QSBS Gifting and Stacking: Multiplying the Section 1202 Exclusion

Why the exclusion cap is the planning lever

Under Section 1202, the gain you can exclude from a qualifying sale of QSBS is limited to the greater of:

• $10,000,000 per taxpayer, per issuer (for stock issued on or before July 4, 2025), reduced by prior excluded gain from the same issuer; or
• 10× the taxpayer's aggregate adjusted basis in the shares sold.

For stock issued after July 4, 2025, the One Big Beautiful Bill Act (OBBBA, signed July 2025) raised the cap to $15,000,000 per taxpayer, per issuer (inflation-indexed from 2027), with tiered exclusion percentages based on holding period: 50% at three years, 75% at four years, 100% at five years or more.¹

How gifting works under IRC § 1202(h)

Section 1202(h) specifically addresses transfers of QSBS. When QSBS is transferred by gift, the donee is treated as having acquired the shares in the same manner as the donor and holds the donor's holding period.² This means:

• The donee tacks the donor's holding period. If the donor has held shares for four years, the donee is treated as having held them for four years on day one of ownership.
• The donee takes the donor's original adjusted basis in the shares — the same basis used in the 10× cap calculation.
• The donee can claim their own full exclusion cap against any gain recognized on a later sale, subject to qualifying the shares independently.

The result: gifting effectively multiplies the exclusion by the number of qualifying taxpayers who receive shares — if the shares qualify and the transaction is structured correctly.

What a stacking plan looks like in practice

Consider a founder who acquired $1M in QSBS basis in a Series A round in 2022 (before OBBBA, so the $10M or 10× cap applies). By 2026, the company is worth $40M and an acquisition is approaching. The founder's exclusion cap is the greater of $10M or $10M (10× $1M basis) = $10M. Gain would be roughly $39M, with $29M fully taxable at the federal level plus state tax in a conforming state.

If, before any binding agreement to sell, the founder gifts $5M in stock to a spouse, $5M to an irrevocable non-grantor trust for children, and retains $30M:

• Founder: $29M gain, up to $10M excluded (10× $600K basis in retained shares)
• Spouse: $5M gain, up to $5M excluded (or up to $10M if basis supports it) — potentially zero federal tax on the gift
• Trust: $5M gain, up to $5M excluded — potentially zero federal tax

In a scenario where the 10× basis cap applies rather than the dollar cap, careful gift sizing — retaining shares with proportionally higher basis — can maximize what each taxpayer can exclude. This is the planning problem an advisor and CPA solve together.

The timing requirement: the window closes at the LOI

Gifts of QSBS must occur before a binding obligation to sell exists. Once a letter of intent, term sheet, or merger agreement creates a legally binding commitment to transfer the shares at a fixed price, a subsequent gift of those shares is treated as if the donor sold them and then gifted the cash proceeds — the exclusion cannot be claimed by the donee.³

The best time to begin QSBS gifting planning is before any transaction is publicly rumored or formally initiated: 12–18 months before an anticipated acquisition or IPO. Earlier is almost always better.

Which transfers qualify

Section 1202(h) preserves QSBS status for transfers by gift or at death. Eligible recipients include:

• Individual family members (spouse, adult children, parents) — each gets their own exclusion cap.
• Non-grantor irrevocable trusts — treated as separate taxpayers for Section 1202 purposes, with their own exclusion cap.
• Grantor trusts — treated as the grantor's own shares for income tax purposes, so gifts to a grantor trust generally do not create a new exclusion cap.

Transfers to partnerships or S corporations generally do not preserve QSBS status in the hands of partners or shareholders unless narrowly structured, and should not be used as stacking vehicles without specific legal analysis.⁴

Gift tax mechanics

Gifting shares creates potential gift tax liability. The key numbers for 2026:⁵

• Annual exclusion: $19,000 per donor, per recipient (2026). A married couple using gift-splitting can give $38,000 per recipient per year without using lifetime exemption.
• Lifetime exemption: $15,000,000 per person (OBBBA made this permanent; formerly scheduled to sunset in 2026 to ~$7M). Using lifetime exemption for a large gift does not create gift tax as long as the total lifetime taxable gifts stay below $15M. It does reduce the estate exemption by the same amount.

