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Residual Fertility Tax Deductions:
What You Need To Know To Make A Confident Decision

The IRS has long recognized that soil fertility is part of the value of farmland. When you purchase land, you aren’t just buying acres—you’re also buying the nutrients in the soil. That fertility has always been considered part of the land’s value and is reflected in the sale price you paid. For growers who purchased land within the last 15 years, the excess fertility present at the time of purchase or inheritance can be documented and treated as a legitimate tax deduction. 

If it’s not new, why have I never heard of “Section 180”

Despite being recognized for decades, this deduction is rarely discussed. Many growers, and even some accountants, aren’t aware of it because:

  • The tax code is complex, and fertility sits at the intersection of agronomy and finance.
  • The deduction requires accurate, soil-based documentation to support it.
  • Few growers have had access to the detailed soil data needed to calculate fertility value correctly.
  • Accountants typically don’t have agronomic information, so it’s easier to skip the deduction entirely.
Why It’s Not “Too Good to Be True”
Many growers are surprised by the amount of the deduction, but the explanation is grounded, straightforward, and supported by decades of IRS guidance.

The IRS acknowledged soil fertility as a land asset over 60 years ago.

It’s part of longstanding tax guidance, not a loophole or new idea. Always consult a tax professional about your situation.

The IRS requires defensible, scientific proof, not guesswork.

A 1990s ruling spelled it out clearly: fertility can be deducted when it’s documented at the nutrient level.

The valuations are high because fertility was in your purchase price.

You didn’t just buy acres, you bought nutrients. The deduction reflects what was in your soil the day you purchased it.

This isn’t a loophole. It’s accounting for what you already own.

The deduction doesn’t add or inflate anything, it simply calculates the fertility you purchased but haven’t yet documented.

Common Questions About Residual Fertility Tax Deductions

You’re not alone. These are the questions we hear from growers who manage their operation like a business, and want deductions to be done right.
Why are so many growers asking about residual fertility value now?
Because today’s soil data finally makes it possible to document fertility accurately. The deduction isn’t new, but growers now have access to the level of agronomic detail the IRS expects.
Most growers haven’t, not because it’s obscure, but because it requires agronomy and tax knowledge working together. Historically, very few groups connected the two well enough to make it practical.
We don’t estimate fertility value; we calculate it. Our approach uses point-level soil data, nutrient-specific critical levels, and over a decade of verified pricing history. This is the depth of documentation the IRS expects.

Every value is tied to:

  • The soil sample at that location
  • The nutrient levels present
  • The critical level for that soil
  • The cost of the nutrient itself (not the product).

There’s no guessing or averaging.

It means the valuation can be traced, audited, and explained point-by-point. Our documentation shows the baseline, the excess fertility, the nutrient price, and how the calculation was made, with no black boxes.

RFV takes complex agronomy and tax requirements and turns them into clean, traceable, accountant-ready documentation. Growers don’t have to guess what’s needed, we guide the process.

No. The IRS doesn’t audit more often just because someone claims a fertility deduction. What they expect is clear documentation. RFV is built to meet that standard, every value can be traced back to soil data, critical levels, and nutrient pricing. It’s one of the few approaches designed to be fully audit-defensible.

Many growers do, and RFV works alongside those deductions. What matters is that each deduction is legitimate and well-documented. RFV provides some of the strongest documentation available, which is why growers who already take significant deductions often feel more confident adding this one.

How RFV Fits In To Your Tax Strategy

Residual Fertility Valuation (RFV) is Advanced Agrilytics’ way of helping growers document the fertility they already own — accurately, transparently, and in a format accountants can use.

The RFV Report provides:

  • Sample-by-sample fertility calculations
  • Agronomic critical levels specific to each sampling location
  • Element-level pricing backed by historical data
  • Fully traceable documentation designed to support IRS expectations
  • A clear, guided process so growers know exactly what’s needed

Our RFV Report simply documents the value of the excess fertility that was already in your soil, using science and data instead of estimates.

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Resources Trusted by Growers Across the Midwest

You’re not the only one digging into how “Section 180” works. Whether you’re brand new to the idea or ready to understand the science behind the numbers, these two recorded webinars are the best place to start.

Unlock potential tax deductions averaging $1,200/acre with a defensible, agronomically sound Residual Fertility Valuation backed…
Accurate and dependable residual fertility valuation should always be the game plan.…

Ready to take the next step?

Do you have questions about Section 180 tax deductions? Learn how Advanced Agrilytics’ Residual Fertility Valuation program can help you claim this valuable tax deduction by providing the industry’s most defensible fertility valuation reports.