The fertility in your soil is a tax deduction waiting to be claimed.

When farmland changes hands, the soil often holds phosphorus, potassium, and lime that the previous operator applied and the crops did not use up. Where that excess can be measured on your parcel and tied to the prior operator’s program, its value may be recoverable as the nutrients are consumed.

Whether a buyer may do this is genuinely unsettled. IRC §180 by its terms addresses a farmer’s own purchase and application of fertilizer; extending it to a buyer recovering what a previous operator paid for rests on analogy rather than on authority squarely on point. The only IRS document directly on the question denied the deduction on the facts presented there.

That is why the substantiation file — not the dollar figure — is the product.

The amount of fertility depends on the soil at acquisition, how much the prior owner fertilized, how much is left in fertility, and compared to critical baseline for the field. We have seen a range from $600 – $2,000 of residual fertility per acre.

Residual fertility depends on what the prior operator applied, what the intervening crops removed, your soil’s measured levels, and fertilizer prices at the time you acquired the land. A per-acre average taken across other people’s farms tells you nothing reliable about yours, and measured values on real parcels are routinely well below the figures circulating in this market.

Your number comes from your soil, or it does not exist.

The approach we support is recovering it as the nutrients are consumed, across the seasons in which the crops actually draw the excess down. That is a schedule your CPA can carry to the amortization schedule.

A full first-year deduction is a more aggressive election your CPA could make. It is entirely their decision, not our recommendation, and we do not build our work around it.

See “What does the recovery schedule look like?” below.

Front-loaded, and largely complete within about five years, but can be as long as 10 years.

On a representative corn–soybean rotation, modeled from published crop-removal rates, residual value recovers roughly like this:

Roughly a third in the first year, about 60% within two years, and substantially all of it within five.

The shape comes from how fast crops actually draw each nutrient down. Phosphorus clears quickly — usually within two seasons. Potassium takes longer because there is typically far more of it above the threshold relative to what a crop removes each year. Lime declines over about four years.

One consequence worth understanding: a larger measured excess does not produce a larger first-year deduction. It can produce a longer recovery period.

Illustrative pattern modeled from published crop-removal benchmarks for a representative rotation. It is not a determination about any parcel. Your schedule comes from your measured nutrient levels and your documented cropping history.

The position is available to an owner engaged in the business of farming — you farm the ground yourself, or you share in the crop rather than collecting a fixed cash rent.

A cash-rent landlord who does not materially participate generally does not qualify, and we will tell you that rather than take the engagement. We also do not take engagements on land you farmed or rented in the year before you bought it, on ground that was never previously farmed, or on inherited land.

This is a screen, not a formality. We will tell you when a parcel does not support a position worth pursuing.

Yes, and it has to be done properly. A credible position rests on measured data from your parcel — not on estimates, and not on regional averages.

Four things determine whether a measurement can be checked by anyone else: the extraction method used, the sampling depth, the published source of the critical value it is compared against, and the date of the fertilizer pricing. If a report does not state all four, its number cannot be independently verified. A number that cannot be verified is hard to defend.

Typically, most crop land will already have the necessary soil tests. If soil tests are not available for the qualifying fields, then we will arrange/quote a qualified soil test accompanied with the AcreBasis residual fertility study.

They matter more than almost anything else, and this is the question to ask before you spend money on sampling.

Measurement establishes that a nutrient is present. It does not establish where it came from. Where the prior operator’s fertilizer invoices exist, we can reconcile them against what the intervening crops removed and show how much of the measured excess is actually linked to a documented application. That linked portion is the strongest part of any file.

Without those records, the linked portion is essentially zero and the entire position rests on measurement alone. Row-crop operations usually have the invoices. Ranch and pasture operations usually do not.

Depends, a prior-year acquisition is generally addressed as an accounting-method change on Form 3115, filing under a 481(a) change in accounting method from a impermissible method to a permissible method allows an automatic change in accounting method (does not require prior approval from the IRS to file the Form 3115).

Reconstructing what the soil held on a past acquisition date is materially harder than measuring it at the time, and the further back you go the thinner the reconstruction gets. We will tell you when it is too thin to support a position.

Our fee is quoted per acre of about $40 per acre for the valuation and report and is itself a deductible business expense.

You receive the measurement file: all sample results and locations, the extraction method and sampling depth, the named threshold source, the reconciliation against the prior operator’s application records where those exist, acquisition-period pricing from a dated public index, and a per-nutrient recovery schedule. Your CPA receives the complete file and makes every filing decision. We do not prepare or file returns.

We cannot tell you it will not, and we would not trust anyone who did.

What we can do is make sure that if the return is examined, the file shows the work — measured values from your parcel, a named and published threshold, the documentary link where it exists, and a recovery schedule. What draws scrutiny in this area is the opposite: a per-acre figure quoted before anyone sampled the soil.

Any significant deduction can draw scrutiny, so the quality of the underlying work matters. A defensible claim rests on comprehensive soil sampling (using all samples, never cherry-picking the highest ones), correct laboratory methods, documented historical pricing, and a clear link to the land’s fertility at the time you acquired it. Well-substantiated claims are built specifically to hold up under review.