Soil and Water Conservation Deductions (IRC §175) Explained

Drainage tile, terraces, water lines, contour furrows. Under the general rules, these land improvements get capitalized and depreciated slowly, sometimes over the life of the land itself. For farmers, Section 175 of the Internal Revenue Code changes that math. It lets qualifying operations deduct many of these costs in the year they are paid, subject to an annual cap.

Most Idaho and Utah farms qualify. Very few actually use the deduction to its full effect, usually because they do not realize what falls under it or because the cap and recapture rules go unaddressed.

Here is what §175 does, who qualifies, and how the 25% cap actually works.

What §175 actually does

Section 175 converts what would otherwise be capitalized land improvement costs into current-year deductions on the farm’s Schedule F. Instead of depreciating a $40,000 tile project over decades, a qualifying farmer can deduct the cost the year it is placed in service.

The deduction is subject to an annual cap of 25% of gross farm income. Any expense above that cap does not disappear. It carries forward and can be deducted in later years, subject to the same 25% test each year.

The election is authoritative. Once you elect §175 for a farm, it applies to all qualifying expenses on that farm going forward unless you receive IRS consent to change.

Who qualifies

Three requirements have to line up.

• Engaged in the business of farming. The farmer must be actively in the farming business, not simply owning farmland. Custom operators, share-croppers with material participation, and cash-rent landlords who materially participate can qualify. A pure cash-rent landlord with no operating role generally cannot.
• The land test. The land must be used in farming, by you or by a tenant of yours. Idle land that has never been farmed does not qualify. Land that is currently in production, or that was in production previously and is being improved for continued production, does qualify.
• Conservation consistency. The expenses must be consistent with a conservation plan approved by the USDA Natural Resources Conservation Service (NRCS) or a comparable soil conservation authority. In the absence of an approved plan, the deduction is not available.

The NRCS-consistency requirement is the piece farmers most often miss. In Idaho and Utah, local NRCS offices coordinate the plans, and existing farm conservation plans generally cover the qualifying work.

Qualifying expenses

Section 175 covers a specific set of land-improvement expenses. The most common qualifying items:

1. Earth-moving for terraces, contour furrows, diversion channels, and check dams 2. Drainage tile installation and repair 3. Water lines, irrigation ditches, and canals used in production 4. Leveling, grading, and land shaping for erosion control 5. Brush and weed eradication where the land is being brought into productive use 6. Planting windbreaks and shelterbelts 7. Water conservation and impoundment structures

The plain-English test is whether the expense is a soil-and-water conservation improvement to farmland already in use. If yes, and if it is consistent with an NRCS plan, it is generally deductible.

What does not qualify

The exclusions matter as much as the inclusions.

• Buildings and permanent structures. A barn, a shop, or a bin qualifies for depreciation, not §175.
• Equipment. A center pivot is equipment, not a land improvement. It is capitalized and depreciated like any other farm asset. The ditch that feeds it can qualify. The pivot itself cannot.
• Draining wetlands. Since 1985, expenses to drain or convert wetland are generally not deductible under §175.
• First-use land clearing. Clearing brush from land that has never been farmed, to make it productive, is a capital investment in land, not a conservation expense.

These lines are important. Treating a pivot or a shop as a §175 expense creates real audit exposure.

How the 25% cap works

The annual limit is 25% of gross farm income for the year. Gross farm income means the total farm receipts before deductions, not net profit. On a diversified Idaho operation with $800,000 of gross farm income, the ceiling is $200,000 for the year.

Two mechanics worth understanding.

Carryforward. Expenses above the 25% cap in a given year carry forward to future years, subject to the same annual test. A farm that installs $300,000 of tile in one year against $600,000 of gross income can deduct $150,000 that year and carry $150,000 forward.

Recapture on sale. If farmland is sold within nine years of the deduction being taken, some or all of the §175 deduction can be recaptured as ordinary income. The recapture percentage decreases the longer the land is held. A farm sale planned within a decade of major conservation work needs this run in advance.

Concrete examples

Tile drainage on Bingham County potato ground, irrigation-ditch reconstruction on a Twin Falls hay operation, terracing on rolling Utah cropland. All routine §175 territory. The deduction is often the difference between a project that pencils and one that does not.

This overview is general information, not tax advice for your specific operation. Talk with Cooper Norman’s agriculture accounting group about qualifying an upcoming conservation project, and how the deduction coordinates with your broader farm tax planning services. Talk to a Cooper Norman ag CPA before the earthwork starts, not after.