBBBA significantly expanded QSBS benefits for stock issued after July 4, 2025:

Source: H.R.1 (One Big Beautiful Bill Act, Public Law 119-21; IRS One, Big, Beautiful Bill Provisions)

Important nuance: The 28% rate on non-excluded Section 1202 gain has applied under IRC §1(h)(4) since the original enactment of the QSBS rules and was not changed by the OBBBA. For stock issued on or before July 4, 2025, the original $10M cap and $50M gross asset threshold still apply. The new tiered holding period system only benefits newly issued stock. (Note the statutory precision: pre-OBBBA stock requires a holding period of more than five years; the post-OBBBA tiers use at least three, four, or five years.)

A critical caveat: state conformity. The §1202 exclusion is a federal benefit, and not every state honors it. California, Pennsylvania, Alabama, Mississippi, Oregon (effective for tax years beginning on or after January 1, 2026, under SB 1507), and Washington D.C. (under temporary legislation retroactive to January 1, 2025, whose permanent status remains subject to Congressional review) do not conform: a California resident pays up to 13.3% state tax on QSBS gain even when the federal exclusion is 100%. Hawaii conforms only partially. Maine has decoupled specifically from the OBBBA expansion: gain on QSBS first acquired after July 3, 2025 is added back for Maine purposes. Massachusetts conforms to §1202 under its static IRC conformity date (currently the Code as in effect on January 1, 2024, for tax years beginning on or after that date), meaning the 100% exclusion applies for state purposes, but the OBBBA’s expanded benefits ($15M cap, $75M threshold, tiered holding periods) do not flow through unless the conformity date is updated. New Jersey, historically non-conforming, adopted the exclusion effective for tax years beginning on or after January 1, 2026. Even in other conforming states, confirm whether state conformity captures the post-OBBBA version of §1202 before relying on any QSBS projection. (See our QSBS State Tax Treatment guide.)

Strategy 1B: QSBS Stacking

The Section 1202 exclusion cap ($10M for pre-OBBBA stock, $15M for stock issued after July 4, 2025) applies per taxpayer, per issuer. That means a founder with a $60 million exit and a single $15M exclusion is leaving a significant amount of gain on the table. QSBS stacking is the strategy for changing that.

How It Works

By transferring QSBS shares to one or more irrevocable non-grantor trusts (each established for a separate beneficiary, such as a child or descendant), a founder can create additional taxpayers, each entitled to their own per-issuer exclusion. The gifted shares retain their QSBS status and the original holding period under IRC §1202(h)(2)(A), so the trust can claim the exclusion on a future sale just as the founder could.

A founder with three children who establishes a separate non-grantor trust for each, and transfers qualifying QSBS into each trust, could potentially shelter $10M (pre-OBBBA stock) or $15M (post-OBBBA stock) per trust in addition to their own personal exclusion. On pre-OBBBA stock, that’s $40M in total federal exclusions across four taxpayers. On post-OBBBA stock issued after July 4, 2025, that’s $60M.

Note that gifting to a spouse does not create a second cap. Spouses filing jointly are generally treated as sharing one combined per-issuer exclusion.

Critical Requirements and Risks

Stacking is powerful, but it is not a plug-and-play strategy. Several requirements must be met precisely:

Trusts must be genuinely independent taxpayers. Under Treas. Reg. §1.643(f)-1 (finalized in 2019), the IRS can aggregate multiple trusts as a single trust where the trusts have substantially the same grantor(s) and substantially the same primary beneficiaries, and a principal purpose of the structure is tax avoidance. Trusts that are carbon copies of one another (same trustee, same beneficiaries, same terms) are vulnerable to challenge. Each trust should differ meaningfully in structure, trustee, timing, or beneficiary class.

Trusts must be non-grantor trusts. If the founder retains certain powers over the trust, the IRS will treat the trust as a grantor trust for income tax purposes, meaning the exclusion flows back to the founder, not the trust. The trust must be structured so the founder is not the owner for income tax purposes.

Timing is everything. Gifts of QSBS to trusts should be completed well before a binding sale agreement is signed, and ideally before the sale is effectively fixed as a practical matter. The relevant inquiry is whether the transferor had a sufficiently fixed right to the sale proceeds at the time of transfer under assignment-of-income principles. (See “The Timing Problem” below for how California and New York evaluate when a transaction becomes fixed.)

