Farm R&D Tax Credit Documentation for Field Trials, Feed Trials and On-Farm Experiments

What Should Farm R&D Records Prove?

What was the farm trying to improve?

Identify the crop process, feeding method, irrigation system, formulation, equipment setup, storage method, or other business component.

What technical uncertainty existed?

Document what the farm did not know at the start, such as which method, formulation, setting, or design would achieve the desired result.

What alternatives were tested?

Show the different approaches, trial conditions, adjustments, or iterations evaluated.

What happened as a result?

Record measurements, failures, observations, changes, and conclusions.

Build an Evidence File Around the Type of Trial

Field and Crop Trials

A field trial file may include:

• Test-plot maps or field locations
• Planting dates and methods
• Seed or input variations
• Irrigation or nutrient changes
• Weather or environmental conditions
• Yield, quality, or performance measurements
• Notes explaining why treatments changed
• Results from failed as well as successful trials

The strongest records show the progression of the experiment, not just the final yield number.

Feed and Livestock Trials

Feed trials may produce:

• Formulation versions
• Ingredient changes
• Feeding schedules
• Animal-group identification
• Weight, intake, health, or performance measurements
• Environmental-control records
• Trial dates
• Technical observations and conclusions



Routine feeding records by themselves do not establish qualified research. The documentation should show the technical question being tested and how alternatives were evaluated.

Feed and Livestock Trials

For irrigation, greenhouse, or growing-system projects, useful evidence may include:

• Flow or pressure readings
• Control settings
• Water-use measurements
• System layouts
• Temperature or humidity data
• Equipment modifications
• Trial logs
• Comparison results



These records can help show how the farm tested a method rather than simply installing commercially available equipment.

Contemporaneous Records Are Stronger Than Reconstructed Memories

A farm does not need a formal laboratory notebook, but records created during the project are generally more useful than trying to recreate an experiment months later.

The IRS Research Credit Audit Techniques Guide states that contemporaneous books and records should form the basis of substantiation and cautions that estimates are not a substitute when actual supporting records are available.

That means a simple dated field log can be more useful than a polished summary written long after the project ends.

Useful contemporaneous evidence can include:



Daily notes

What was changed, tested, or observed.

Photos

Equipment modifications, test plots, failures, or trial conditions.

Spreadsheets

Measurements, trial comparisons, or production data.

Emails and meeting notes

Technical decisions and reasons for changing direction.

Version histories

Changes to formulations, equipment designs, or procedures.

Connect Farm Expenses to the Experiment

Documentation should also establish the link between the project and the expenses claimed.

Current Form 6765 reporting focuses on qualified research expenses such as wages, supplies, and contract research, and beginning with tax years after 2025, Section G places greater emphasis on business-component-level reporting for many filers.

For a farm, that can mean maintaining:

A general annual farm expense total is less useful than records showing which costs relate to which research project.

Avoid Mixing Routine Farming With Experimental Work

Agricultural records often contain both qualified and routine activity.

For example, a crop log may include standard planting work alongside a test plot. A livestock employee may spend part of the week conducting a feed trial and the rest on ordinary animal care.

The documentation should make that distinction visible.

This helps avoid treating:

• Entire employee roles as research
• All farm supplies as experimental supplies
• Routine production as field testing
• Standard maintenance as equipment development



The IRS emphasizes that research expenses need a supportable connection to qualified research activities or business components.

A Simple Farm R&D Recordkeeping Routine

Farm documentation does not need to become complicated.

For each experiment, maintain one project file containing:

1. Project objective
2. Technical uncertainty
3. Alternatives tested
4. Dates and people involved
5. Trial records and measurements
6. Changes made during testing
7. Results or conclusions
8. Related wages, supplies, and contractor costs

That structure creates a clearer record than collecting unrelated receipts and notes at year-end.

Farm R&D Documentation FAQs

Build the Record While the Experiment Is Happening

The strongest farm R&D tax credit documentation is created alongside the research, not reconstructed after the tax year closes.

Field trials, feed trials, crop experiments, irrigation tests, and other on-farm projects should be documented in a way that connects the technical question, experimentation, people, costs, and results.

RCG Tax Partners supports agricultural businesses with R&D Tax Credit studies, technical activity analysis, qualified expense review, and detailed supporting documentation.