Section 180 can work in Douglas County, Illinois
Short Answer
Yes. A recent Illinois farmland purchase of 368 Acres in Douglas County resulted in an estimated $935,530.40 Section 180 soil fertility deduction, demonstrating how valuable excess soil fertility can be when it is properly identified, measured, and documented after purchasing agricultural land.
In this case, the property contained an estimated $2,536.00 per acre of existing soil fertility value. Because these nutrients existed in the soil at the time of purchase, they represented a potential Section 180 deduction rather than future fertilizer expenses.
Illinois Section 180 Case Study
- Location: Douglas County, Illinois
- Property Type: Row Crop Farm
- Soil Fertility Value: $935,530.40
- Value Per Acre: $2,536.00
Client name has been omitted for privacy.
Douglas County is home to some of Illinois’ most productive farmland. Decades of intensive corn and soybean production often result in significant residual soil fertility, particularly where previous owners have invested heavily in phosphorus, potassium, lime, and other nutrients.
For farmland buyers, those existing nutrients may represent a substantial tax planning opportunity under Internal Revenue Code Section 180.
Why Soil Testing Matters
The value of a Section 180 deduction begins with measuring what is already in the soil.
Following the land purchase, soil samples were collected to evaluate existing nutrient levels before any new fertilizer applications were made. Those laboratory results allowed Soil Tax Guys to calculate the replacement cost of the nutrients present in the soil at the time ownership transferred.
Without soil testing, there is no reliable way to determine the amount of existing fertility that may qualify for a Section 180 deduction.
Understanding the Opportunity
Many farmland buyers focus exclusively on the purchase price of the property while overlooking one of its most valuable assets the nutrients already present in the soil.
Previous owners often spend years building soil fertility through fertilizer applications and sound agronomic management. When ownership changes, that fertility transfers with the land.
Rather than treating those nutrients as part of the non-depreciable land value, Section 180 may allow qualifying taxpayers to deduct the value of excess soil fertility, subject to the advice of their tax professional and the specific facts of the transaction.
Douglas County, Illinois Soil Fertility
Douglas County contains highly productive prairie soils capable of supporting excellent corn and soybean yields. Because of the area’s intensive crop production, many farms have accumulated significant residual fertility over time.
Every property is different, however. Fertility levels depend on factors including:
- Historical fertilizer management
- Crop rotation
- Soil type
- Soil test history
- Previous ownership practices
That is why every farm should be evaluated individually rather than relying on county averages or assumptions.
Estimated Tax Benefit
For this Illinois farmland purchase, the estimated excess soil fertility value totaled:
- Section 180 Value: $935,530.40
- Value Per Acre: $2,536.00
Many buyers elect to claim the deduction in the year of purchase, while others work with their CPA to spread the deduction over several tax years depending on their income, tax planning objectives, and overall financial strategy.
Why Illinois Farmland Buyers Should Consider Section 180
Illinois consistently ranks among the nation’s premier agricultural states, with farmland values reflecting decades of investment in productivity.
When purchasing farmland in counties such as Douglas County, buyers should consider whether existing soil fertility represents an overlooked tax opportunity.
Completing soil testing shortly after closing provides the data needed to evaluate the property’s existing nutrient value before additional fertilizer is applied.
For many buyers, the cost of the evaluation is small compared to the potential tax savings that may be available.
Frequently Asked Questions
Does Section 180 apply in Illinois?
Yes. Section 180 is a federal tax provision and may apply to qualifying Illinois farmland purchases, subject to the taxpayer’s specific circumstances and guidance from their tax advisor.
Do I need a soil test?
Yes. Measuring existing nutrient levels through soil testing is a critical step in documenting excess soil fertility.
Can I provide my own soil tests?
Yes. Soil Tax Guys can often evaluate client-provided soil test results if they meet the necessary standards and were collected at the appropriate time.
Can deductions be spread over multiple years?
Yes. While some taxpayers elect to claim the entire deduction immediately, many work with their CPA to allocate the deduction over several years as part of a broader tax strategy.
Does every Illinois farm qualify?
No. Every property is unique. The only way to estimate potential value is through soil testing and a professional evaluation.
Get a Free Section 180 Estimate
If you’re purchasing farmland in Illinois, Soil Tax Guys can help estimate the potential value of your Section 180 soil fertility deduction.
The process is simple:
- Complete soil testing after closing, or provide your existing soil test results.
- Receive a free estimate of the property’s potential soil fertility value.
- If meaningful value exists, Soil Tax Guys can prepare a comprehensive Section 180 report for you and your CPA.
Knowing the value of the nutrients already present in your farmland could make a significant difference in your overall investment return.

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