How to Find Case Law: Free and Paid Ways to Find Cases

To find case law, you can search by citation when you already know the case, or by topic and plain-English question when you do not, using free sources like Google Scholar and CourtListener or paid platforms like Westlaw and LexisNexis. The right method depends on what you already know and how much depth and verification you need.

Finding a case used to require a law library and a set of printed digests. Today, a lot of American case law is a search box away. The challenge has shifted from access to knowing where to look, how to phrase a search, and how to confirm what you find is real and still good law.

How to find case law when you already have a citation

If you have a citation, finding the case is the easy part. A citation like a volume, a reporter abbreviation, a page, and a year is a direct address to a specific opinion. Paste the citation into a free search engine like Google Scholar, into CourtListener, or into a paid platform, and you should land on the opinion.

If the citation does not resolve, be suspicious. A citation that leads nowhere may be mis-typed, or it may not correspond to a real case at all. That second possibility has become more common in the age of AI-generated text, which we cover in AI hallucination in legal cases. Either way, if you cannot verify the case at its source, do not rely on it. Our guide on how to read a case citation explains how to decode the address in the first place.

How to find case law by topic

Most research starts without a citation. You have a legal question and need to find the cases that answer it. There are three broad approaches.

Keyword and boolean search

Traditional platforms let you build searches with keywords and connectors: specific terms, "and," "or," proximity operators, and field restrictions like jurisdiction or date. Boolean search is powerful and precise once you master it, but it has a learning curve, and a poorly built query either buries you in results or misses the case you needed.

Topic and digest search

Editorial systems organize case law into topics. West's Key Number System, for example, assigns every point of law a topic and number, so once you find one relevant point you can pull every case classified under the same number. This is a reliable way to find related authority, and it is one of the traditional strengths of the large paid platforms.

Plain-English and natural-language search

The newest approach lets you type the question the way you would ask a colleague, such as "can an employer enforce a non-compete after a layoff," and returns relevant precedents. This is the approach behind plain-English case search in Cases: no connectors to memorize, and each result comes with a summary, the holding, and a citation you can check. It lowers the barrier for paralegals, students, and self-represented litigants who have not spent years learning boolean syntax. If you are handling a matter without a lawyer, our guide to pro se legal research starts from that assumption.

Free ways to find case law

You do not need an expensive subscription to start. Several strong free resources exist:

• Google Scholar has a large collection of state and federal opinions. Switch to case law mode, search by keyword or citation, and filter by court. It even shows how later cases have cited a decision, which is a rough signal of importance.
• CourtListener, run by a nonprofit, offers millions of opinions, a citator-style tool, and oral argument audio. It is a genuine research resource, not just a lookup tool.
• Government and court websites publish recent opinions directly. The Supreme Court and many appellate courts post decisions the day they are issued.
• Public records and case dockets can be found through court systems, though coverage and cost vary.

Free tools are excellent for finding and reading opinions. Their limits tend to be depth of historical coverage, editorial headnotes, and a full commercial citator for good-law checks. If you rely on free tools, be extra disciplined about verifying that a case is still good law, which we explain in how to Shepardize a case. Our page on free legal research compares each no-cost option and shows exactly where the free tier runs out.

Paid platforms and where they earn their price

The large paid platforms, Westlaw and LexisNexis, remain the deepest tools, with broad coverage, editorial headnotes, and mature citators (KeyCite and Shepard's). Bloomberg Law is a strong third option, especially for business and regulatory work. Their tradeoff is cost and complexity: seat pricing is typically quoted rather than published, and it climbs quickly for solos and small firms. We compare the two leaders in Westlaw vs LexisNexis, and survey the wider field in best legal research software.

A practical workflow for finding case law

1. Pin down the issue and jurisdiction. Which court's law governs? Federal or state? Which state? This decides which cases even matter.
2. Run a broad search first. Start with a plain-English question or a broad keyword search to see the landscape, then narrow.
3. Read the headnote and holding. Skim the editorial summary to decide if a case is on point, then read the court's actual holding to confirm.
4. Expand from a good case. Follow the cases it cites and the cases that cite it, or use a topic classification to find siblings.
5. Filter for authority. Prefer binding decisions from your jurisdiction over persuasive ones from elsewhere.
6. Verify good law. Run a citator or good-law check before relying on any case.

For a deeper treatment of steps two through six, see how to research case law.

Finding case law for a specific area of law

Different areas of law reward different starting points. A few examples of how the same method adapts:

• Constitutional and criminal questions often turn on Supreme Court and appellate decisions, so start high and work down. A plain-English question like "when is a warrantless search allowed" quickly surfaces the leading precedents to read.
• Contract and commercial disputes tend to be state-specific, so pin down the state first, then search that state's decisions on the exact clause or doctrine.
• Employment questions can involve both federal statutes and state case law, so you may need to search in more than one place and reconcile them.
• Landlord-tenant and premises liability are usually governed by state law and local decisions, so a state-limited search is essential.

In every area, the sequence is the same: find candidate cases, read the holding, expand to related authority, filter for binding decisions in the controlling jurisdiction, and verify good law. Only the starting court and the vocabulary change. The first step of that sequence is what our find precedent feature is built for.

Free versus paid: which should you use?

A practical way to decide: use free tools when your need is to find and read opinions and you are willing to do a careful manual good-law check, and consider paid tools when you need deep historical coverage, editorial headnotes, and a full commercial citator, and can justify the cost. Many solos and students land in the middle, wanting more than a bare search box but not an enterprise contract. That middle is where transparent, self-serve plain-English tools fit, offering summaries and checkable citations at a published price rather than a sales quote. Whatever you choose, the verification discipline below applies to all of them.

Verify what you find

Whatever tool you use, the last mile is verification. Confirm the case exists in an authoritative source, read the holding in the court's own words rather than trusting a summary alone, and check that it has not been overruled. A tool that links every result to the real source makes this trivial, which is the design philosophy behind checkable citations in Cases.

What to do when you cannot find a case

Sometimes a search comes up empty, and how you respond matters. First, broaden your terms or rephrase the question, since the right case may use different vocabulary than you do; plain-English search helps here because it is less sensitive to exact wording. Second, check whether you have the jurisdiction too narrow, because the leading authority might come from a higher court than you were searching. Third, consider that the point may be governed by statute rather than case law, in which case you should look at the code and then the cases interpreting it. Finally, if you are chasing a specific citation that will not resolve anywhere, treat that as a warning sign rather than a search failure. A citation that does not exist in any authoritative source may be mistyped or, in the AI era, fabricated, which is why every real workflow ends in verification.

The honest boundary

Finding a case is not the same as knowing the case decides your question. AI-assisted and plain-English tools, including Cases, are for informational research only, not legal advice. Always read the opinion and verify the citation at its source. The goal is to find the right cases faster, then apply the same careful reading you always would.

Key takeaways

• Search by citation when you have one; search by topic or plain-English question when you do not.
• Google Scholar and CourtListener are strong free options for finding and reading opinions.
• Paid platforms add depth, editorial headnotes, and full citators, at a higher and often quote-only price.
• Prefer binding authority from your jurisdiction, and always verify a case is still good law.
• A tool that links each result to the source makes verification fast and honest.

Want to try asking a question in plain English? See how Cases finds on-point precedents, or view transparent pricing.