Two promoters of conservation easement tax shelters are now serving federal prison sentences of 25 and 23 years for orchestrating roughly $1.3 billion in fraudulent deductions. The Tax Court, in dozens of opinions, has used phrases like "ludicrous," "wholly implausible," and "firmly planted somewhere in the realm of fantasy" to describe the appraisals. And on average, when these cases go to trial, the court allows only about 6% of the deduction the partnership originally claimed — while tacking on a 40% gross valuation misstatement penalty plus interest.
Yet the underlying tax incentive — a deduction under Internal Revenue Code Section 170(h) for permanently restricting the development of land — remains one of the most powerful tools in conservation philanthropy. Family farmers, ranchers, historic property owners, and legitimate land trusts use it every year to protect open space, watersheds, and historic façades while reducing their income tax. The problem is not the statute. The problem is the way a small number of promoters retrofitted it into a retail tax shelter.
This guide walks through what a legitimate Section 170(h) deduction actually requires, why the syndicated version of the structure became a target of enforcement, what changed under the SECURE 2.0 Act, and the very specific paperwork and red flags every donor and adviser needs to understand in 2026.
What a Section 170(h) Deduction Actually Buys
A conservation easement is a legally binding restriction recorded against the deed to a piece of real property. The landowner keeps the land. The qualified organization that accepts the easement — typically a land trust or government agency — gets the perpetual right to enforce the restriction.
Under Section 170(h), a donor can claim a charitable contribution deduction equal to the diminution in fair market value caused by the easement. If your 200-acre farm is worth $4 million unrestricted but only $1.5 million after the easement bars subdivision, your deduction is $2.5 million.
To qualify, a contribution must satisfy three pillars:
1. A Qualified Real Property Interest
The donor must contribute either the entire interest (minus retained mineral rights), a remainder interest, or — most commonly — a perpetual restriction on the use of the property. The restriction must be granted "in perpetuity" and run with the land. A 30-year or 50-year restriction is not enough. State law re-recording requirements (some states require renewal every 30 years just to keep the recording active) do not, by themselves, defeat perpetuity.
2. A Qualified Organization
The donee must be a public charity, governmental unit, or a supporting organization controlled by one of those. It must also have both a commitment to protect the conservation purpose and the resources to enforce the restriction. Land trusts accredited by the Land Trust Alliance generally clear this bar, but a donee that is brand new, undercapitalized, or has no monitoring program is a problem.
3. An Exclusively Conservation Purpose, Protected in Perpetuity
The easement must serve one of four statutory purposes: preservation of land for outdoor recreation or education, protection of a relatively natural habitat, preservation of open space (for scenic enjoyment or pursuant to a governmental conservation policy), or preservation of a historically important land area or certified historic structure. And the purpose must be protected forever — meaning the deed has to address what happens if the easement is later extinguished (proceeds go to the donee for similar conservation use) and bar inconsistent uses.
When those three pieces fit together and the appraisal is honest, the deduction is real. The IRS itself has emphasized that "a legitimate conservation easement often reflects long-standing ownership, an accurate and property-specific valuation, and compliance with the rules governing qualified conservation contributions."
How Syndication Turned the Statute into a Shelter
The abuse pattern is straightforward enough that the Senate Finance Committee, in a 2020 bipartisan report, called it a "Dollar Machine." A promoter would identify a piece of land worth, say, $5 million. The promoter would form a partnership, place the land inside it, and then sell partnership interests to high-income investors. The marketing material would promise something like "$4 in federal deductions for every $1 invested."
A few months later, the partnership would commission an appraisal that valued the highest and best use of the property as a luxury resort, gravel mine, or commercial subdivision — concluding the land was actually worth $40 million unrestricted. The partnership would then donate a conservation easement and claim a $35 million deduction, which would flow through to the partners on their K-1s. Investors who paid $100,000 got a $400,000 deduction.
