How it works, in plain English
A conservation easement is a permanent legal restriction on land, such as a promise never to develop it, donated to a qualified land trust or government body. Under IRC 170(h), the donor can deduct the drop in the land's value caused by the restriction. When an owner who has held land for decades gives up development rights, that deduction can be real and legitimate.
The syndicated version turns that rule into a product. A promoter forms a partnership, has it buy a parcel (often rural land bought shortly before the deal), and gets an appraisal saying the land's "highest and best use" is a resort, quarry or subdivision worth many times what was paid. Investors buy partnership units late in the year. The partnership donates an easement, and the inflated appraisal produces a charitable deduction that flows to the investors at a multiple of what they put in. The pitch to someone who just sold a business or property is simple: write a check in December and wipe out a large part of this year's tax.
The economics only work if the appraisal is far above what anyone actually paid for the land. That gap is exactly what the IRS, Congress and the courts have attacked.
Who it fits, and who it does not
It does not fit a seller who wants a result that holds up. The deduction depends on a valuation the IRS presumes is abusive, the transaction must be disclosed as a listed transaction, and the statute of limitations stays open if it is not disclosed.
What can fit, and is not the same thing:
- A landowner donating an easement on land they have owned and used for years, valued by a qualified appraiser at a defensible number. Farmers and ranchers get special percentage limits under 170(b)(1)(E).
- A bargain sale of land to a land trust, part sale and part gift. See bargain sale to charity.
- Giving appreciated assets before a sale through a charitable remainder trust or a donor advised fund, where the charitable intent is real and the numbers are not manufactured.
Worked example: what the pitch targets
Assumptions (labeled, from the Big Sale Tax engine): married filing jointly, 2026 federal tables (Rev. Proc. 2025-32), a $5,000,000 long-term capital gain, no other income, Florida resident so no state income tax.
| Item | Engine result |
|---|---|
| Federal income tax (includes $6,440 of AMT) | $954,480 |
| Net investment income tax (3.8%) | $180,500 |
| Total federal tax on the sale | $1,134,980 |
A promoter would point at the $1,134,980 and show a deduction large enough to erase much of it. Three things the pitch deck leaves out:
- The 3.8% tax is untouched. A charitable deduction is not allocable to net investment income, so the $180,500 stays no matter how big the deduction is.
- Percentage limits apply. Charitable deductions are capped as a share of adjusted gross income, so a large deduction may only be usable over several years.
- If the deduction is disallowed, the full tax comes back with interest and, for contributions covered by 170(h)(7), a 40% penalty on the underpayment.
We do not model the promoter's deduction, because the number depends on an appraisal the law now treats as presumptively abusive.
IRS stance and audit risk
Listed transaction since 2016. In Notice 2017-10 the IRS identified syndicated conservation easements as listed transactions, requiring participants and material advisors to disclose them. The Tax Court (Green Valley Investors, 2022) and the Sixth Circuit (Green Rock, 2023) set the notice aside because it skipped notice-and-comment rulemaking.
Re-identified by final regulations. Treasury responded with final regulations, T.D. 10007, effective October 8, 2024, now at Treas. Reg. 1.6011-9. A transaction is listed when promotional materials offer a deduction of at least 2.5 times the investment, the investor buys into the pass-through that owns the land, and the entity donates the easement. Participants must file Form 8886; failure to disclose triggers penalties under IRC 6707A and keeps the assessment period open under IRC 6501(c)(10).
Disallowed by statute. The SECURE 2.0 Act added IRC 170(h)(7): for contributions after December 29, 2022, a partnership or S corporation easement deduction is disallowed if it exceeds 2.5 times the sum of each partner's relevant basis, with exceptions for a three-year holding period, family partnerships and certain historic structures. Treasury issued final regulations on 170(h)(7) in June 2024. A disallowance under 170(h)(7) carries a 40% penalty under IRC 6662(b)(10) and (h).
