Section 180 vs. Sections 167, 168, 179, and 611: Understanding Soil Fertility Tax Deductions

If you’ve recently purchased farmland, you may have encountered several different IRS tax-code sections associated with soil fertility deductions. Section 180, Section 167, Section 168, and even Section 611 are sometimes discussed in connection with agricultural tax planning.

So what’s the difference, and which one applies to your farmland purchase?

The important distinction is that these provisions are not interchangeable elections under Section 180. They establish different tax treatments, eligibility requirements, and deduction methods. However, several may be relevant when evaluating the tax benefits associated with acquiring farmland.

Understanding these differences helps farmland buyers and their accountants identify potential deductions while avoiding confusion over which tax provisions actually apply.

1. IRC Section 180: Fertilizer and Soil Fertility Deductions

Section 180 is the provision most directly associated with fertilizer expenditures and excess soil fertility deductions.

It allows qualifying farmers to elect to immediately deduct certain fertilizer, lime, and soil-conditioning expenditures that would otherwise be capitalized and recovered over time.

In qualifying farmland acquisitions, a properly substantiated allocation of the purchase price to residual soil fertility may support a deduction under this provision. Eligibility and treatment depend on the particular transaction and taxpayer.

The IRS explains the fertilizer deduction and election in Publication 225, the Farmer’s Tax Guide.

https://www.irs.gov/publications/p225

2. IRC Section 167: Depreciation

Section 167 establishes the general federal income tax deduction for depreciation of qualifying property used in a business or held for producing income.

In certain circumstances, purchased residual soil fertility may be evaluated as a separately identifiable asset with a determinable useful life. Whether that asset qualifies for depreciation requires a separate legal and factual analysis.

https://www.law.cornell.edu/uscode/text/26/167on 167 is not simply an alternative election under Section 180.

LII / Legal Information Institute

3. IRC Section 168: Accelerated Cost Recovery

Section 168 establishes the Modified Accelerated Cost Recovery System (MACRS) and additional depreciation rules for qualifying property.

For farmland buyers, this provision can become relevant when allocating an acquisition’s purchase price among depreciable agricultural assets.

Importantly, Section 168 does not automatically make purchased soil nutrients eligible for accelerated depreciation. The property must independently satisfy the applicable requirements.

https://www.law.cornell.edu/uscode/text/26/168
LII / Legal Information Institute

4. IRC Section 611: Natural Resource Depletion

Section 611 provides deductions for the depletion of qualifying natural resources, including timber, mineral deposits, and certain other natural deposits.

Some agricultural tax discussions reference Section 611 when considering the potential depletion of purchased soil nutrients.

However, Section 611 does not expressly establish a general deduction for agricultural soil fertility. Applying it to purchased nutrients requires careful consideration of the underlying tax law and supporting documentation.

https://www.law.cornell.edu/uscode/text/26/611

5. IRC Section 179: Expensing Agricultural Assets

Section 179 allows qualifying taxpayers to elect to immediately expense certain depreciable business assets rather than recovering their costs through annual depreciation.

For farmland purchasers, eligible assets may include certain equipment and qualifying agricultural improvements.

Although Section 179 is frequently discussed alongside Section 180, it is a separate provision. Purchasing farmland does not automatically make the land or its existing soil fertility eligible for Section 179 expensing.

https://www.law.cornell.edu/uscode/text/26/179

What Do These Tax-Code Sections Have in Common?

Although these provisions differ, they share an important connection in agricultural tax planning: identifying qualifying expenditures or assets and determining their appropriate tax treatment.

For farmland purchasers, that process may involve evaluating existing soil fertility alongside other assets acquired with the property.

The applicable tax treatment depends on several factors, including the taxpayer’s farming activities, the nature of the assets, their documented value, and the relevant tax rules.

A soil fertility study establishes an agricultural valuation. It does not, by itself, establish eligibility under any particular tax-code section.

This distinction matters because a deduction claimed under Section 180 is not necessarily available under Sections 167, 168, or 611.

How Soil Tax Guys Helps Farmland Buyers

At Soil Tax Guys, we specialize in identifying, measuring, and documenting excess soil fertility associated with farmland acquisitions.

Our process is straightforward:

1. Soil testing: We conduct soil testing or evaluate qualifying soil-test results provided by the client.
2. Preliminary valuation: We provide a complimentary estimate of the potential soil fertility value based on actual soil-test results.
3. Official report: If the potential value warrants further investigation, we prepare a comprehensive soil fertility valuation report that the buyer and their tax professional can evaluate.

Our role is to provide the agronomic evidence and valuation necessary for informed tax planning. Your CPA determines which tax provisions apply, whether a deduction is available, and how it should be reported.

The Bottom Line

Section 180 remains the primary provision associated with fertilizer expensing and is central to many excess soil fertility deduction discussions.

Sections 167, 168, 179, and 611 address different depreciation, expensing, and depletion rules. They should not be treated as interchangeable elections or automatically grouped under Section 180.

Regardless of the applicable provision, accurate documentation and a defensible valuation are essential.

Purchasing farmland? Start with the soil.

Contact Soil Tax Guys to learn whether your newly acquired farmland may contain measurable excess soil fertility and request a complimentary preliminary valuation.

Disclaimer: Soil Tax Guys provides agronomic soil fertility valuation services. We do not provide legal or tax advice. All tax elections, eligibility determinations, and filing decisions should be reviewed with a qualified tax professional.

Alec Bean

Alec Bean is the CEO of Soil Tax Guys, he is a Certified Crop Advisor and has spent his entire career in Agronomic Consulting relating to soil fertility. He can be reached at [email protected] to discuss how Soil Fertility Tax Deductions fit into your land buying strategy.