Gift tax applies. Transferring shares to a trust uses a portion of the founder’s lifetime gift and estate tax exemption (currently $15M per person / $30M per married couple under the OBBBA for 2026, indexed for inflation). Gifting earlier, when the company’s valuation is lower, uses less exemption and maximizes the efficiency of the transfer. A qualified appraisal and a Form 709 gift tax return with adequate disclosure are required to start the statute of limitations on IRS valuation challenges.

State tax siting matters. Establishing a non-grantor trust in a tax-favorable jurisdiction may reduce or eliminate state-level tax in some cases, but the outcome depends on the trust’s specific facts and the tax rules of the relevant states, including beneficiary residency, fiduciary contacts, and source-income rules.

The bottom line: For founders with exits well above the per-issuer exclusion cap, QSBS stacking via irrevocable non-grantor trusts is one of the highest-leverage strategies available. But it requires careful structuring, independent legal counsel, and most importantly, time. This is not a strategy you can execute after a term sheet arrives.

For a deeper treatment of QSBS stacking mechanics, trust structures, and worked examples, see our dedicated guide: How Founders Use QSBS Stacking to Maximize Tax Exclusion.

Strategy 1C: QSBS Packing

QSBS stacking multiplies the exclusion by adding taxpayers. QSBS packing takes a different approach: it maximizes the exclusion available to a single taxpayer by increasing the basis of their QSBS stock.

Recall that the Section 1202 exclusion cap is the greater of the flat dollar limit ($10M pre-OBBBA, $15M post-OBBBA) or 10 times the taxpayer’s adjusted basis in the stock sold. For most founders who received shares at a nominal price, the flat dollar cap governs. But for founders who can establish a meaningfully higher basis at issuance, the 10x test can unlock exclusions far in excess of the flat cap, in some cases reaching into the hundreds of millions of dollars.

How It Works: Three Core Approaches

1. LLC-to-C-Corp Conversion

This is the most powerful, and most time-sensitive, packing strategy. Here’s the concept: rather than incorporating as a C-corp from day one (where founder shares are typically issued for a nominal amount), a founder builds the business as an LLC until it reaches a meaningful valuation, then converts the LLC into a C-corp.

In a properly structured LLC-to-C-corp conversion, the stock received may have a higher §1202 basis profile for purposes of the 10x exclusion analysis, often tied to the fair market value of the contributed business at conversion. That does not necessarily mean every tax-basis concept will match that FMV, so the structure must be modeled carefully.

Example: A founder builds an LLC to a $30M valuation, then converts to a C-corp. If the structure supports a $30M §1202 basis, the founder could potentially exclude up to $300M of gain (10x the $30M basis), compared to just $10M or $15M under the flat cap.

This strategy requires significant lead time. The conversion must happen before the company raises a priced round that would push aggregate gross assets above the $50M threshold (or $75M for post-OBBBA stock). More importantly, the five-year QSBS holding period clock does not start until the C-corp stock is issued at conversion, meaning a founder who converts too late may not have five years before a planned exit. This is a strategy that must be built into the company’s structure from the early stages, not retrofitted later.

There is also a meaningful downside scenario: if the company is sold at a price below the conversion value, the QSBS exclusion provides little benefit, because the appreciation up to the conversion value is not sheltered. Founders should model both upside and downside scenarios carefully with tax counsel before committing to this structure.

2. Contributing Cash or Intellectual Property at Issuance

A founder can increase their QSBS basis by contributing cash or intellectual property (IP) to the C-corp in exchange for stock at original issuance. The basis of the resulting QSBS equals the fair market value of the property contributed.

Example: A founder contributes $2M in cash and receives QSBS stock with a $2M basis. If the company is later sold and QSBS requirements are met, the founder can exclude up to $20M of gain under the 10x test, which is double the flat cap.

One caveat for appreciated property: while the contribution establishes a §1202 basis equal to fair market value, the built-in appreciation up to the contribution date is not itself sheltered by the exclusion. Only post-contribution appreciation qualifies.

This approach is more accessible than an LLC conversion but requires that the contribution occur at or before original issuance. Basis cannot be increased retroactively after the stock is issued.