Enforcement. Syndicated conservation easements remain an active IRS LB&I compliance campaign, the Tax Court has repeatedly cut appraised values sharply, and federal prosecutors have won criminal convictions of promoters.
Costs and fees
The investor's "cost" is the subscription price, which is mostly fees: land acquisition markup, appraisal, legal opinion, promoter and placement fees, and the land trust's stewardship donation. Behind that sits the real cost if it fails: the original tax, interest from the original due date, accuracy or reportable-transaction penalties (20% to 40%), and professional fees to defend an audit or Tax Court case. Many investors who joined earlier deals took IRS settlement offers that required giving up most or all of the deduction and paying penalties.
How it compares with a Section 453 installment sale
A Section 453 installment sale does something quite different. It does not create a deduction; it spreads the gain over the years the buyer actually pays you, so each year's gain lands in lower brackets and the 3.8% tax threshold is crossed less hard. Section 453 is settled statutory law, there is nothing to disclose as a listed transaction, and the main risk is the buyer's credit, which a seller manages with a down payment, a first-position lien, a personal guarantee from the buyer's owners and strong note terms.
Using the same engine assumptions, a $5,000,000 gain taxed in one year costs $1,134,980 federal. Spread evenly as $500,000 of gain a year for ten years, at constant 2026 tables, the gain portion costs $64,835 a year, or $648,350 in total. That excludes the interest you earn on the note, which is ordinary income, and assumes the law holds still. The point is not that the spread wins in every case. It is that the installment sale reduces tax through timing that the Code expressly allows, not through an appraisal the IRS presumes is inflated.
How Hans helps
Hans does not offer or arrange syndicated conservation easements. The $5,000 Big Sale Tax Analysis models the defensible paths for your sale side by side (cash sale, installment sale, 1031 exchange, Opportunity Zones, charitable remainder trust and others) so you can compare real numbers before anyone hands you a subscription agreement. Start with the one-year vs spread estimator or see what the analysis includes.
What to know
A legitimate conservation easement on land you have owned for years can be a sound charitable gift. The syndicated, buy-in-for-a-deduction version is a listed transaction under Treas. Reg. 1.6011-9, deductions above 2.5 times basis are disallowed by 170(h)(7) for contributions after December 29, 2022, and the penalty for that disallowance is 40%. If you are already in one, talk to a tax attorney about disclosure and your options before the IRS contacts you.
Frequently asked questions
Is a syndicated conservation easement legit?
Is Notice 2017-10 still in effect after Green Rock?
What is the 2.5 times rule?
Can a conservation easement offset my capital gain from selling a business?
What happens if I already invested in one?
Are all conservation easements abusive?
Sources
- IRS Notice 2017-10
- T.D. 10007, final regulations (Federal Register, Oct. 8, 2024)
- Treas. Reg. 1.6011-9 (Cornell LII)
- Final regulations under IRC 170(h)(7) (Federal Register, June 28, 2024)
- IRC 170 (Cornell LII)
- IRC 6662 (Cornell LII)
- IRC 6707A (Cornell LII)
- IRS LB&I active campaigns
- IRS listed transactions
- Rev. Proc. 2025-32 (2026 inflation adjustments)
Last reviewed October 3, 2026. Education only, not legal or tax advice.
Keep comparing
Bargain sale to charity
Sell property to a charity below market value: part sale, part gift, with basis split between the two and a deduction for the gift part.
ReadCharitable remainder trust
Give appreciated property to a trust before the sale, let the trust sell it, take an income stream for life or up to 20 years, and leave the rest to charity.
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ReadInstallment sale (Section 453)
Report the gain as the buyer pays you instead of all in the year of sale, under rules that have been in the tax code for decades.
ReadMonetized installment sale
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An 831(b) captive that turns business income into deductible premiums; certain versions are listed transactions under 2025 final regulations.
ReadKnow your number before you sign.
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