Real Estate Tax Calc
What a conservation easement is
A conservation easement is a voluntary legal agreement between a landowner and a qualified land trust or government entity under which the landowner permanently restricts certain uses of their property — typically development — in exchange for a charitable deduction. The landowner keeps title and can continue using the land, but has given up specific development rights permanently.
The deduction is the difference between the property's FMV before the easement (with development rights) and FMV after (without development rights), as determined by a qualified appraisal. Under IRC Section 170(h), the donation must meet specific requirements: the land trust must be a qualified organization, the restriction must be permanent, and the conservation purpose must qualify (preservation of natural habitat, scenic open space, historical structures, or public recreation).
How the deduction works
Conservation easement deductions can be substantial — often 30–100% or more of the land's pre-easement value, depending on the development potential being surrendered. The deduction is a charitable contribution on Schedule A, subject to AGI limitations: generally limited to 50% of AGI per year, with a 15-year carryforward for the excess (or up to 100% of AGI for qualified farmers and ranchers).
Example: A 100-acre parcel with $2 million in development value donates an easement. If FMV drops to $500,000 after the easement, the deduction is $1.5 million. At a 37% combined rate, the tax savings over the carryforward period could approach $550,000.
IRS scrutiny and syndicated easements
The IRS has placed syndicated conservation easements on its "dirty dozen" list of tax scams for several years. These are promoter-marketed transactions where investors purchase land partnerships primarily to claim inflated easement deductions, often 4:1 or higher ratios of deductions to investment. The IRS has disallowed many such transactions and imposed penalties.
Legitimate conservation easements — donations made for genuine conservation purposes on land you own, valued by a qualified independent appraisal — remain a valid tax strategy. The scrutiny is aimed at fabricated or inflated valuations. Get a reputable appraiser, use a recognized land trust, and work with a tax attorney experienced in conservation transactions.
The substantiation requirements that make or break the deduction
Conservation easement deductions are disallowed on technicalities far more often than on valuation, so the paperwork is not a formality — it is the deduction. Because the gift exceeds $5,000, you must obtain a qualified appraisal from a qualified appraiser and attach a fully completed Form 8283, Section B, signed by both the appraiser and the donee organization. You also need a contemporaneous written acknowledgment from the land trust describing the gift and stating whether you received anything in return. The land trust should prepare a baseline documentation report establishing the property's condition at the time of the gift, and the conservation deed must be properly recorded. Missing or defective substantiation — a late appraisal, an unsigned 8283, no baseline report — has cost taxpayers the entire deduction in numerous court cases regardless of the underlying merit.
The perpetuity requirement and its common pitfalls
Under IRC Section 170(h)(5), the conservation purpose must be protected in perpetuity, and this requirement generates most of the litigation. Two deed provisions matter enormously. First, if the property is mortgaged, the lender must subordinate its mortgage to the easement before or at the donation — an unsubordinated mortgage can void the deduction because a foreclosure could extinguish the easement. Second, the deed's judicial extinguishment/proceeds clause must allocate proceeds to the land trust in a way the regulations accept if the easement is ever extinguished; a clause that improperly carves out post-donation improvement value for the donor has repeatedly caused courts to deny the deduction. Do not treat these as boilerplate — have counsel draft the deed specifically to satisfy the perpetuity regulations.
Recent law changes targeting syndicated deals
In response to abusive promotions, Congress enacted a statutory limit as part of the SECURE 2.0 Act (December 2022), adding IRC Section 170(h)(7). It generally disallows a conservation contribution made by a partnership or S corporation to the extent the claimed deduction exceeds 2.5 times the sum of the partners' or shareholders' relevant basis in the contributed property. This provision is aimed squarely at syndicated easements, where investors were sold deductions many times their cash investment. There are exceptions — for example, for contributions made by family partnerships and for property held for at least three years — but the core effect is that the outsized-ratio syndicated deduction is largely legislated out. Individual owner-donors giving an easement on land they have long held are generally not affected, but partnership structures now require careful analysis.
Façade easements on historic buildings
Real estate investors who own certified historic structures can donate a façade (preservation) easement restricting changes to the building's exterior. These qualify under Section 170(h)(4)(B) but carry extra rules: the easement must preserve the entire exterior and prohibit changes inconsistent with its historic character, you must attach a qualified appraisal and photographs, and for deductions over $10,000 a $500 filing fee applies. If you also claim the federal rehabilitation tax credit on the same building, the easement deduction is reduced. Historic façade easements have drawn IRS scrutiny similar to land easements, so the same discipline — a defensible appraisal, a clean deed, and complete substantiation — applies.
