The IRS Section 180 deduction lets a taxpayer engaged in the business of farming write off the cost of fertilizer, lime, and other soil-conditioning materials in the year paid or incurred, rather than capitalizing those costs and recovering them slowly over the life of the improvement.1Office of the Law Revision Counsel. 26 USC 180 – Expenditures by Farmers for Fertilizer, Etc. The election is made year by year, has no cap tied to gross income, and covers both the materials and the cost of applying them.
Who Qualifies
Section 180 is available only to a taxpayer engaged in the business of farming.1Office of the Law Revision Counsel. 26 USC 180 – Expenditures by Farmers for Fertilizer, Etc. Individuals, partnerships, S corporations, and C corporations that operate farms for profit all qualify. Cultivating crops, raising livestock, or running an orchard puts you inside the provision.
Landlords are a mixed case. A crop-share landlord is generally treated as engaged in farming and can use Section 180. A landlord who collects fixed cash rent typically cannot, unless they materially participate in the farming operation. Purely passive cash-rent arrangements fall outside.
What Costs Qualify
The deduction covers money spent to buy or apply fertilizer, lime, ground limestone, marl, or similar materials that enrich, neutralize, or condition farmland.2eCFR. 26 CFR 1.180-1 – Expenditures by Farmers for Fertilizer, Etc. Application costs count too. If you hire someone to haul and spread agricultural lime, both the lime and the spreading fee are deductible.
The expense must be one that would otherwise have to be capitalized, meaning its benefits last substantially more than one year.3Internal Revenue Service. Publication 225 – Farmer’s Tax Guide A heavy initial lime application meant to shift a field’s pH over several seasons is the classic case. Routine annual fertilizer used up within one growing season is already deductible as an ordinary business expense; you don’t need the Section 180 election for it.
What Doesn’t Count
Section 180 is for materials that go into the soil, not structures built on it. Drainage tiles, irrigation systems, and retaining walls are capital improvements recovered through depreciation.
Costs to prepare land for farming for the first time are also excluded. If you clear timber or grade raw ground that has never been used for crops or livestock, those expenses fall outside Section 180 even if you add soil amendments at the same time.4eCFR. 26 CFR 1.180-1 – Expenditures by Farmers for Fertilizer, Etc. The regulation requires the land to have been used before, or simultaneously, for producing crops or sustaining livestock.
How to Make the Election
You elect Section 180 simply by claiming the deduction on the return for the year you paid or incurred the expense. The return itself serves as the election.1Office of the Law Revision Counsel. 26 USC 180 – Expenditures by Farmers for Fertilizer, Etc. No separate form or statement is required.
The election is effective only for the taxable year in which you claim the deduction.5eCFR. 26 CFR 1.180-2 – Time and Manner of Making Election and Revocation It does not lock you in for future years. You can expense qualifying costs one year and capitalize them the next. Each year stands on its own. Once you elect for a specific year, though, you can’t revoke it for that year without IRS consent.
The election must be made by the due date of the return, including extensions.1Office of the Law Revision Counsel. 26 USC 180 – Expenditures by Farmers for Fertilizer, Etc. If you missed it, you may still be able to make the election on an amended return within the three-year refund window, subject to IRS discretion.
The form depends on your entity. Sole proprietors report the deduction on Schedule F. Partnerships file Form 1065 and pass the deduction through. S corporations use Form 1120-S; C corporations use Form 1120. In each case the deduction appears as a farm expense on the applicable return.
The Prepaid Farm Supplies Cap
Cash-method farmers who stock up on fertilizer or lime before they need it should watch the prepaid farm supplies rule. If the cost of supplies you’ve purchased but haven’t yet used exceeds 50% of your other deductible farm expenses for the year, you can only deduct the portion actually used that year.3Internal Revenue Service. Publication 225 – Farmer’s Tax Guide The rest waits until the year you apply it. This catches farmers who try to pull several years of lime purchases into a single tax year for a bigger deduction.
Recapture When You Sell the Land
The main long-term trade-off is Section 1252 recapture. If you deducted soil-conditioning costs and then sell the farmland within a set window, part of those prior deductions gets taxed back as ordinary income instead of at the capital gains rate.