3. Selling High-Basis and Low-Basis QSBS in the Same Tax Year

Section 1202 allows the 10x test to be applied to the aggregate adjusted basis of all QSBS sold by a taxpayer in a given tax year from the same issuer. A founder who holds multiple blocks of QSBS stock, some with a higher basis than others, can sell both in the same year to increase the aggregate basis figure and therefore the total exclusion available.

Example: A founder holds two blocks of QSBS from the same company: one with a near-zero basis and one with a $2M basis. Selling both in the same tax year produces an aggregate basis of $2M, supporting an exclusion of up to $20M under the 10x test.

Each block of stock must independently satisfy all Section 1202 requirements, including the applicable holding period based on when that block was acquired. Packing does not allow non-qualifying stock to inflate the exclusion available to qualifying shares.

Key Limitations to Keep in Mind

• Basis is measured at original issuance. For purposes of the 10x limitation, adjusted basis is generally determined at the time the stock is issued, without regard to increases in basis after issuance.
• The gross assets test still applies. The LLC’s aggregate gross assets must be below $50M (or $75M for post-OBBBA stock) at the time of conversion for the resulting stock to qualify as QSBS.
• These strategies are highly fact-specific. In conversion scenarios in particular, there can be a distinction between the basis used to calculate gain on a sale and the basis concept used for the Section 1202 10x limitation. These amounts may not always align, and the outcome depends on valuation, structure, and timing. Model these scenarios with qualified tax counsel before proceeding.

The bottom line: QSBS packing is most powerful for founders who plan their company structure early, ideally before incorporation or at the earliest stages of the business. The LLC-to-C-corp conversion in particular can dramatically expand the total exclusion available, but it requires years of lead time and careful coordination with the five-year holding period clock. If you are already operating as a C-corp with low-basis founder shares, the contribution and same-year sale approaches may still offer meaningful incremental benefit.

For a deeper treatment of QSBS packing mechanics and worked examples, see our dedicated guide: QSBS Packing: A Tax Strategy to Maximize Your Individual QSBS Exemption.

Strategy 2: Section 1045 Rollover

What if you need to sell QSBS before hitting the five-year mark? The Section 1045 rollover lets you defer the gain rather than lose it.

How It Works

• Sell QSBS held for more than six months
• Reinvest the proceeds into new QSBS within 60 days
• The deferred gain reduces the tax basis of the replacement stock
• The holding period of the original QSBS tacks onto the replacement stock, preserving your progress toward the 5-year mark (or, for stock originally acquired after July 4, 2025, the 3- and 4-year partial-exclusion tiers). Note: tacking also carries over the original acquisition date. Rolling pre-OBBBA stock into new QSBS does not upgrade it to the post-OBBBA $15M cap or tiered holding periods

The Section 1045 rollover remains unchanged under the OBBBA and is still one of the most underused tools in a founder’s toolkit. Section 1045 only works if you purchase replacement QSBS within 60 days of the original sale. If that window was missed, you generally cannot retroactively tack holding periods later. Gain deferral is available only to the extent the rollover requirements are satisfied.

Source: 26 U.S. Code § 1045 (Rollover of gain from qualified small business stock to another qualified small business stock)

Key Requirements at a Glance

• Both the original and replacement stock must qualify as QSBS
• Replacement QSBS must meet the active business requirement for at least six months after issuance

Strategy 3: Charitable Remainder Trust (CRT)

A CRT is an irrevocable trust that lets you contribute appreciated assets, defer capital gains on the sale of those assets, generate an income stream, and ultimately benefit the charitable organization(s) of your choice.

The Mechanics

1. Transfer company stock (or other appreciated assets) into the CRT before the sale closes
2. The trust sells the assets. Because a CRT is generally exempt from current income tax under IRC §664(c), the sale typically does not trigger immediate capital gains tax at the trust level. However, the gain is generally tracked inside the CRT and may be carried out to the income beneficiary over time under the CRT distribution rules
3. The trust pays you an income stream for life or for a specified term of up to 20 years. Payout rates must fall between 5% and 50% annually, calculated as a fixed dollar amount based on initial trust value (CRAT) or as a percentage of annually revalued assets (CRUT)
4. At the end of the term, the remaining assets pass to your designated charities
5. You receive an immediate partial charitable deduction based on the present value of the remainder interest

The charitable remainder must be at least 10% of the initial net fair market value of the assets placed in the trust. This is a firm IRS requirement.

