How to Write a Legal Memo: Structure, Standards, and a Modern Workflow

A legal memo does one job: it answers a specific legal question honestly, in writing, with the analysis showing. Six sections accomplish that — and everything else is house style:

Here's how to write each one well, and how the workflow actually runs in 2026.

The six sections, and what each is for

Heading block. To, from, date, re, and the matter number. The "re" line should name the actual question, not the case — "Enforceability of the non-compete under the 2024 amendments," not "Smith matter."

Question presented. One sentence per issue, framed as a yes/no question that embeds the decisive facts: "Under Utah's public-accommodation statute, does a private club that rents its hall to the public for weddings become a place of public accommodation?" A good question presented does half the memo's work — it forces you to identify the legal standard and the facts that matter before you write anything else.

Brief answer. The answer — "Probably yes," "No, unless" — followed by two or three sentences of reasoning. Write it so a partner reading only this section could advise the client without embarrassment. If you can't write the brief answer yet, you haven't finished researching; go back before drafting forward.

Statement of facts. Only the facts the analysis uses, told neutrally, with the bad facts included. Every fact that appears in your application section must appear here first, and no fact should appear here that the discussion never touches.

Discussion. The engine. Organize by issue, and within each issue use the structure your reader expects — IRAC or, increasingly the firm default, CREAC: Conclusion, Rule, Explanation, Application, Conclusion. The two habits that separate strong discussions from case-summary parades:

• Synthesize the rule. Three cases don't mean three paragraphs of summaries. They mean one stated rule that the cases collectively support, with each case appearing only for the proposition it adds. If your rule paragraph cites cases you found but didn't read to the holding, stop and read them — finding the authority is step one; knowing what controls is the job.
• Apply, don't re-summarize. The application section compares your facts to the decided cases' facts. "Like the club in Doe, which advertised to the public…" is analysis. "In Doe, the court held…" repeated in the application section is filler.

Address adverse authority in the open. The memo's reader will face those cases eventually; better they arrive with your analysis attached.

Conclusion. One paragraph. The answer restated, the biggest uncertainty named, and the practical next step if one exists.

Objective means objective

An internal memo predicts; it doesn't persuade. The discipline is the same one a court demands of candor: state the law as it is, weight the authorities as a judge would, and give the client's position exactly the probability it deserves. Memos that shade toward the client fail twice — once when strategy gets built on optimism, and again when opposing counsel cites the case you soft-pedaled.

The modern workflow, start to finish

1. Frame the question first. Draft the question presented before researching — it defines the search. Expect to revise it once the research teaches you the real standard.
2. Research to saturation, not exhaustion. You're done when new searches return authorities you've already read. The method — jurisdiction first, binding before persuasive, forward-tracing everything you'll rely on — is our case-law research workflow.
3. Write the brief answer as a hypothesis, then draft the discussion to test it. If the discussion won't support the brief answer, the answer changes — never the analysis.
4. Draft with whatever accelerates you — verify like it's your signature. AI tools can synthesize research and produce a competent first-draft discussion in minutes; retrieval-grounded ones (CaseRead among them) cite real, linked authority as they go, and matter-aware tools draft from your actual case files rather than a summary you retype. None of that moves the responsibility — nor does it settle how you bill for the hours AI saves, a fee-ethics question of its own. Before any memo circulates, every citation gets the existence-support-treatment pass — the 10-minute verification workflow — and anything AI-drafted goes through the Hallucination Shield first, free.
5. Cut, then send. Delete every sentence the answer doesn't need. The memo that gets read is the one that respects the reader's hour.

Frequently asked questions

What are the sections of a legal memo? The classic internal memorandum has six: a heading block (to, from, date, re, matter number), the question presented, a brief answer, a statement of facts, the discussion, and a conclusion. The discussion carries the analysis and is organized issue by issue, typically in IRAC or CREAC form. Firms vary the labels, but a memo that answers a specific question early and shows its reasoning underneath will satisfy any format.

What is the difference between IRAC and CREAC? IRAC orders each issue as Issue, Rule, Application, Conclusion; CREAC leads with the Conclusion, then Rule, Explanation of the rule through the cases, Application to your facts, and Conclusion again. The practical difference is where the answer sits: CREAC tells the reader your conclusion before the analysis, which is why many firms prefer it — supervising attorneys read memos to get answers, not suspense. Use whichever your reader expects; the discipline is identical.

How long should a legal memo be? As short as honesty allows. A single-issue memo often lands at two to five pages; multi-issue memos grow by issue, not by padding. The brief answer should resolve the question in under half a page. If a memo runs long, the usual cause is unsynthesized research — case summaries in sequence instead of a rule the cases add up to. Synthesize first; length follows.

Should a legal memo argue for the client's position? No — an internal memo is objective by definition. Its job is to predict what a court would actually do, including the outcomes the client won't like, so the attorney can advise and strategize from reality. Address the strongest adverse authority directly; a memo that hides the bad cases fails at the moment it matters, when opposing counsel doesn't hide them. Advocacy belongs in the brief, which is a different document with a different duty.

Can I use AI to write a legal memo? AI can accelerate the research synthesis and produce a first draft of the discussion, and retrieval-grounded tools can do it with citations that link to real authority. What AI cannot take over is the memo's core function: your judgment about how a court would rule, and your verification of every cited case. Treat AI output like a junior associate's draft — useful, fast, and unreviewable only at your peril. Verify existence, support, and treatment for every citation before the memo circulates.