Charitable Remainder Trust: Selling a Concentrated Position Without the Immediate Tax Hit
Investors sitting on a single stock or property that has grown into most of their net worth face an uncomfortable choice: sell and hand a large chunk to capital gains tax, or keep holding a position too concentrated for real comfort. A charitable remainder trust offers a structured third path, at the cost of giving up the asset irrevocably.
The core principle
A charitable remainder trust (CRT) is an irrevocable trust funded with an appreciated asset, most often stock, business interests, or real estate. Because the trust itself is a tax-exempt entity, it can sell the contributed asset without triggering the capital gains tax that would be owed if the donor sold it directly. The trust then invests the full proceeds and pays the donor, or another named beneficiary, an income stream for a set term of years, up to 20, or for the beneficiary's lifetime. Whatever remains in the trust at the end goes to one or more designated charities, which is where the "remainder" in the name comes from.
Two structures are common. A charitable remainder annuity trust (CRAT) pays a fixed dollar amount each year, set when the trust is created. A charitable remainder unitrust (CRUT) pays a fixed percentage of the trust's value, recalculated annually, so payments rise and fall with the portfolio. The IRS also requires that the projected remainder value passing to charity, calculated using government-published actuarial assumptions at the time the trust is funded, equal at least 10% of the initial contribution, which caps how high the annual payout rate can be set relative to the donor's age or the trust's term.
The choice between the two structures involves a genuine tradeoff. A CRAT offers payment certainty, useful for a donor who wants predictable income for budgeting purposes, but it cannot accept additional contributions after it is funded, and a run of poor investment performance can, in an extreme case, deplete the trust faster than expected since the fixed payment does not adjust downward. A CRUT's payments fluctuate with the portfolio's value, which means income drops during a market downturn exactly when the donor might prefer stability, but it also allows additional contributions over time and provides some natural inflation protection during periods of portfolio growth, since the payout recalculates upward along with the trust's value.
How the math works
Example 1: the basic mechanics. An investor holds stock worth $1,000,000 with a cost basis of only $100,000, an embedded gain of $900,000. Selling it directly would trigger long-term capital gains tax of roughly $900,000 × 0.20, or $180,000, at a 20% federal rate, before even counting the 3.8% net investment income tax that often applies at this income level, which would add roughly another $34,200. Instead, the investor contributes the stock to a CRUT, which sells it tax-free inside the trust and invests the full $1,000,000. The trust then pays the investor a 5% unitrust payout, or $50,000 in the first year, recalculated annually based on the trust's then-current value.
Example 2: comparing the after-tax outcome to an outright sale. Had the investor simply sold the stock outright and paid the combined roughly $214,200 in federal capital gains and net investment income tax, only about $785,800 would remain to reinvest. At a hypothetical 5% withdrawal rate on that smaller base, annual income would be roughly $785,800 × 0.05, or about $39,290, versus the $50,000 the CRUT generates on the full untaxed $1,000,000. The gap, roughly $10,700 a year in this example, is the direct benefit of deferring the tax hit inside the trust, though it comes bundled with the loss of direct control over the principal and the certainty that the remainder ultimately passes to charity rather than heirs.
Example 3: estimating the income tax deduction. Continuing the same scenario, suppose the government actuarial tables, applied to a 65-year-old donor receiving a 5% CRUT payout for life, produce a projected present value of the remainder interest passing to charity equal to roughly 42% of the initial contribution. On the $1,000,000 contribution, that works out to an immediate income tax deduction of approximately $420,000, subject to the usual percentage-of-income limitations on charitable deductions in the year claimed, with any unused portion generally eligible to carry forward for up to five additional years. At a 37% marginal federal rate, fully using that deduction could reduce federal tax owed by roughly $155,400 over the years it is claimed, a meaningful offset layered on top of the capital gains deferral already achieved inside the trust.
How it shows up in real portfolios
A retiring business owner selling a company built up over decades, with a cost basis far below the sale price, sometimes contributes a portion of the sale proceeds, or shares of the business itself before the sale closes, to a CRT to defer tax on that specific slice while converting it into a predictable income stream through retirement.
A high-earning professional holding a large position of long-appreciated, low-basis stock from decades of equity compensation or a single early investment that grew enormously often uses a CRT as one tool among several, alongside an outright charitable gift of a smaller appreciated block and ordinary diversified sales up to the amount that fits comfortably within a given year's tax bracket, rather than relying on the CRT for the entire position.
A donor with strong existing charitable intent, who was already planning to leave a meaningful bequest to a specific cause, often finds a CRT particularly attractive, since it accomplishes the eventual charitable gift while extracting real lifetime income value from the asset in the meantime, a combination that a simple outright gift or a simple taxable sale cannot replicate on its own.
Some donors also pair a CRT with a separate irrevocable life insurance trust funded with a portion of the income the CRT generates, a strategy sometimes called wealth replacement. The idea is straightforward: since the CRT's remainder ultimately passes to charity rather than heirs, a portion of the lifetime income stream is used to fund life insurance premiums, replacing for the family, outside the estate, some or all of the value that would otherwise have passed to them had the asset simply been inherited directly.
Actionable breakdown
- The trust, not the donor, sells the asset, avoiding immediate capital gains tax.
- A CRAT pays a fixed dollar amount; a CRUT pays a fixed percentage.
- The donor typically gets an immediate partial income tax deduction.
- Income payments to the donor are taxed as they are received.
- The remainder value to charity must equal at least 10% of the gift.
- The trust is irrevocable; the asset cannot be reclaimed later.
- Best suited to highly appreciated, low-basis, concentrated positions.
- Consider a wealth replacement life insurance trust alongside it.
Common pitfalls
- Funding a CRT with an asset you or your heirs might want back. The irrevocable structure means there is no undo button once the trust is funded.
- Underestimating setup and running costs. A CRT requires legal drafting, an independent trustee, and ongoing tax filings, which typically cost several thousand dollars a year.
- Skipping the comparison against simpler alternatives, like an installment sale or straightforward tax loss harvesting elsewhere in the portfolio, which can sometimes achieve a similar after-tax outcome with far less structural complexity.
- Misjudging the deduction size. The income tax deduction is based on the projected remainder to charity, not the full contribution, and donors are sometimes surprised the deduction is smaller than expected.
- Choosing the wrong payout structure for the goal. A donor who values payment certainty over inflation protection may regret a CRUT, and vice versa, if the choice was not deliberate.
Related concepts
See trust for the broader legal structure and grantor trust for a related but different arrangement, along with estate tax for how large gifts interact with estate planning more broadly. Our estate planning guide covers where a CRT fits alongside simpler charitable giving strategies.
The bottom line
A charitable remainder trust can convert a concentrated, low-basis position into diversified lifetime income while supporting a cause you care about, but only for donors with genuine charitable intent and the patience for irrevocable, professionally drafted legal structure.