Last revised: August 2026. This material is general information reflecting SoilTaxPro's agronomic methodology and its understanding of the referenced authority as of the preparation date. It is not tax, legal, or accounting advice, and no advisory or preparer relationship is created by its distribution. Tax authority — including IRS interpretation, Treasury guidance, and judicial decisions — may change at any time. Whether IRC §180 or §§167/168 applies to a given taxpayer, and whether any deduction is allowable, is a determination for that taxpayer's CPA or tax advisor.
Which Path Is Mine?
Active Farmer or Rancher
You operate the land, file Schedule F, and are "engaged in the business of farming" under IRS definitions.
Your Path
May be deductible in year of purchase as an ordinary farm expense on Schedule F — confirm applicability with your tax advisor.
Can also elect to amortize under §167 if a spread deduction fits your tax plan better.
Passive Landowner / Cash-Rent Landlord
You own and rent out the land, but do not actively farm it. Individual, trust, LLC, or corporate entity.
Your Path
Sections 167 & 168
Residual fertility may be treated as a depreciable asset — amortized over its useful life (typically 3–7 years). Confirm with your CPA.
Missed it? File Form 3115 for a catch-up adjustment.
Bought Land Years Ago? You Still Have Options.
Within 3 Years of Purchase
Amend the original tax return(s) to add the deduction or begin amortization.
More Than 3 Years Ago
IRS Form 3115 with a Section 481(a) adjustment — recognize all missed amortization as a catch-up deduction in the current year.
Section 180: The Active Farmer's Tool
IRS Section 180, enacted in 1954, was designed to let farmers expense fertilizer costs in the year incurred. Residual fertility purchased with the land works the same way — when an active farmer buys ground, the fertility that was built up through prior management is an input they paid for. Section 180 allows that value to be expensed as a current farm cost in the acquisition year, reported on Schedule F.
Who qualifies: Taxpayers "engaged in the business of farming" — active operators, farm partnerships, farm corporations. The standard is not merely owning farmland; it requires operating activity.
Sections 167 & 168: The Investor's and Landowner's Path
For landowners who do not actively farm, Section 180 is off the table. Instead, residual soil fertility is treated as a separate, depreciable asset under the general depreciation rules — similar to tile drainage, grain bins, or irrigation systems.
Fertility is not permanent. Crops consume nutrients each growing season, as documented by university crop-removal research. That measurable depletion establishes a useful life — often 3–7 years — and each year a portion of the fertility value is amortized as the tenant's crops draw down the nutrient reserves.
Side-by-Side Comparison
| Factor | Section 180 Active Farmer |
§167/168 Passive Landowner |
|---|---|---|
| Timing | May allow a full deduction in the year of purchase, if applicable* | Typically amortized over 3–7 years, if applicable* |
| Tax Form | Schedule F (Farm Income) | Form 4562 (Depreciation) |
| Who Qualifies | Active operators "in the business of farming" | Passive owners, cash-rent landlords, investors |
| Catch-Up | Amend <3 yrs; Form 3115 for older | Amend <3 yrs; Form 3115 for older |
| Documentation | Residual Fertility Report | Residual Fertility Report |
*Your CPA confirms which path applies and whether a deduction is allowable.
Need the Full Technical Comparison?
AgronomyPlus covers Section 180 line-by-line, conservative amortization models, Form 3115 walkthroughs, 1031 exchange implications, and inherited land scenarios.