The amount subject to recapture is the lesser of the gain on the sale or the total Section 180 deductions taken on that parcel.6Office of the Law Revision Counsel. 26 USC 1252 – Gain From Disposition of Farm Land The recapture percentage steps down with the holding period:
- Five years or less: 100% recapture
- Sixth year: 80%
- Seventh year: 60%
- Eighth year: 40%
- Ninth year: 20%
- Ten years or more: 0%
If you bought a farm, deducted $50,000 in lime and soil amendments right away, and sold four years later at a $70,000 gain, the full $50,000 would be taxed as ordinary income. Two more years of holding would cut that to $40,000. After ten years, the recapture disappears.6Office of the Law Revision Counsel. 26 USC 1252 – Gain From Disposition of Farm Land Any recapture is reported on Form 4797 in the year of the sale.
The sliding scale means Section 180 delivers the most value to farmers holding land for the long term. If a sale is likely within a few years, the upfront deduction may not be worth the ordinary income hit later.
Section 180 Compared With Section 175
Section 175 covers soil and water conservation expenditures, and farmers sometimes confuse the two. Section 180 is for materials that condition the soil itself, like lime and fertilizer. Section 175 covers physical conservation work: terracing, contour farming, earthen dams, water diversion channels, and similar erosion-control measures.
The practical difference is the cap. Section 175 limits your annual deduction to 25% of gross farm income, with excess carried forward.7eCFR. 26 CFR 1.175-5 – Percentage Limitation and Carryover Section 180 has no income-based cap. Spend $200,000 on lime in a year when gross farm income is $100,000, and the full amount is deductible under Section 180 (subject to the excess business loss rules below). Under Section 175, only $25,000 of that same spending would come off that year.
Both provisions feed into the same Section 1252 recapture calculation on sale. The recapture percentage applies to deductions taken under both sections combined.
Residual Fertility on Purchased Farmland
A more aggressive use of Section 180 involves the fertilizer already in the soil when you buy farmland. If the prior owner applied significant fertilizer that hasn’t been fully depleted, the theory is that part of your purchase price represents that unexhausted fertility, and you can deduct it under Section 180.
The approach is legally possible but demands serious documentation. You need to establish that residual fertility actually exists in the soil, that it’s attributable to the prior owner’s applications, and that it’s declining over time. Soil testing is essential, and generic area-wide fertility data won’t work; the analysis has to be specific to the parcels purchased. Working with the seller to document fertilization history and allocating part of the purchase price to residual fertility in the sales contract strengthens your position.
The IRS scrutinizes these deductions closely. A 1991 Technical Advice Memorandum acknowledged the concept but denied the specific claim because the taxpayer’s soil test data didn’t isolate how much fertility came from the prior owner’s fertilizer rather than natural soil characteristics. If you pursue the deduction, the burden of proof will sit squarely on you.
Excess Business Loss Limitation
A large Section 180 deduction can push a farm into a net loss for the year. Under Section 461(l), non-corporate taxpayers face a ceiling on how much of that loss can offset non-business income. For 2026, business losses over $256,000 for single filers or $512,000 for joint filers can’t offset non-business income in the current year.8Internal Revenue Service. Excess Business Losses The disallowed amount carries forward as a net operating loss.
Routine soil amendments won’t trigger this. Large-scale liming across thousands of acres or a substantial residual fertility deduction on newly purchased farmland can. If a loss above these thresholds is likely, time the expenditures accordingly.
Records to Keep
No separate statement is required with the election, but your records need to back every dollar deducted. Keep receipts and invoices showing the materials purchased, the cost of application, and which specific parcels were treated. Soil tests from before and after the application help show the expense was genuinely for conditioning rather than routine maintenance.
Track deductions by parcel. When you sell, the Section 1252 recapture calculation requires knowing exactly how much you deducted on that parcel and when you acquired it. Farmers who deduct aggressively and later sell without those records often can’t prove a favorable holding period or dispute the IRS’s recapture math.