Source: IRS Charitable Remainder Trusts; 26 U.S. Code § 664 — Charitable remainder trusts

There Are Two Types to Know

Strategy 4: Donor Advised Fund (DAF)

A DAF is one of the most flexible charitable tools available, and when used strategically in the context of a business exit, it can eliminate capital gains tax entirely on donated assets while generating an immediate tax deduction.

How a DAF Works in an Exit Context

1. Contribute appreciated stock to a DAF before the sale closes
2. You receive an immediate charitable deduction (see limits below)
3. The DAF sells the stock with no capital gains tax
4. You recommend grants to your chosen charities over time

Deduction Limits (IRS Publication 526, 2025)

Source: IRS Publication 526: Charitable Contributions

2026 OBBBA Update

Under the OBBBA, two changes affect charitable deductions for high-income itemizers, both effective for tax year 2026:

1. A new 0.5% AGI floor: only contributions exceeding 0.5% of AGI are deductible. For a founder with $10M in AGI, the first $50,000 in charitable contributions is non-deductible.
2. A cap on deduction value: for taxpayers in the 37% bracket, the tax benefit of all itemized deductions is capped at 35 cents per dollar (down from 37 cents). On a $5M DAF contribution, the combined effect of the floor and the cap is meaningful and should be modeled in advance.

A DAF is not a replacement for a CRT. A DAF gives you full control over the timing of grants and preserves flexibility. A CRT gives you an income stream. Both have a role depending on the size of your charitable intent.

Strategy 5: Installment Sales (IRC Section 453)

An installment sale under IRC Section 453 allows you to receive sale proceeds over multiple years and recognize capital gain income proportionally as payments are received. The tax is spread out, not eliminated, but the deferral can create real value.

Key Limitations to Know

Source: IRS Publication 537: Installment Sales; 26 U.S. Code § 453 — Installment method; 26 U.S. Code § 453A — Special rules for nondealers

Installment sales require willing buyers and careful deal structuring. They are most effective when the buyer is a strategic acquirer or private equity sponsor with flexibility on payment timing.

A Note on Qualified Opportunity Funds (QOFs)

For founders whose shares do not qualify for QSBS, or whose gain exceeds the available exclusion cap, a Qualified Opportunity Fund investment offers another deferral path. Capital gain reinvested in a QOF within 180 days of the sale is deferred, and the OBBBA made the Opportunity Zone program permanent: for investments made after December 31, 2026, deferred gain is recognized on a rolling five-year schedule, with a basis step-up for holding the QOF investment five years and full exclusion of the QOF investment’s own appreciation after a 10-year hold. QOF investments carry real investment risk and require diligence on the underlying fund, but as a tool for non-QSBS or above-cap gain, they belong in the conversation.

Deal Structure: How the Transaction Itself Affects Your Tax Result

Before turning to state and estate planning, one set of decisions deserves its own mention, because unlike everything else in this guide, it is decided at the deal table, not in a planning meeting.

A direct stock sale is the best structure for preserving QSBS treatment. The buyer acquires your C-corp shares, and your §1202 exclusion applies to the gain. An asset sale generally erodes the QSBS result: corporate-level tax applies first, and while shareholder-level liquidation gain may still qualify in some cases, the economics are usually significantly worse. A 338(h)(10) election, which treats a stock sale as a deemed asset sale, is generally inconsistent with QSBS economics for the same reason.

Stock-for-stock mergers carry a subtler trap. In a qualifying tax-free reorganization under §368, your QSBS character carries over to the replacement stock under §1202(h)(4), but only up to the amount of built-in gain at the exchange date. Appreciation in the acquirer’s stock after the exchange is not protected unless the replacement stock independently qualifies as QSBS (which, for a large public acquirer, it will not). Founders receiving acquirer stock in a deal should model this carefully, and in some cases, negotiating for more cash consideration or accelerating gain recognition preserves more after-tax value.

The practical takeaway: review the purchase agreement’s tax structure and elections early in negotiations. Whether the transaction is structured as a stock sale or an asset sale (directly or indirectly) can make or break the shareholder tax result that years of QSBS planning were designed to protect.

