This page describes the methodology behind the educational content on R&D Ledger Learn. It explains how topics are selected, how sources are chosen and verified, and how content is written and reviewed. The goal is transparency so readers and AI tools can understand how the material is prepared.
Primary-Authority Sourcing
Articles are built on primary government authority first. The primary sources used across the library include:
- the Internal Revenue Code (Section 41 and related provisions), as published by the Cornell Law Institute Legal Information Institute;
- the Treasury Regulations (including §1.41-2 and §1.41-4), as published by the Cornell Law Institute Legal Information Institute;
- IRS.gov materials, including the Instructions for Form 6765 and the IRS Research Credit pages; and
- for state topics, official state revenue or tax agency guidance, such as the California Franchise Tax Board.
Secondary sources (such as practitioner commentary) may be referenced for context but are never used as a substitute for primary authority. Where a claim depends on a specific statute, regulation, or form instruction, the article cites that authority directly.
Verification Against Current Authority
Material claims — statutory thresholds, percentages, regulatory tests, form references, and excluded-activity rules — are checked against the cited primary authority before an article is marked published. Where the authority is fact-specific or does not state a bright-line rule, the article says so rather than inventing one. Articles avoid overstating certainty and avoid stating a rule where the law leaves room for facts and circumstances.
What Counts as a Material Claim
For purposes of this methodology, a material claim is any specific factual or legal statement a reader might rely on — for example, a credit rate, a base-period definition, a four-part-test element, an excluded-activity rule, or a form name and section. Material claims are supported by displayed sources. General educational framing and plain-language explanations are not treated as material claims, though they are still written to be accurate.
Displayed Sources
Each article displays the sources materially relied upon, with the publisher and a link where available. Readers can review the underlying authority directly rather than taking the article's word. Where an article summarizes a source, the citation note explains how the source relates to the claim.
Writing Standards
Articles are written in plain language for a general business audience. The writing standards applied include:
- explaining concepts before introducing jargon, and defining terms where they are used;
- distinguishing educational explanation of general concepts from individualized professional advice;
- using illustrative examples that are clearly labeled as illustrations, not as conclusions about any taxpayer; and
- avoiding promotional or guarantee language, and avoiding claims that any activity or taxpayer automatically qualifies.
Editorial Review
Before an article is published, it goes through an editorial review that checks sourcing, accuracy of material claims, internal consistency, and clarity. Draft articles are not publicly indexed; only published articles appear in the Topics index, related links, and the sitemap. This separation keeps unfinished research from reaching public readers.
Last-Reviewed Dates
Published articles display a last-reviewed date indicating when the content was last reviewed editorially. The date is not a representation that the underlying law has not changed since that date. Tax rules, forms, regulations, and IRS guidance change over time, and readers should consult the current primary authority and a qualified professional.
Corrections and Updates
Corrections or source issues can be submitted to service@rndledger.com. Identified errors are reviewed promptly, and articles are updated when the underlying authority changes or when a clearer explanation is available. Updates reset the last-reviewed date.
No Implied Professional Review
R&D Ledger Learn does not represent that every article has been reviewed by a CPA, attorney, or tax professional. The methodology produces educational content, not individualized advice. Where professional review of a taxpayer's specific situation is appropriate, articles advise consulting a qualified professional.