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Land Conservation Value Calculator

Calculate conservation easement value based on development rights forgone and estimate federal and state tax benefits.

About this calculator

A conservation easement's value is the gap between what the land is worth if fully developed and what it's worth once development rights are permanently restricted. This calculator estimates unrestricted development value by multiplying current per-acre land value by a factor tied to development potential — from just 1.1× for minimal, remote parcels up to 8× for premium waterfront or urban-edge sites — then applies a restriction factor that depends on easement type: agricultural and forestry easements give up the most value (restricted value falls to just 30–40% of development value, since farmland and timberland otherwise carry high development potential), while permanent wilderness easements retain the most residual value at 70% of development value. The difference between development value and restricted value is the easement value — the charitable donation amount a landowner can claim. Federal and state tax savings are then computed by multiplying that easement value directly by your marginal tax brackets, which is a simplification: 26 U.S.C. § 170(b)(1)(E) caps the federal charitable deduction for qualified conservation contributions at 50% of adjusted gross income per year (100% for qualifying farmers/ranchers) with a 15-year carryforward, so this tool's federal deduction figure represents the full potential benefit, not necessarily what you can claim in a single tax year.

Property tax savings assume a 1.5% base rate scaled by the same restriction factor, and the estate tax exclusion is capped at $500,000 under 26 U.S.C. § 2031(c). Effective cost of conservation nets total tax benefits against easement value. Always confirm easement valuation with a qualified appraiser and tax attorney — this is a planning estimate, not tax advice.

Inputs

acres
$

Results

Conservation Easement Value

$625,000.00

≈ 15 Teslas

Total Tax Benefit

$231,250.00

≈ 6 Teslas

Easement Value per Acre$6,250.00
Unrestricted Development Value$1,250,000.00
Restricted Property Value$625,000.00
Federal Tax Savings$200,000.00
State Tax Savings$31,250.00
Annual Property Tax Savings$3,750.00
Estate Tax Exclusion$250,000.00
Effective Cost of Conservation$393,750.00

Figures current as of 2026. Sources: 26 U.S.C. § 170(b)(1)(E) — increases the charitable-contribution deduction limit for qualified conservation contributions to 50% of the taxpayer's contribution base (100% for qualifying farmers and ranchers), with a 15-year carryforward for any excess., 26 U.S.C. § 2031(c) — excludes from the gross estate the lesser of an applicable percentage of the land's value or $500,000.

How to Use This Calculator
  1. Enter the property acreage and current land value per acre.
  2. Set the development potential rating and conservation easement type.
  3. Input the landowner federal tax bracket and state tax rate.
  4. Review the conservation easement value and total tax benefit.
  5. Use these estimates to discuss donation value with a qualified appraiser or attorney.

How the result changes with Property Size

Property SizeConservation Easement ValueTotal Tax Benefit
50$312,500.00$115,625.00
75$468,750.00$173,438.00
150$937,500.00$346,875.00
250$1,562,500.00$578,125.00

What each input means

Property Size
Total acreage of the property.
Current Value per Acre
Current fair market value per acre before easement.
Development Potential
1 = Minimal (remote), 2 = Low, 3 = Moderate, 4 = High (near town), 5 = Premium (waterfront/urban edge).
Easement Type
Type of conservation easement, which sets the development-value restriction factor.
Federal Tax Bracket
Your marginal federal income tax rate.
State Tax Rate
Your state income tax rate. 0% for states with no income tax.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Property Size = 100, Current Value per Acre = 5000, Development Potential = 3, Easement Type = 3 = 6 input(s) provided
  2. Calculate Conservation Easement Value
    Conservation Easement Value
    625000 = $625,000
  3. Calculate Total Tax Benefit
    Total Tax Benefit
    231250 = $231,250
  4. Calculate Easement Value per Acre
    Easement Value per Acre
    6250 = $6,250
  5. Calculate Unrestricted Development Value
    Unrestricted Development Value
    1250000 = $1,250,000

Figures and sources

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.

Frequently Asked Questions

Why does an agricultural easement produce a larger donation value than a permanent wilderness easement on identical land?

The restriction factor sets what share of development value counts as the forgone, donatable portion — 0.7 for agricultural easements versus just 0.3 for permanent wilderness. That's because agricultural and forestry land is assumed to carry more untapped development potential to give up, so restricting it produces a bigger easement value even though a wilderness easement sounds more restrictive in plain terms.

Does the federal tax savings figure show what I can actually deduct in one year?

No — the calculator multiplies easement value directly by your tax bracket to show the full potential federal benefit. 26 U.S.C. § 170(b)(1)(E) caps the charitable deduction for qualified conservation contributions at 50% of adjusted gross income per year (100% for qualifying farmers and ranchers) with a 15-year carryforward, so claiming the full amount shown here typically takes several tax years, not one.

Why does the estate tax exclusion stop increasing once the easement gets large enough?

The calculator caps the estate tax exclusion at $500,000 even though it's computed as 40% of easement value, so once 40% of your easement value exceeds that cap, additional easement value no longer raises this particular output. It reflects the fixed $500,000 exclusion limit set by 26 U.S.C. § 2031(c) for land subject to a qualified conservation easement, not a scaling benefit.

How does raising the 'development potential' rating change the results?

Development potential drives a multiplier applied to your land's current per-acre value — from 1.1× at minimal potential up to 8× at premium waterfront or urban-edge potential — before the easement calculation even begins. Because every downstream figure (easement value, tax savings, property tax reduction) is derived from that inflated development value, a higher development-potential rating increases the entire set of outputs, not just the easement value alone.

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