How the easement affects basis and a later sale
Donating an easement is not free of basis consequences. Under the regulations, you must reduce your basis in the property by the portion allocable to the donated rights — proportional to the value given up. If an easement reduces the property's value by 60%, roughly 60% of your basis shifts to the donated interest and is removed, leaving the retained land with a lower basis. That lower basis means a larger taxable gain if you later sell the (now restricted) property. The easement itself also depresses market value going forward, since the development rights are gone. None of this negates the strategy — the upfront deduction is usually far larger than the basis effect — but it should be modeled, not ignored, when you compare an easement to simply holding or selling.
Alternatives for conservation-minded owners
An easement is not the only way to combine conservation with tax benefit. A bargain sale — selling land to a land trust or government below fair market value — produces a charitable deduction for the discount plus (often reduced) sale proceeds, useful when you need some cash. An outright donation of land in fee to a qualified organization yields a deduction for the full fair market value and removes the property from your estate entirely. For owners who want to retain use during life, a remainder interest gift can work. Each alternative has its own valuation, substantiation, and AGI-limitation rules, so the right choice depends on your cash needs, the property's development potential, and your broader estate plan — decisions worth making with a tax advisor rather than a promoter.
The AGI limits and 15-year carryforward in practice
Because a conservation easement deduction is often enormous relative to income, the AGI limitation and carryforward usually control how long it takes to use. A qualified conservation contribution is generally deductible up to 50% of your contribution base (AGI) in the year of the gift, with any excess carried forward for up to 15 years — far longer than the standard 5-year carryforward for most charitable gifts. Qualified farmers and ranchers get an even more favorable limit of up to 100% of AGI. Consider an owner with $200,000 of AGI and a $1.5 million easement deduction: at the 50% limit, they can deduct $100,000 this year and carry forward $1.4 million, using roughly $100,000 per year for up to 15 more years. If income does not rise, a large deduction can partially expire unused, which is why the size of the easement should be matched to a realistic multi-year income projection.
State conservation tax credits
Beyond the federal charitable deduction, a number of states offer their own conservation tax incentives, and in several states these take the form of a credit rather than a deduction — a dollar-for-dollar reduction of state tax. Some states even make the credit transferable, letting a landowner who cannot use the full credit sell it to another taxpayer for cash, or refundable in part. These state benefits stack on top of the federal deduction (though the interaction can reduce the federal charitable deduction by the value of state benefits received under IRS guidance), and they vary widely in caps, carryforward periods, and eligibility. If you are considering an easement, check your state's specific program — the combined federal-and-state benefit can be materially larger than the federal deduction alone, but it also adds another layer of substantiation and compliance.
Frequently asked questions
How much is a conservation easement deduction worth?
The deduction equals the reduction in FMV caused by the easement restriction, determined by a qualified appraisal. There is no fixed ratio — it depends entirely on the land's development potential.
What is a qualified land trust?
A nonprofit organization under IRC 501(c)(3) whose primary purpose is to preserve land for conservation. The National Land Trust Alliance has a database of accredited land trusts.
Are syndicated conservation easements legal?
Some promoter-marketed syndicated transactions have been declared listed transactions by the IRS and disallowed. Legitimate owner-donor easements remain valid but require rigorous documentation and defensible appraisals.
What is a qualified appraisal and when do I need one?
For a noncash gift over $5,000 — which every easement is — you must obtain a qualified appraisal from a qualified appraiser and attach Form 8283, Section B, signed by both the appraiser and the donee. A late, missing, or defective appraisal has cost many taxpayers the entire deduction.
Did the law change for syndicated conservation easements?
Yes. The SECURE 2.0 Act (December 2022) added IRC Section 170(h)(7), which generally disallows a partnership or S-corporation conservation deduction to the extent it exceeds 2.5 times the owners' basis in the property — targeting syndicated deals. Individual owner-donors of long-held land are generally not affected.
Can I donate an easement on mortgaged property?
Only if the lender subordinates its mortgage to the easement before or at the time of the gift. An unsubordinated mortgage can defeat the perpetuity requirement and void the deduction, because a foreclosure could otherwise extinguish the easement.
Does donating an easement reduce my property's basis?
Yes. You must reduce your basis in the property by the portion allocable to the donated development rights, proportional to the value given up. That lower basis increases your taxable gain if you later sell the restricted property.
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.