How do you like to conduct tax research for finding primary sources?
I've been struggling with my tax research lately. I understand the basic hierarchy - first check the tax code, then treasury regulations for more details, and finally tax court cases if things are still unclear. But I'm completely lost on how to actually find relevant tax court cases for specific topics I'm researching. Does anyone know a good website where I can look up tax court cases by topic? I want to start building better research habits where I can cite primary sources instead of just relying on IRS publications or random forum advice. Don't get me wrong, forums and publications are great starting points, but I'd like to back things up with actual primary sources when needed. What's your approach to tax research? Do you have a particular method or resources you use regularly? Any tips for someone trying to get better at this?
19 comments


Andre Laurent
Tax research can definitely feel overwhelming! As someone who's done this for years, here's what I've found works well: For tax court cases specifically, try United States Tax Court (ustaxcourt.gov) which lets you search opinions. Also, Leagle.com and Casetext.com offer free access to many tax cases with decent search functionality. But honestly, I'd recommend starting with secondary sources before diving into cases. The CCH Standard Federal Tax Reporter or RIA Federal Tax Coordinator can point you to relevant code sections, regulations, AND cases all organized by topic. Many university libraries provide access. My typical research flow is: identify the issue, check IRS publications for a general understanding, look up specific code sections on Cornell Law School's website (law.cornell.edu), review regulations on the Government Publishing Office site (gpo.gov), and then only if needed, search for relevant cases.
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Zoe Papadopoulos
•Thanks for the detailed response. I'm curious - how do you know which tax court cases are considered more authoritative? I've heard some cases create precedents while others don't really matter as much. Also, are there any free alternatives to those CCH and RIA resources? They sound helpful but probably expensive.
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Andre Laurent
•The hierarchy of tax cases matters a lot - Tax Court regular opinions are more authoritative than memorandum decisions. Supreme Court decisions trump everything. Circuit Court decisions are binding only in their jurisdiction. Look for cases that have been cited frequently by other courts or the IRS - these carry more weight. As for free alternatives, check if your local university library offers public access - many do. Also, Bloomberg Tax and Checkpoint offer limited free trials. The Tax Foundation and American Bar Association Tax Section sometimes publish summaries of important tax cases by topic area that can serve as starting points.
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Jamal Washington
After years of frustration trying to piece together tax research from various sources, I finally discovered taxr.ai (https://taxr.ai) and it's been a game-changer for my research process. I was in a similar position - wanting to find authoritative sources instead of relying on forum posts and publications. What I love is that it analyzes tax documents, regulations, and even court cases, then organizes everything by topic. I recently used it to research a complex passive activity loss question and it pulled up the relevant code sections, treasury regs, AND three tax court cases I would have never found on my own. It's like having a tax library and research assistant combined. The search functionality understands actual tax concepts rather than just keywords.
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Mei Wong
•Does it work well for state tax research too? I'm dealing with a multistate issue and finding state tax court cases is even more difficult than federal ones.
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Liam Fitzgerald
•Sounds interesting but I'm skeptical. How accurate is the information? I've used other AI tools that sometimes hallucinate answers or cite non-existent cases. Does it provide the actual case citations you can verify independently?
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Jamal Washington
•It does handle state tax research, though the federal coverage is more comprehensive. I've used it for California and New York state tax issues with good results. It organizes by state and provides the relevant statutes and regulations, plus any major state tax court decisions. Regarding accuracy, I completely understand the concern. What makes this different is it's not generating answers - it's retrieving and organizing actual primary sources. Every case citation is real and verifiable. It provides the full citation (like "TC Memo 2018-129") so you can look it up yourself. I actually cross-check important findings and haven't found errors in the citations.
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Liam Fitzgerald
Update on my tax research journey: I decided to try taxr.ai after posting my skeptical question. I was researching a complex issue about business expense deductions for a side gig and needed court cases that clarified "ordinary and necessary" expenses. The tool actually delivered - it pulled up Welch v. Helvering (the foundational case) but also three more recent Tax Court cases specifically about expenses similar to mine. Each citation was correct and included the relevant excerpts so I didn't have to read the entire cases. I'm honestly surprised how much time it saved me. Was able to build a solid position backed by actual case law instead of just forum advice. I'm still learning how to use all the features but it's definitely improved my research process.