Strategy 6: State Tax Planning and Relocation

State taxes on a business exit are not a footnote. California founders in the highest bracket face a 13.3% state capital gains tax rate. New York City founders face up to 14.8% combined state and local tax. An important distinction: New York conforms to §1202, so federally excluded QSBS gain escapes New York tax as well. The relocation analysis for New York founders therefore centers on non-excluded gain (amounts above the exclusion cap, non-qualifying shares, or ordinary income items), while for California founders, who get no state exclusion at all, the entire gain is at stake. On a $30 million exit, the difference between being a California resident and a Florida resident is approximately $4 million.

No-Income-Tax States: At a Glance

Source: Tax Foundation State Individual Income Tax Rates and Brackets, 2026

Note: Washington state has been removed from this table. As of January 1, 2025, Washington levies a capital gains tax with a tiered rate structure: 7% on the first $1 million in taxable gains, and 9.9% on gains exceeding $1 million (under ESSB 5813). Washington is not a zero-tax state for capital gains purposes. Notably, however, gain excluded federally under §1202 currently remains outside Washington’s capital gains tax base (a 2026 bill to change this failed), and Washington’s new 9.9% income tax on income above $1 million (effective 2028) excludes long-term gains already subject to the capital gains tax.

Note on New Jersey: New Jersey, historically a non-conforming state, now conforms to §1202 for tax years beginning on or after January 1, 2026. NJ founders with qualifying QSBS may owe no state tax on excluded gain, changing the relocation calculus. California remains fully non-conforming.

What You Actually Have to Do

Moving states to save on taxes is legitimate. But it is not as simple as signing a lease in Miami. Both California and New York are aggressive in challenging residency changes, especially at the highest income levels.

Requirements for a defensible domicile change:

• Change voter registration, driver’s license, and car registration
• Establish new banking relationships and doctors in the new state
• Sever ties to your former state (sell your home, cancel club memberships)
• Give yourself at least two years before your exit for the cleanest outcome

Note: Limit your time in your former state. California presumes residency if you spend more than nine months in the state in a given tax year, though spending fewer than nine months does not create a presumption of non-residency. New York applies a 183-day threshold combined with a “permanent place of abode” test. Both states evaluate the totality of facts and circumstances, so the day count alone is not determinative.

Source: California Franchise Tax Board Publication 1031: Guidelines for Determining Resident Status; California Franchise Tax Board Residency and Sourcing Technical Manual

Critical timing rule: In California and New York, moving after a binding sale agreement is signed is generally too late, and the risk isn’t limited to the signing date itself. A move made when the transaction is a practical certainty can also be challenged. (See “The Timing Problem” below.)

Strategy 7: Estate Transfer Structures (GRAT and IDGT)

The strategies covered so far (QSBS, CRTs, DAFs, installment sales, and state planning) are primarily focused on reducing income tax at the time of exit. But for founders with exits of $20M or more, the federal estate tax is a parallel threat. At a 40% rate on assets above the exemption, an unplanned estate can lose nearly half its value before it reaches the next generation.

Two structures are particularly well-suited to founders holding pre-exit equity: the Grantor Retained Annuity Trust (GRAT) and the Intentionally Defective Grantor Trust (IDGT). Both move appreciation out of the founder’s taxable estate, ideally before the exit, when valuations are lower and the transfer is most efficient.

Grantor Retained Annuity Trust (GRAT)

A properly structured zeroed-out GRAT can shift future appreciation with little or no taxable gift, which is why GRATs are often used by founders who want estate transfer leverage without materially consuming exemption.

How it works: The founder (grantor) transfers shares into the GRAT and receives a series of fixed annuity payments back over the trust’s term. Those payments are calculated using the IRS §7520 rate. If the assets inside the GRAT appreciate at a rate exceeding the §7520 rate during the trust term, the excess (the “remainder”) passes to the trust’s beneficiaries (typically children or a dynasty trust) completely free of gift and estate tax.

For a founder holding company stock expected to appreciate significantly before or at exit, a GRAT can be a highly efficient way to transfer that upside to the next generation. Because the annuity payments return value to the founder, the taxable gift at inception is near zero, meaning no lifetime exemption is consumed.