A $5M gift of QSBS shares to a trust uses $4,981,000 of the donor's lifetime exemption (after the $19K annual exclusion). This is generally worth doing when the QSBS exclusion can shelter $5M+ of federal gain tax — the math favors gifting even when lifetime exemption is consumed.

IRS scrutiny: the stacking warning

In May 2026, Treasury's assistant secretary for tax policy publicly stated that the IRS is working on guidance targeting QSBS stacking and called it "abuse."⁶ As of the date of this writing, no formal regulations have been issued — transfers to family members and non-grantor trusts remain legally permissible.

However, the pending guidance creates real uncertainty. Strategies that push stacking into aggressive territory — such as transferring shares to dozens of trusts, or structures with no economic substance beyond multiplying the exclusion — face heightened scrutiny risk. Well-documented gifting to a spouse and a small number of children or trusts, for legitimate estate planning purposes, represents different risk exposure than engineered mass-stacking.

Anyone planning a stacking strategy in mid-2026 or later should have an attorney monitor for new regulations before executing transfers. The planning window may be narrowing.

State tax interaction

QSBS gifting reduces federal tax. It does not automatically reduce state tax in states that do not conform to the federal exclusion. California, Pennsylvania, Alabama, and Mississippi do not recognize the Section 1202 exclusion — full gain is taxable at the state level regardless of how many family members receive shares.⁷

In California, for example, a founder living in the state would owe ~13.3% state tax on the full gain even after using the federal exclusion. Gifting shifts federal exposure but does not reduce California tax. The post-exit domicile question — whether relocating to a zero-tax state before the sale is viable and legally supportable — is a separate planning issue that requires its own analysis.

When to start and who to involve

1. Begin planning well before a transaction. At least 12 months before a realistic exit is preferred; 18–24 months is better for complex gifting structures.
2. Gather QSBS documentation first. Confirm C corporation status, original issuance, gross assets at issuance, active business facts, and holding period before modelling gifting scenarios. See the Section 1202 checklist.
3. Model each recipient's cap separately. Basis allocation, holding period tack, and 10× cap math differs for each donee depending on how many shares and what basis they receive.
4. Engage legal counsel before transferring. Gift documentation, trust instruments, and cap table updates must be executed correctly. Gift tax returns (Form 709) are required when lifetime exemption is used.
5. Coordinate with the financial plan. The post-gift, post-exit portfolio, cash needs, estate plan, and charitable plan should be designed together — not sequentially.

See also: QSBS state tax conformity guide and the QSBS exclusion calculator.

Get matched with a QSBS planning advisor

QSBS gifting and stacking require coordination across a financial advisor, CPA, and estate attorney — and the planning window closes when a transaction becomes binding. Tell us where you are in the process and we will match you with a fee-only advisor experienced in founder liquidity planning.

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Sources

1. IRC § 1202, as amended by the One Big Beautiful Bill Act (OBBBA, July 2025). Tiered holding percentages (50%/75%/100%) and $15M cap apply to stock issued after July 4, 2025. IRS 2026 inflation adjustments (OBBBA).
2. IRC § 1202(h)(2)(A) — transfers by gift. Donee takes donor's basis and holding period for purposes of the Section 1202 exclusion. See also BDO: QSBS Estate and Trust Planning.
3. IRS Notice and case law on constructive sale / step-transaction doctrine. Gifts made after a binding commitment to sell are generally treated as a sale followed by a gift of proceeds. See LegalClarity: IRC § 1202 Rules.
4. IRC § 1202(g) — pass-through of QSBS gain rules for partnerships and S corporations. FBT Gibbons: Maximizing the Section 1202 Exclusion.
5. IRS Rev. Proc. 2025-67: 2026 annual gift exclusion $19,000; OBBBA made the $15M unified credit permanent. IRS 2026 tax inflation adjustments.
6. Kenneth Kies, Treasury assistant secretary for tax policy, May 2026 conference statement on QSBS stacking. CBIZ: IRS to Target QSBS Stacking.
7. State QSBS conformity varies. CA, PA, AL, MS do not conform. See QSBS state tax conformity guide for current state-by-state details.

Values and rules verified against IRC § 1202 (as amended by OBBBA, July 2025) and IRS 2026 inflation adjustments. Annual gift exclusion $19,000 and lifetime exemption $15,000,000 are 2026 figures. QSBS stacking guidance from IRS/Treasury is pending as of May 2026 — consult counsel before executing any strategy described here.