The Tax Court has rejected this pattern with extraordinary consistency. The valuations rest on hypothetical development scenarios that ignore zoning, water rights, market absorption, infrastructure costs, and the simple fact that nobody actually paid the inflated number. When promoters Jack Fisher and James Sinnott were convicted in 2023, the evidence showed inflated appraisals supported by backdated documents — earning them prison sentences of 25 and 23 years respectively.
The 2.5x Partnership Disallowance Rule
Congress responded with Section 605 of the SECURE 2.0 Act of 2022, codified as Section 170(h)(7). The rule is blunt: if a partnership or S corporation makes a qualified conservation contribution, the entire deduction is disallowed to the extent the contribution amount exceeds 2.5 times the sum of each partner's or shareholder's relevant basis in the entity.
In practical terms: if four partners each contributed $250,000 in basis to the partnership ($1 million total), the partnership cannot deduct more than $2.5 million for a conservation easement. Try to claim $30 million and the deduction is zero — not capped at $2.5 million, but zero. The disallowance is at the partnership level and is calculated before any of the other Section 170(h) tests.
The provision applies to contributions made after December 29, 2022. The Treasury Department finalized regulations in TD 9999 on June 28, 2024, after a long comment period.
Three statutory exceptions soften the rule:
- Family partnerships and S corporations. Entities where substantially all of the interests are held by an individual and members of the individual's family are exempt.
- Three-year holding period. Contributions made after a three-year holding period of the underlying property by the partnership are exempt.
- Certified historic structures. Contributions whose conservation purpose is the preservation of a certified historic structure are exempt.
The first and third exceptions are narrow and require careful structuring. The historic structure exception, in particular, requires the building to be individually listed on the National Register of Historic Places or located in a registered historic district and certified as contributing to the district. Loose claims of "historic significance" do not qualify.
The Penalty Stack
When the IRS challenges a syndicated easement and wins — which it nearly always does at trial — the consequences cascade.
- 40% gross valuation misstatement penalty (Section 6662(h)). Triggered when the claimed value is 200% or more of the correct value. Given the typical 6% allowance rate, this penalty applies almost reflexively.
- 20% accuracy-related penalty (Section 6662(a)). Applies even where the valuation misstatement is "merely" 150% of the correct value rather than 200%.
- Promoter penalties (Section 6700). Apply to anyone organizing, selling, or assisting in an abusive shelter. Penalties can equal 50% of the gross income the promoter derived.
- Return preparer penalties (Section 6694). Apply to CPAs and attorneys who sign returns claiming the deduction without a reasonable basis.
- Section 6673 sanctions. The Tax Court has warned that taxpayers and attorneys advancing meritless positions can be sanctioned directly.
- Criminal exposure. Where backdating, sham appraisals, or knowingly false documents are involved, the Department of Justice has secured convictions for wire fraud, conspiracy, and tax fraud.
Notice 2017-10 designated syndicated conservation easement transactions with promised deductions of 2.5 times investment or more as "listed transactions." That designation, finalized as a regulation in October 2024, triggers separate disclosure obligations on Form 8886. Failure to file Form 8886 carries its own penalties under Section 6707A — and the six-year extended statute of limitations means the IRS can come back years later.
Form 8283 and the Substantiation Trap
Even legitimate conservation easements fail every year because the donor's paperwork falls short. Section 170(f)(11) requires strict substantiation, and courts routinely deny deductions for paperwork defects alone — no abuse needed.
The mandatory pieces for a conservation easement of any meaningful size:
- Qualified appraisal. Required for any noncash contribution over $5,000. For conservation easements valued over $500,000, a copy of the full appraisal must be attached to the return. The appraisal must be performed by a qualified appraiser with verifiable education and experience in valuing this specific type of property — generally meaning experience with conservation easement before-and-after valuations, not just residential real estate.
- Timing window. The appraisal must be completed no earlier than 60 days before the date of contribution and no later than the due date (including extensions) of the return on which the deduction is first claimed.
- Form 8283, Section B. Required for noncash contributions over $5,000. Must include the donor's cost basis, date acquired, fair market value, signatures from the qualified appraiser, and signature from the donee organization acknowledging receipt. For conservation easements, the donor must describe the easement terms in detail, list the acreage, and either summarize or attach the easement deed.