Key limitations:

• The grantor must survive the trust term. If the founder dies before the GRAT term ends, some or all of the assets revert to the estate as if the GRAT had never been implemented.
• GRATs are less effective in high §7520 rate environments, because the hurdle rate the assets must beat is higher.
• GRATs do not offer generation-skipping transfer (GST) tax efficiency; assets passing from the GRAT to grandchildren or lower generations may still be subject to GST tax.

Best for: Founders who have already used a significant portion of their lifetime gift exemption, or who want to transfer appreciation without touching exemption at all. Particularly powerful when implemented early, while the company’s valuation is still relatively low.

Intentionally Defective Grantor Trust (IDGT)

An IDGT is a more flexible alternative to the GRAT that offers several structural advantages, particularly for founders who want to move a large position out of their estate while retaining more control over the mechanics.

How it works: The founder seeds the IDGT with an initial gift to support the trust’s economic substance and solvency. Many planners use a contribution in the 10% range as a rule of thumb, but the appropriate amount is structure-specific and not fixed by statute. The remaining value is then sold to the trust in exchange for a promissory note bearing interest at the applicable federal rate (AFR). Because the trust is intentionally structured to be a “grantor trust” for income tax purposes (but not for estate tax purposes) the sale is not a taxable event. No capital gains tax is triggered on the transfer, and QSBS status is preserved.

The founder receives interest-only payments on the note (at the AFR, which is typically low), and all appreciation above that rate accumulates inside the trust, outside the founder’s estate. At the end of the note term, the trust owns the assets free and clear.

Key advantages over a GRAT:

• Payments are interest-only (at the AFR), rather than the larger annuity payments required by a GRAT, making the cash flow burden on the trust significantly lower.
• IDGTs offer generation-skipping transfer tax efficiency. Because assets are valued for GST purposes at the time of contribution (before appreciation), rather than at the end of the term, the GST exemption can be allocated more efficiently.
• The structure is more flexible: the note can be refinanced, and the trust can make distributions to beneficiaries during the term.

Key limitations:

• Requires an initial seed gift to support the trust’s economic substance, which consumes a portion of the lifetime gift exemption.
• The sale-to-trust structure requires careful documentation and an arm’s-length promissory note at a defensible AFR to withstand IRS scrutiny.
• Like the GRAT, this strategy is most effective when implemented well before an exit, while the company’s valuation, and therefore the seed gift required, is lower.

Best for: Founders who want to move a large equity position out of their estate with lower ongoing cash flow requirements than a GRAT, and who want generation-skipping flexibility. Also well-suited to founders whose shares do not qualify for QSBS and who need an alternative estate-transfer vehicle.

The bottom line: GRATs and IDGTs are not income tax strategies. They are estate tax strategies. But for a founder building generational wealth from a single liquidity event, the estate tax exposure on an unplanned $40M exit can rival the income tax bill. These structures are most powerful when implemented early, before a deal is in motion, and should be coordinated with your QSBS and income tax planning rather than treated as a separate exercise.

The Timing Problem: Why the Goldilocks Window Matters

Every strategy in this guide has one thing in common: it requires time to execute properly. And yet timing is the dimension most founders get wrong. Not because they don’t care, but because the exit process moves fast and the planning process doesn’t.

There are two failure modes. The first is acting too late. The second, less discussed, is acting too early.

Too Late: When the Window Has Already Closed

Once a sale process reaches the point where the taxpayer has a sufficiently fixed right to proceeds, or the transaction is effectively certain, many pre-sale planning strategies become vulnerable or unavailable. In practice, that usually means planning should be completed well before binding sale documents and ideally before the deal is economically locked in. The courts have enforced this line: in Hoensheid v. Commissioner, T.C. Memo. 2023-34, a transfer of shares made two days before closing was disregarded under assignment-of-income principles, and the donor was taxed on the full gain.