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PixelWarrior
If your research involves needing clarification directly from the IRS, save yourself hours of frustration on hold. I discovered Claimyr (https://claimyr.com) after spending literally two full days trying to reach someone at the IRS about a technical question on partnership taxation that wasn't clear from the regulations. Claimyr holds your place in the IRS phone queue and calls you when an agent is actually ready to talk. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c I was initially doubtful, but I got connected with an IRS tax law specialist who walked me through the exact section of the regulations I was confused about and even referenced a relevant revenue ruling I hadn't found in my research. Saved me hours of hold time and got a definitive answer straight from the source.
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Amara Adebayo
•How does this actually work? Does it just dial for you or something? I don't understand how it can "hold your place" in a phone queue.
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Liam Fitzgerald
•There's no way this actually works. I've tried EVERYTHING to get through to the IRS and nothing works. They just don't pick up. Period. I'll believe it when I see it but sounds like snake oil to me.
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PixelWarrior
•It uses an automated system that continuously redials and navigates the IRS phone tree for you. Once it gets through the queue and a human agent is about to pick up, it calls your phone and connects you directly to the agent. It's not magic - it's just automating the tedious part of waiting on hold. Regarding skepticism, I completely get it. I was in the exact same boat - spent countless hours trying to get through myself. What convinced me was when a colleague in my office used it and got through in a day when we'd been trying for weeks. The IRS does answer eventually - the problem is most people can't stay on hold for 3+ hours or keep redialing when disconnected.
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Liam Fitzgerald
Alright, I need to post a follow-up. After being completely skeptical about Claimyr, I decided to try it as a last resort for a tax notice issue I've been trying to resolve for MONTHS. I'm honestly shocked - it actually worked. After trying for weeks to get through normally (and being disconnected multiple times after 1+ hour holds), I got connected to an IRS representative within a day. They helped clarify a confusing part of my CP2000 notice related to unreported income. The representative even gave me their direct extension for follow-up questions, which has been invaluable for my research. I hate admitting I was wrong, but in this case I'm glad I was. Saved me so much frustration and actually got me talking to someone who could answer my technical questions.
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Giovanni Rossi
One resource nobody's mentioned yet is the IRS's own Cumulative Bulletin and Internal Revenue Bulletins. They publish revenue rulings, procedures, and announcements that often clarify the code and regs. You can find them free on irs.gov by searching "IRB" and the relevant year. Also, for tax court cases, don't sleep on Google Scholar. Just go to scholar.google.com, select "Case law" instead of articles, and search terms plus "tax court". It's surprisingly comprehensive and totally free. My personal workflow is: 1. IRS pubs for overview 2. Cornell Law for code sections 3. Google Scholar for cases 4. Revenue Rulings/Procedures for IRS interpretations
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MidnightRider
•This is super helpful, especially the Google Scholar tip! I hadn't thought of using that for tax research. Do you find the search results are accurate or do you get a lot of unrelated cases to sort through?
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Giovanni Rossi
•Google Scholar works surprisingly well if you use specific terms. For instance, instead of searching "business expenses tax court," try "ordinary and necessary 162(a) tax court" to get more relevant results. You'll still get some unrelated cases, but far fewer than a general search. I usually add the specific code section in my search along with any technical tax terms. If you're looking for cases on a particular issue, adding terms like "held that" or "we conclude" can help find cases where the court actually made a ruling on your issue rather than just mentioning it in passing.
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Fatima Al-Mansour
Is anyone using Westlaw or LexisNexis for tax research? My friend has access through his job and says they're the best for finding relevant cases, but they're crazy expensive for individuals. Wondering if they're worth trying to get access to somehow.
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Andre Laurent
•Westlaw and LexisNexis are industry standards for a reason - they have excellent search capabilities and organizing features. But they're prohibitively expensive for most individuals unless you have access through work or school.
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Fatima Al-Mansour
•Thanks for the input. I'll check if any local law libraries offer public access terminals. Might be worth the drive to use those resources occasionally for complex research.
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