Charitable Lead Trusts for Concentrated Wealth

For a founder, executive, or early-stage investor holding a concentrated low-basis position, the charitable lead annuity trust (CLAT) is a uniquely well-suited transfer vehicle. The CLAT pays a fixed annuity to charity for a term of years and passes the remainder to family. When zeroed out using the §7520 rate, the upfront gift to family is approximately zero. If the funded asset's total return exceeds the §7520 hurdle (currently around 5.0%–5.4%), the entire excess passes to family transfer-tax-free. Concentrated equity — by definition a high-volatility, often-high-expected-return asset — is the highest-leverage CLAT funding source.

The mechanics

Authorized under §2522(c)(2)(B) and §170(f)(2)(B). A grantor or non-grantor irrevocable trust pays a fixed annual annuity to one or more qualified charities for a term of years (typically 10–20). Remainder passes to non-charitable beneficiaries (children, grandchildren, or trusts for their benefit).

• Gift value to remainder beneficiaries at funding equals: funded asset value minus present value of the charitable annuity stream, discounted at the §7520 rate.
• Zeroed-out CLAT: annuity calibrated so the present value of the annuity equals the funded asset value. Reported gift: approximately $0. Safe-harbor forms in Rev. Proc. 2007-45.
• Shark-fin CLAT: back-loaded annuity payments (small early, large at end) reduce the trust's required investment income in early years and allow capital appreciation to compound. The IRS has not formally blessed the structure but has not challenged properly drafted shark-fins.
• Grantor vs non-grantor election. Grantor CLAT: upfront §170 income tax deduction equal to PV of annuity (subject to AGI limits); grantor taxed on trust income over term. Non-grantor CLAT: no upfront deduction; trust pays its own tax, partly offset by §642(c) deduction for annual annuity payments.

Why concentrated stock is the optimal funding asset

• High expected return. Single-name equity volatility translates to expected returns well above the §7520 hurdle on a holding-period basis. Even after factoring in idiosyncratic risk, the expected CLAT remainder is materially positive.
• Diversification benefit. The CLAT can sell the stock and reinvest in a diversified portfolio. The annuity to charity then comes from the diversified portfolio, not the concentrated stock.
• No capital gains acceleration. A grantor CLAT does not recognize gain on funding (transfer to grantor trust is not a sale). A non-grantor CLAT recognizes gain at sale but pays it as a §1411-eligible trust at compressed rates with the §642(c) offset.
• Wealth-transfer math. Concentrated stock often appreciates non-linearly post-IPO or post-event. The CLAT captures that excess for family.

Worked example: $20M concentrated position, 15-year zeroed-out CLAT

Founder, age 55, holds $20,000,000 of concentrated stock (basis $200,000). Contributes to a 15-year zeroed-out CLAT. §7520 rate: 5.2%. Annual annuity required to zero out: approximately $1,955,000 per year for 15 years.

• Reported gift value to family remainder beneficiaries: ~$0.
• Total cash flow to charity over 15 years: $29,325,000 (nominal).
• Trust investment scenario A (7% annual return): Year 15 remainder approximately $7.6M to family, transfer-tax-free.
• Trust investment scenario B (10% annual return): Year 15 remainder approximately $26.0M to family, transfer-tax-free.
• Trust investment scenario C (3% annual return): Trust exhausts before year 15; family receives $0. Founder is no worse off than having held the stock (still alive, still funded charity).

Coordination with other strategies

• Combined with QSBS. A founder with QSBS-eligible stock may use the §1202 exclusion personally on a portion and fund a CLAT with the remainder. The CLAT charity is a non-eligible §1202 holder but the gain inside the CLAT may also qualify for §1202 if the trust meets the original-issuance requirement (rare).
• Combined with §83(b) early exercise. Funding a CLAT with stock acquired at low strike via §83(b) election compounds the leverage.
• GST exemption allocation. A multi-generational CLAT (paying remainder to grandchildren or dynasty trust) requires explicit GST allocation on Form 709. Allocation cost: ordinary GST exemption (currently $13.99M, rising to $15M in 2026). The GST exemption is allocated against the remainder beneficiary's actuarial value — close to zero in a zeroed-out CLAT — making CLATs an efficient GST-allocation vehicle.
• State income-tax planning. A non-grantor CLAT sited in a no-income-tax state (Nevada, South Dakota, Delaware) and not deriving source income from a tax state avoids state income tax on accumulated income.

Common mistakes

• Funding in a high §7520 rate environment with low-return assets. The CLAT only "works" if the trust's actual return exceeds the §7520 hurdle. Funding into rising-rate periods compresses the spread.
• Choosing a non-grantor structure when current ordinary-income deduction is more valuable. A founder with a large compensation year benefits more from the grantor CLAT's upfront §170 deduction than from the deferred non-grantor structure.
• Selecting a charity that may not exist for the full term. Term of 15–20 years exceeds the planning horizon of many small charities. Use established public charities or a donor-advised fund as the annuity recipient.
• Failing to fund annuity payments timely. Late annuity payments under §664-analog rules (for charitable lead trusts the rules are less strict but still important) can produce excise taxes under §4942 if the trust is treated as a private foundation.
• Forgetting the §170(f)(2)(C) qualification requirement for grantor CLAT. The trust must be a "guaranteed annuity" with payments to qualified §170 charities; defective drafting eliminates the income tax deduction.
• Mortality without succession. If the grantor dies during the term of a grantor CLAT, the unamortized portion of the upfront §170 deduction is recaptured as ordinary income.

Sources

• Internal Revenue Code §2522(c)(2)(B): law.cornell.edu/uscode/text/26/2522
• Internal Revenue Code §170(f)(2)(B): law.cornell.edu/uscode/text/26/170
• Internal Revenue Code §7520: law.cornell.edu/uscode/text/26/7520
• Rev. Proc. 2007-45 (CLAT safe-harbor forms): irs.gov irb07-29
• Treasury Regulation §1.170A-6, charitable contributions in trust: ecfr.gov §1.170A-6

A CLAT can move concentrated wealth to family without gift tax — when the math works. Explore the free educational tool.