Conservation Land Tax Incentive Program: Deductions and IRS Rules

A conservation easement tax deduction lets a landowner who permanently gives up development rights on qualifying property claim the value of that restriction as a charitable contribution on their federal income tax return. The deduction equals the drop in the land’s fair market value caused by the easement, and it can offset up to 50 percent of adjusted gross income each year (100 percent for qualifying farmers and ranchers), with any unused amount carrying forward for up to 15 years.¹ The rules sit in Internal Revenue Code Section 170(h), and they are strict.

What Qualifies as a Deductible Easement

The tax code recognizes four conservation purposes, and a donated easement must serve at least one of them:²

Preserving land for outdoor recreation or education by the general public.
Protecting a relatively natural habitat for fish, wildlife, plants, or a similar ecosystem.
Preserving open space (including farmland and forest) for scenic enjoyment or under a clearly identified federal, state, or local conservation policy, with a significant public benefit.
Preserving a historically important land area or a certified historic structure.

Public foot access is not a universal requirement. Habitat easements often restrict entry precisely because human traffic defeats the purpose, while scenic open-space easements typically require visual access rather than physical entry.

The easement must be donated to a qualified organization, generally a government body or a tax-exempt land trust, which takes on permanent responsibility for monitoring and enforcement. The restriction must be granted in perpetuity, binding every future owner of the land.³

How Much You Can Deduct

The charitable contribution equals the property’s fair market value before the easement minus its fair market value afterward. If land is worth $2 million with full development rights and $800,000 once the restrictions are in place, the deduction is $1.2 million. A qualified appraiser calculates both figures using a before-and-after method that reflects what a willing buyer would pay in each state.

Most individual donors can deduct up to 50 percent of adjusted gross income in a single year. Farmers and ranchers who earn more than half their gross income from agriculture can deduct up to 100 percent of AGI.¹ Congress made both enhanced limits permanent in the Protecting Americans from Tax Hikes (PATH) Act of 2015, so neither is scheduled to expire.⁴

When the donation is larger than what the annual limit allows, the excess carries forward for up to 15 succeeding tax years.⁵ That window matters most for a landowner with high-value property and moderate income. A farmer who donates a $1.5 million easement while earning $100,000 a year can still deduct the full amount over time rather than losing the excess.

Estate and Property Tax Effects

The federal income tax deduction is not the only tax break tied to a conservation easement. Under IRC Section 2031(c), the executor of an estate may elect to exclude from the gross estate up to 40 percent of the value of land already subject to a qualifying easement, capped at $500,000.⁶ The 40 percent figure drops by two percentage points for every percentage point the easement’s value falls below 30 percent of the unrestricted land value. The executor must make the election by the due date of the estate tax return, and the exclusion stacks with any income tax deduction the landowner claimed during life.

Local property taxes often decline as well, because removing development potential typically lowers the assessed value. The size of the reduction depends on local assessment practices and how much of the property’s value came from development rights rather than from agricultural or timber use. Some counties adjust the assessment automatically; others require the owner to notify the assessor and provide a copy of the recorded easement deed.

Documentation That Makes or Breaks the Deduction

Conservation easement deductions receive more IRS scrutiny than almost any other charitable contribution. A single missing document can void the entire deduction.

Qualified Appraisal

A qualified appraiser must prepare a written appraisal of the easement’s value. The appraisal window opens 60 days before the date of contribution and closes on the due date, including extensions, of the tax return on which the deduction is first claimed. Anything outside that window does not count.⁷ The appraiser must meet IRS qualification standards, follow generally accepted appraisal practices, and have no conflict of interest with the donor or the receiving organization.

Form 8283

Every noncash charitable contribution over $500 requires IRS Form 8283.⁸ Conservation easements almost always exceed $5,000, which triggers Section B of the form. Section B requires signatures from both the appraiser and an authorized representative of the receiving land trust or government body. A missing signature is one of the most common reasons the IRS denies a deduction.

If the claimed deduction is more than $500,000, the full qualified appraisal must be attached to the return.⁹ Below that threshold, keep the appraisal on file and produce it only if requested.

Baseline Documentation Report

The baseline documentation report is a snapshot of the property at the moment the easement takes effect. It gives the land trust a reference for future monitoring and typically covers soil types, water features, wildlife habitat, existing structures, land use, boundary descriptions, and photographs from multiple vantage points.¹⁰ Both the landowner and the person who inspected the property should sign it.