In practical terms:

• QSBS stacking requires gifts to trusts to be completed before a deal is in motion, not after an LOI, not after a term sheet, and not after the board has approved a sale process.
• CRT and DAF contributions must be made before a binding sale agreement is signed. Contributing stock after a deal is effectively done will not eliminate the capital gain.
• State relocation requires a genuine, established change of domicile, ideally two or more years before the exit. In California and New York, moving (or gifting) after a binding sale agreement is signed is generally too late. Both states can assert that the gain was effectively fixed, and therefore taxable to you as a resident before the transfer. And the risk isn’t limited to the signing date itself: a transfer made when the transaction is a practical certainty (material contingencies cleared, terms fixed, approvals obtained) can be challenged under assignment-of-income principles even before anything is signed. Do not assume the closing date, or even the signing date, is the line that matters.
• GRATs and IDGTs are most efficient when the company’s valuation is still relatively low. Funding these structures after a late-stage financing round or after a strategic process has begun dramatically reduces their effectiveness, because the taxable gift or seed amount required is much larger.
• QSBS packing via LLC-to-C-corp conversion requires years of lead time; the five-year holding period clock doesn’t start until conversion, and the gross assets test must be satisfied at that moment.

The founders who capture the most value from these strategies are the ones who began planning when an exit felt probable but not imminent, typically one to three years out.

Too Early: The Conviction Problem

Planning too early carries its own risks, and they are real.

Most of these strategies involve irrevocable commitments: transferring shares to trusts, contributing stock to CRTs or DAFs, converting entity structures, or changing your state of domicile. These decisions consume resources (legal fees, appraisal costs, gift tax exemption) and some of them cannot be undone.

A founder who sets up three non-grantor trusts and funds them with QSBS at a $10M valuation, only to have the company fail to exit or exit at a fraction of that value, has spent real money and used real exemption for a benefit that never materialized. A founder who converts from an LLC to a C-corp to maximize QSBS basis, then sells below the conversion value, may end up worse off than if they had incorporated as a C-corp from the start.

The practical implication: conviction matters. These strategies make the most sense when there is reasonable confidence that an exit will occur at a meaningful valuation, rather than as speculative bets on an uncertain outcome.

The Goldilocks Window: One to Three Years Before Exit

The optimal planning window for most founders is one to three years before an anticipated exit. This is when:

• Exit probability is high enough to justify irrevocable commitments
• Valuations are typically lower than they will be at exit, making gifting and estate transfer more efficient
• There is enough time to establish genuine domicile in a new state
• Trust structures can be properly drafted, funded, and seasoned before a deal process begins
• The QSBS holding period clock is still running, or can be managed, without forcing a premature exit

This window is also when the lifetime gift and estate tax exemption is most efficiently deployed. The federal exemption (currently $15M per person / $30M per married couple under the OBBBA) is a use-it-or-lose-it tool in the context of a rising-value company. Gifting shares at a $15M valuation uses far less exemption than gifting the same shares at a $60M valuation. Every month of delay between the decision to plan and the execution of that plan has a real cost, measured in exemption consumed and after-tax wealth transferred.

A Strategy-by-Strategy Timing Summary

The bottom line: The strategies in this guide are not emergency measures. They are planning tools, and like all planning tools, they work best when there is time to use them properly. The founders who come out ahead are not necessarily the ones with the most complex structures. They are the ones who started early enough to have options.

Putting It All Together

The strategies in this guide are not a menu where you pick one and move on. For most founders approaching a significant exit, the real opportunity lies in how these tools interact, and in understanding which ones apply to your specific situation.

• Some of these strategies are combinatorial: they work together and amplify each other. QSBS stacking and packing can be layered on top of the base §1202 exclusion, multiplying the total gain excluded. A DAF contribution of private stock can generate a charitable deduction that reduces taxable income in the year of exit and may offset income recognized in that year, subject to the applicable deduction limits. State relocation, executed properly, compounds the benefit of every other strategy by eliminating state tax on whatever federal gain remains.
• Some are independent: they stand on their own and apply regardless of what else is in place. An installment sale is negotiated at the deal table, not in a planning meeting two years prior. A §1045 rollover is triggered by an early exit and executed within 60 days. A DAF contribution can be made even by a founder who did no prior planning, as long as it happens before the binding agreement is signed.

The right combination depends entirely on your specific exit fact pattern: your equity structure, holding period, state of domicile, exit valuation, charitable intent, family situation, and how much time remains before a deal is likely. There is no universal playbook, only the right playbook for your circumstances.

If you’re a founder working toward an exit in the next one to three years and want to understand which of these strategies apply to your situation, connect with our founder for a conversation. We work with founders at exactly this stage before the deal is in motion, while the planning windows are still open, and when the decisions you make today have the most impact on what you keep tomorrow.

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