- Contemporaneous written acknowledgment. The donee must provide a written acknowledgment stating whether any goods or services were provided in return. This must be obtained before the donor files the return.
- Baseline documentation. While not always strictly required by the Code, the regulations effectively require baseline documentation reports for conservation easements to establish the property's condition at the time of donation. Courts have denied deductions for inadequate baseline reports.
Get any one of these wrong and the deduction can be denied in full, regardless of whether the underlying easement is real and the appraisal is honest.
AGI Limits and the Carryover
For most individual donors, the deduction is limited to 50% of adjusted gross income in the year of the contribution, with a 15-year carryover for any unused portion. Qualified farmers and ranchers — defined as taxpayers who earn more than 50% of their gross income from farming — can deduct up to 100% of AGI, also with a 15-year carryover. C corporations are generally limited to 10% of taxable income (with a 25% limit for qualifying farm corporations).
This generous AGI ceiling is part of what made syndicated easements attractive to high-income partners. It is also why legitimate easements remain useful for the right taxpayer: a $2.5 million deduction on a real farm easement can shelter five or six years of farm income.
The 2026 Settlement Opportunity
In May 2026 the IRS announced a renewed time-limited settlement initiative for eligible partnerships caught in syndicated easement disputes. The agency is sitting on roughly 1,100 cases — about 740 docketed in Tax Court and another 400 in Exam. The current terms, available for 90 days after a settlement letter is issued:
- No charitable contribution deduction is allowed.
- An "other deduction" equal to the partnership's approximate out-of-pocket costs is allowed.
- A gross valuation misstatement penalty applies at a reduced 10% rate rather than the statutory 40%.
- No upfront payment is required at election; the liability is subject to post-settlement collection.
Roughly 450 cases will get the no-upfront-payment treatment, 500 that previously rejected or let lapse a prior offer get a second chance, and 175 cases that never had an offer get their first. The IRS has been blunt that settlement is "the most efficient way to achieve finality." Given the 6% trial allowance and 40% penalty track record, partners doing the math usually agree.
A Practical Red-Flag Checklist
If you are evaluating a real estate transaction that includes a charitable easement component, ask the following questions before signing anything:
- Was the property held by the partnership for three or more years before the donation? If not, the family-partnership or historic-structure exception had better apply, or the deduction is going to be capped at 2.5x relevant basis.
- What multiple of investment is being marketed? Anything at or above 2.5x investment dollar-for-deduction triggers the Notice 2017-10 listed transaction rules and Form 8886.
- Who is the appraiser, and what is the highest-and-best-use assumption? If the appraisal relies on a hypothetical luxury resort, mine, or subdivision that no one has actually proposed, expect the IRS to challenge it.
- Who is the donee, and what is its monitoring budget? A new or undercapitalized donee is a liability. An accredited land trust with documented enforcement history is safer.
- Was Form 8886 filed? If the deal hit the 2.5x threshold and Form 8886 was not filed, both the partnership and each partner face separate disclosure penalties.
- Was the easement deed reviewed for extinguishment proceeds? Many denials turn on a single defective paragraph governing what happens if the easement is judicially extinguished.
If any answer raises a flag, walk. The penalty stack is large enough — and the criminal exposure for promoters and material advisers serious enough — that there is no version of "we can probably get away with it" worth the risk.
Keep Your Charitable Giving Records Audit-Ready
Whether you are donating a real conservation easement, a piece of artwork, or a stock portfolio, the IRS substantiation rules are unforgiving. Appraisals expire, acknowledgments get lost, and cost basis records vanish — and any one of those gaps can wipe out a legitimate deduction years later when the audit notice arrives. Beancount.io gives you plain-text, version-controlled accounting that keeps your charitable contributions, cost basis history, and supporting documentation in one transparent, queryable place — no vendor lock-in and no black box. Get started for free and bring the same rigor to your records that the IRS brings to its examinations.