Deed of Conservation Easement

The deed is the legal backbone of the arrangement. It spells out which activities are restricted, which are permitted, and which require land trust approval. It must state that the restrictions run in perpetuity and identify the specific conservation purpose served. Boundary descriptions have to be precise, because vague language can invite disputes that put the easement at risk years later.

If the property carries a mortgage, the lender must sign a subordination agreement giving the easement priority over the mortgage. Without it, no deduction is allowed.³ The reason is practical: a foreclosure on an unsubordinated mortgage could wipe out the easement and destroy the perpetuity requirement. Most lenders will subordinate, but the negotiation takes time, so start it early.

The deed also has to guarantee the land trust a proportionate share of any proceeds if the easement is ever extinguished through a court proceeding or the property is sold, exchanged, or involuntarily converted. That share must be at least proportionate to the easement’s value relative to the full property value at the time of the original gift. A deed missing this clause can lose the deduction long after the ink is dry.

Many land trusts also ask for a one-time cash stewardship endowment to fund monitoring and enforcement. This is separate from the easement itself, is generally deductible as a charitable gift, and reduces the net financial benefit of the transaction. Ask about the amount early.

Filing and Recording Steps

Once every party has signed the deed, record it with the county recorder’s office where the property sits. Recording puts the restrictions in the public land records so future buyers, title companies, and lenders find them on a title search. Fees vary by county but are usually modest.

When you file your federal income tax return, attach the completed Form 8283. Attach the full appraisal too if the deduction exceeds $500,000.⁹ Electronic filers upload these as PDFs. Keep organized copies of every recorded document, the appraisal, the baseline report, the subordination agreement, and all correspondence with the land trust. The IRS can examine a conservation easement deduction for years after filing.

IRS Scrutiny and Penalties

Two enforcement issues shape how a legitimate donor should approach the deduction.

Syndicated Conservation Easements

The biggest enforcement target is the syndicated conservation easement, in which a promoter recruits investors into a partnership or LLC that donates an easement, then hands each investor a deduction several times larger than their investment. The IRS classified these deals as listed transactions in Notice 2017-10, which triggers mandatory disclosure and steep penalties for participants and advisors who fail to disclose.¹¹

The SECURE 2.0 Act of 2022 added IRC Section 170(h)(7), which flatly disallows the deduction when a partnership or S corporation’s claimed contribution exceeds 2.5 times the sum of each partner’s relevant basis. The rule applies to contributions made after December 29, 2022.¹²

Valuation Penalties

Inflated appraisals carry real consequences outside the syndicated context too. If the IRS finds you overstated the easement’s value by more than 150 percent of the correct amount, a 20 percent accuracy-related penalty applies to the resulting underpayment. If the overstatement exceeds 200 percent of the correct value, the gross valuation misstatement rules push the penalty to 40 percent.¹³ On a large deduction, that penalty can easily reach six figures.

Picking the Appraiser and Land Trust

The appraiser matters more than almost any other decision in this process. An appraiser who pushes the “before” value up or the “after” value down produces a bigger deduction on paper and a bigger target for audit. Look for someone with specific conservation easement experience, not just general real estate work. The IRS has successfully challenged deductions where appraisers relied on unsupported comparables or ignored market conditions.

The land trust matters too. Accredited members of the Land Trust Alliance follow national standards for governance, stewardship, and financial management. A well-run trust will negotiate the easement carefully, help you assemble the documentation, and monitor the property reliably for decades. A weak trust creates risk that the easement will not be enforced, which can eventually unravel the tax benefits. Ask how many easements the organization currently holds, how it monitors them each year, and whether it maintains a dedicated stewardship fund.

1
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts – Section 170(b)(1)(E)
2
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts
3
eCFR. 26 CFR 1.170A-14 – Qualified Conservation Contributions
4
Internal Revenue Service. Charitable Contributions of Conservation Easements
5
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts – Section 170(b)(1)(E)(ii)
6
Office of the Law Revision Counsel. 26 USC 2031 – Definition of Gross Estate
7
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts – Section 170(f)(11)(E)
8
Internal Revenue Service. Form 8283 – Noncash Charitable Contributions
9
Internal Revenue Service. Instructions for Form 8283
10
Natural Resources Conservation Service. Baseline Documentation Report Example
11
Internal Revenue Service. Syndicated Conservation Easement Transactions – Notice 2017-10
12
Federal Register. Statutory Disallowance of Deductions for Certain Qualified Conservation Contributions Made by Partnerships and Other Pass-Through Entities
13
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments – Section 6662(h)